Add release v2.4.0

Merge pull request #3319 from weaveworks/weave-reset-err
Make error "Weave is not running" less confusing when running on Kubernetes
2018-07-25 10:32:04 +02:00 · 2018-07-24 10:18:24 +01:00 · 2018-07-24 10:17:45 +01:00 · 2018-07-24 10:06:55 +02:00 · 2018-07-24 10:06:55 +02:00 · 2018-07-24 10:06:55 +02:00
2985 changed files with 947378 additions and 1161 deletions
@@ -46,8 +46,8 @@ prog/weavewait/weavewait_noop
 prog/weavewait/weavewait_nomcast
 prog/weaveutil/weaveutil
 prog/*/Dockerfile.weaveworks
-prog/kube-peers/kube-peers
-prog/weave-kube/kube-peers
+prog/kube-utils/kube-utils
+prog/weave-kube/kube-utils
 prog/weave-npc/weave-npc
 prog/plugin/plugin
 testing/cover/cover
@@ -68,6 +68,7 @@ test/tls/tls
 test/tls/*.pem
 test/coverage
 test/coverage.*
+test/images/network-tester/webserver
 *qemu-*-static
 terraform.tfstate
 terraform.tfstate.backup
@@ -1,180 +1,3 @@
 [submodule "tools"]
 	path = tools
 	url = https://github.com/weaveworks/build-tools
-[submodule "vendor/github.com/vishvananda/netlink"]
-	path = vendor/github.com/vishvananda/netlink
-	url = https://github.com/vishvananda/netlink.git
-[submodule "vendor/github.com/gorilla/mux"]
-	path = vendor/github.com/gorilla/mux
-	url = https://github.com/gorilla/mux.git
-[submodule "vendor/github.com/gorilla/context"]
-	path = vendor/github.com/gorilla/context
-	url = https://github.com/gorilla/context.git
-[submodule "vendor/github.com/google/gopacket"]
-	path = vendor/github.com/google/gopacket
-	url = https://github.com/google/gopacket.git
-[submodule "vendor/github.com/weaveworks/go-odp"]
-	path = vendor/github.com/weaveworks/go-odp
-	url = https://github.com/weaveworks/go-odp.git
-[submodule "vendor/github.com/opencontainers/runc"]
-	path = vendor/github.com/opencontainers/runc
-	url = https://github.com/opencontainers/runc.git
-[submodule "vendor/github.com/fsouza/go-dockerclient"]
-	path = vendor/github.com/fsouza/go-dockerclient
-	url = https://github.com/fsouza/go-dockerclient.git
-[submodule "vendor/github.com/docker/libnetwork"]
-	path = vendor/github.com/docker/libnetwork
-	url = https://github.com/docker/libnetwork.git
-[submodule "vendor/github.com/docker/docker"]
-	path = vendor/github.com/docker/docker
-	url = https://github.com/docker/docker.git
-[submodule "vendor/github.com/Sirupsen/logrus"]
-	path = vendor/github.com/Sirupsen/logrus
-	url = https://github.com/Sirupsen/logrus.git
-[submodule "vendor/github.com/andybalholm/go-bit"]
-	path = vendor/github.com/andybalholm/go-bit
-	url = https://github.com/andybalholm/go-bit.git
-[submodule "vendor/github.com/miekg/dns"]
-	path = vendor/github.com/miekg/dns
-	url = https://github.com/miekg/dns.git
-[submodule "vendor/github.com/stretchr/testify"]
-	path = vendor/github.com/stretchr/testify
-	url = https://github.com/stretchr/testify.git
-[submodule "vendor/golang.org/x/crypto"]
-	path = vendor/golang.org/x/crypto
-	url = https://github.com/golang/crypto.git
-[submodule "vendor/github.com/docker/machine"]
-	path = vendor/github.com/docker/machine
-	url = https://github.com/docker/machine.git
-[submodule "vendor/github.com/weaveworks/mesh"]
-	path = vendor/github.com/weaveworks/mesh
-	url = https://github.com/weaveworks/mesh
-[submodule "vendor/github.com/vishvananda/netns"]
-	path = vendor/github.com/vishvananda/netns
-	url = https://github.com/vishvananda/netns.git
-[submodule "vendor/github.com/boltdb/bolt"]
-	path = vendor/github.com/boltdb/bolt
-	url = https://github.com/boltdb/bolt
-[submodule "vendor/github.com/weaveworks/go-checkpoint"]
-	path = vendor/github.com/weaveworks/go-checkpoint
-	url = https://github.com/weaveworks/go-checkpoint
-[submodule "vendor/github.com/hashicorp/go-cleanhttp"]
-	path = vendor/github.com/hashicorp/go-cleanhttp
-	url = http://github.com/hashicorp/go-cleanhttp
-[submodule "vendor/github.com/coreos/go-iptables"]
-	path = vendor/github.com/coreos/go-iptables
-	url = https://github.com/coreos/go-iptables
-[submodule "vendor/github.com/pkg/profile"]
-	path = vendor/github.com/pkg/profile
-	url = https://github.com/pkg/profile
-[submodule "vendor/github.com/j-keck/arping"]
-	path = vendor/github.com/j-keck/arping
-	url = https://github.com/j-keck/arping
-[submodule "vendor/github.com/aws/aws-sdk-go"]
-	path = vendor/github.com/aws/aws-sdk-go
-	url = https://github.com/aws/aws-sdk-go
-[submodule "vendor/golang.org/x/sys"]
-	path = vendor/golang.org/x/sys
-	url = https://go.googlesource.com/sys
-[submodule "vendor/github.com/beorn7/perks"]
-	path = vendor/github.com/beorn7/perks
-	url = https://github.com/beorn7/perks
-[submodule "vendor/github.com/prometheus/procfs"]
-	path = vendor/github.com/prometheus/procfs
-	url = https://github.com/prometheus/procfs
-[submodule "vendor/github.com/prometheus/client_golang"]
-	path = vendor/github.com/prometheus/client_golang
-	url = https://github.com/prometheus/client_golang
-[submodule "vendor/github.com/prometheus/client_model"]
-	path = vendor/github.com/prometheus/client_model
-	url = https://github.com/prometheus/client_model
-[submodule "vendor/github.com/prometheus/common"]
-	path = vendor/github.com/prometheus/common
-	url = https://github.com/prometheus/common
-[submodule "vendor/github.com/golang/protobuf"]
-	path = vendor/github.com/golang/protobuf
-	url = https://github.com/golang/protobuf
-[submodule "vendor/github.com/matttproud/golang_protobuf_extensions"]
-	path = vendor/github.com/matttproud/golang_protobuf_extensions
-	url = https://github.com/matttproud/golang_protobuf_extensions
-[submodule "vendor/k8s.io/client-go"]
-	path = vendor/k8s.io/client-go
-	url = https://github.com/kubernetes/client-go
-[submodule "vendor/github.com/pkg/errors"]
-	path = vendor/github.com/pkg/errors
-	url = https://github.com/pkg/errors
-[submodule "vendor/github.com/spf13/cobra"]
-	path = vendor/github.com/spf13/cobra
-	url = https://github.com/spf13/cobra
-[submodule "vendor/github.com/spf13/plag"]
-	path = vendor/github.com/spf13/plag
-	url = https://github.com/spf13/pflag
-[submodule "vendor/github.com/spf13/pflag"]
-	path = vendor/github.com/spf13/pflag
-	url = https://github.com/spf13/pflag
-[submodule "vendor/github.com/mgutz/ansi"]
-	path = vendor/github.com/mgutz/ansi
-	url = https://github.com/mgutz/ansi
-[submodule "vendor/github.com/estesp/manifest-tool"]
-	path = vendor/github.com/estesp/manifest-tool
-	url = https://github.com/estesp/manifest-tool
-[submodule "vendor/github.com/weaveworks/common"]
-	path = vendor/github.com/weaveworks/common
-	url = https://github.com/weaveworks/common
-[submodule "vendor/github.com/containernetworking/cni"]
-	path = vendor/github.com/containernetworking/cni
-	url = https://github.com/containernetworking/cni
-[submodule "vendor/google.golang.org/grpc"]
-	path = vendor/google.golang.org/grpc
-	url = https://github.com/grpc/grpc-go
-[submodule "vendor/github.com/docker/go-units"]
-	path = vendor/github.com/docker/go-units
-	url = https://github.com/docker/go-units
-[submodule "vendor/golang.org/x/net"]
-	path = vendor/golang.org/x/net
-	url = https://github.com/golang/net
-[submodule "vendor/k8s.io/api"]
-	path = vendor/k8s.io/api
-	url = https://github.com/kubernetes/api
-[submodule "vendor/k8s.io/apimachinery"]
-	path = vendor/k8s.io/apimachinery
-	url = https://github.com/kubernetes/apimachinery
-[submodule "vendor/github.com/PuerkitoBio/purell"]
-	path = vendor/github.com/PuerkitoBio/purell
-	url = https://github.com/PuerkitoBio/purell
-[submodule "vendor/github.com/PuerkitoBio/urlesc"]
-	path = vendor/github.com/PuerkitoBio/urlesc
-	url = https://github.com/PuerkitoBio/urlesc
-[submodule "vendor/github.com/emicklei/go-restful"]
-	path = vendor/github.com/emicklei/go-restful
-	url = https://github.com/emicklei/go-restful
-[submodule "vendor/github.com/go-openapi/jsonpointer"]
-	path = vendor/github.com/go-openapi/jsonpointer
-	url = https://github.com/go-openapi/jsonpointer
-[submodule "vendor/github.com/go-openapi/jsonreference"]
-	path = vendor/github.com/go-openapi/jsonreference
-	url = https://github.com/go-openapi/jsonreference
-[submodule "vendor/github.com/go-openapi/spec"]
-	path = vendor/github.com/go-openapi/spec
-	url = https://github.com/go-openapi/spec
-[submodule "vendor/github.com/go-openapi/swag"]
-	path = vendor/github.com/go-openapi/swag
-	url = https://github.com/go-openapi/swag
-[submodule "vendor/github.com/golang/glog"]
-	path = vendor/github.com/golang/glog
-	url = https://github.com/golang/glog
-[submodule "vendor/github.com/google/gofuzz"]
-	path = vendor/github.com/google/gofuzz
-	url = https://github.com/google/gofuzz
-[submodule "vendor/github.com/mailru/easyjson"]
-	path = vendor/github.com/mailru/easyjson
-	url = https://github.com/mailru/easyjson
-[submodule "vendor/k8s.io/kube-openapi"]
-	path = vendor/k8s.io/kube-openapi
-	url = https://github.com/kubernetes/kube-openapi
-[submodule "vendor/golang.org/x/text"]
-	path = vendor/golang.org/x/text
-	url = https://go.googlesource.com/text
-[submodule "vendor/gopkg.in/yaml.v2"]
-	path = vendor/gopkg.in/yaml.v2
-	url = https://gopkg.in/yaml.v2
@@ -1,3 +1,48 @@
+## Release 2.4.0
+
+This release introduces a support for Kubernetes Egress Network Policy (#2624, #3313)
+and adds a mechanism for preserving the client source IP address to enable
+`externalTrafficPolicy: Local` on Kubernetes (#2924, #3298).
+
+### Bug fixes
+
+* Increase the ipset list size which prevents weave-npc from crashing on older
+  kernels when more than eight Kubernetes Namespaces are used (#3289, #3305).
+* Avoid a possible livelock when reclaiming IP address space in weave-kube (#3317).
+* Ensure `xtables.lock` is mounted as a file so that kube-proxy can take the lock
+  if it has started after Weave Net (#3351, #3353).
+* Upgrade the CNI plugin symlinks only if the plugin has changed (#3337, #3345).
+
+### Other improvements
+
+* Manipulate the Kubernetes node status `NetworkUnavailable` so that Pods can be
+  scheduled on nodes when the GCE cloud provider is in use (#3249, #3307, #3332, #3334).
+* Refrain from creating a subprocess for configuring a network interface in
+  a container network namespace (#3291).
+* Protect against handling the CNI plugin request with the host namespace which
+  prevents Weave Net from misconfiguring the host network (#3206, #3346).
+* Weave Net can be run on minikube VM (#3124).
+* Add `org.opencontainers.image.*` labels to Dockerfiles to improve association
+  of the container images with git revisions (#3299).
+* Improve the error message when running `weave reset` on Kubernetes (#3319).
+
+### Build and Testing
+
+* Use `dep` instead of `git submodules` for managing external packages (#3268).
+* Fix usage of `manifest-tool` in Makefile (#3320).
+* Update Kubernetes to 1.11 for the integration tests (#3340).
+
+### External Contributors
+
+Thanks to the following contributors:
+
+* @kitt1987
+* @louismunro
+* @Nodraak
+* @stevenjohnstone
+
+[Full list of changes](https://github.com/weaveworks/weave/milestone/73?closed=1)
+
 ## Release 2.3.0

 ### Security fixes
@@ -24,6 +24,25 @@ taking the time to read this guide.
 * Keep pull requests small so core developers can review them quickly.
 * Keep each pull request focused on a specific topic.  If you have two things to change, create two pull requests. This helps reviewers to understand the meat of your contribution.

+## Managing Vendored Dependencies
+
+We copy all Go dependencies into the `vendor` subdirectory and use
+[`dep`](https://github.com/golang/dep) to manage them.
+
+If you add a dependency in the code, run `dep ensure` to include it in
+the config and vendor dir. Same if you remove a dependency from the code.
+
+To update a single dependency run `dep ensure -update github.com/foo/bar`
+
+To override `dep`'s choice of library version, you can add
+[rules](https://golang.github.io/dep/docs/daily-dep.html#rule-changes-in-gopkgtoml).
+Please add a comment saying why the override is necessary and when it can be
+removed.
+
+These operations result in staged but uncommitted changes to your
+branch; you will need to commit them as normal. Execute them in the
+root of your checkout.
+
 ## Workflow
 See [WorkingOnWeave](https://github.com/weaveworks/weave/wiki/WorkingOnWeave)

@@ -1,3 +1,3 @@
 DOCKER_VERSION=17.06
-KUBERNETES_VERSION=1.10.0
+KUBERNETES_VERSION=1.11.0
 KUBERNETES_CNI_VERSION=0.6.0
@@ -0,0 +1,782 @@
+# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
+
+
+[[projects]]
+  branch = "master"
+  name = "github.com/Azure/go-ansiterm"
+  packages = [
+    ".",
+    "winterm"
+  ]
+  revision = "d6e3b3328b783f23731bc4d058875b0371ff8109"
+
+[[projects]]
+  name = "github.com/Microsoft/go-winio"
+  packages = ["."]
+  revision = "7da180ee92d8bd8bb8c37fc560e673e6557c392f"
+  version = "v0.4.7"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/Nvveen/Gotty"
+  packages = ["."]
+  revision = "cd527374f1e5bff4938207604a14f2e38a9cf512"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/andybalholm/go-bit"
+  packages = ["."]
+  revision = "34813fe0e46a87398d88d0315e0f22615592b242"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/armon/go-socks5"
+  packages = ["."]
+  revision = "e75332964ef517daa070d7c38a9466a0d687e0a5"
+
+[[projects]]
+  name = "github.com/aws/aws-sdk-go"
+  packages = [
+    "aws",
+    "aws/awserr",
+    "aws/awsutil",
+    "aws/client",
+    "aws/client/metadata",
+    "aws/corehandlers",
+    "aws/credentials",
+    "aws/credentials/ec2rolecreds",
+    "aws/credentials/endpointcreds",
+    "aws/credentials/stscreds",
+    "aws/defaults",
+    "aws/ec2metadata",
+    "aws/endpoints",
+    "aws/request",
+    "aws/session",
+    "aws/signer/v4",
+    "internal/sdkio",
+    "internal/sdkrand",
+    "internal/shareddefaults",
+    "private/protocol",
+    "private/protocol/ec2query",
+    "private/protocol/query",
+    "private/protocol/query/queryutil",
+    "private/protocol/rest",
+    "private/protocol/xml/xmlutil",
+    "service/ec2",
+    "service/sts"
+  ]
+  revision = "851c8ce700ee981b0ce28634721c2a925c6f3d0b"
+  version = "v1.13.22"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/beorn7/perks"
+  packages = ["quantile"]
+  revision = "3a771d992973f24aa725d07868b467d1ddfceafb"
+
+[[projects]]
+  name = "github.com/boltdb/bolt"
+  packages = ["."]
+  revision = "2f1ce7a837dcb8da3ec595b1dac9d0632f0f99e8"
+  version = "v1.3.1"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/containerd/continuity"
+  packages = ["pathdriver"]
+  revision = "3e8f2ea4b190484acb976a5b378d373429639a1a"
+
+[[projects]]
+  name = "github.com/containernetworking/cni"
+  packages = [
+    "pkg/invoke",
+    "pkg/ip",
+    "pkg/ipam",
+    "pkg/ns",
+    "pkg/skel",
+    "pkg/types",
+    "pkg/types/020",
+    "pkg/types/current",
+    "pkg/utils/hwaddr",
+    "pkg/version"
+  ]
+  revision = "137b4975ecab6e1f0c24c1e3c228a50a3cfba75e"
+  version = "v0.5.2"
+
+[[projects]]
+  name = "github.com/coreos/go-iptables"
+  packages = ["iptables"]
+  revision = "b5b1876b170881a8259f036445ee89c8669db386"
+  version = "v0.3.0"
+
+[[projects]]
+  name = "github.com/davecgh/go-spew"
+  packages = ["spew"]
+  revision = "346938d642f2ec3594ed81d874461961cd0faa76"
+  version = "v1.1.0"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/docker/distribution"
+  packages = [
+    "digestset",
+    "reference"
+  ]
+  revision = "83389a148052d74ac602f5f1d62f86ff2f3c4aa5"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/docker/docker"
+  packages = [
+    "api",
+    "api/types",
+    "api/types/blkiodev",
+    "api/types/container",
+    "api/types/events",
+    "api/types/filters",
+    "api/types/image",
+    "api/types/mount",
+    "api/types/network",
+    "api/types/registry",
+    "api/types/strslice",
+    "api/types/swarm",
+    "api/types/swarm/runtime",
+    "api/types/time",
+    "api/types/versions",
+    "api/types/volume",
+    "client",
+    "opts",
+    "pkg/archive",
+    "pkg/fileutils",
+    "pkg/homedir",
+    "pkg/idtools",
+    "pkg/ioutils",
+    "pkg/jsonmessage",
+    "pkg/longpath",
+    "pkg/mount",
+    "pkg/plugingetter",
+    "pkg/plugins",
+    "pkg/plugins/transport",
+    "pkg/pools",
+    "pkg/stdcopy",
+    "pkg/system",
+    "pkg/term",
+    "pkg/term/windows"
+  ]
+  revision = "38588656727d19f4a36d14c3620ecaff73160315"
+
+[[projects]]
+  name = "github.com/docker/go-connections"
+  packages = [
+    "nat",
+    "sockets",
+    "tlsconfig"
+  ]
+  revision = "3ede32e2033de7505e6500d6c868c2b9ed9f169d"
+  version = "v0.3.0"
+
+[[projects]]
+  name = "github.com/docker/go-units"
+  packages = ["."]
+  revision = "0dadbb0345b35ec7ef35e228dabb8de89a65bf52"
+  version = "v0.3.2"
+
+[[projects]]
+  name = "github.com/docker/libnetwork"
+  packages = [
+    "discoverapi",
+    "driverapi",
+    "drivers/remote/api",
+    "ipamapi",
+    "ipams/remote/api",
+    "netlabel",
+    "types"
+  ]
+  revision = "119badbd"
+
+[[projects]]
+  name = "github.com/docker/machine"
+  packages = [
+    "libmachine/auth",
+    "libmachine/cert",
+    "libmachine/log",
+    "libmachine/mcnutils",
+    "version"
+  ]
+  revision = "89b833253d9412716a0291cbdccc94454c33d1b5"
+  version = "v0.14.0"
+
+[[projects]]
+  name = "github.com/fsouza/go-dockerclient"
+  packages = ["."]
+  revision = "ca33ff277b527ce11b793e62f9ba244129b01caf"
+  version = "v1.2.0"
+
+[[projects]]
+  name = "github.com/ghodss/yaml"
+  packages = ["."]
+  revision = "0ca9ea5df5451ffdf184b4428c902747c2c11cd7"
+  version = "v1.0.0"
+
+[[projects]]
+  name = "github.com/go-ini/ini"
+  packages = ["."]
+  revision = "6333e38ac20b8949a8dd68baa3650f4dee8f39f0"
+  version = "v1.33.0"
+
+[[projects]]
+  name = "github.com/gogo/protobuf"
+  packages = [
+    "proto",
+    "sortkeys"
+  ]
+  revision = "1adfc126b41513cc696b209667c8656ea7aac67c"
+  version = "v1.0.0"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/golang/glog"
+  packages = ["."]
+  revision = "23def4e6c14b4da8ac2ed8007337bc5eb5007998"
+
+[[projects]]
+  name = "github.com/golang/protobuf"
+  packages = [
+    "proto",
+    "ptypes",
+    "ptypes/any",
+    "ptypes/duration",
+    "ptypes/timestamp"
+  ]
+  revision = "925541529c1fa6821df4e44ce2723319eb2be768"
+  version = "v1.0.0"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/google/btree"
+  packages = ["."]
+  revision = "e89373fe6b4a7413d7acd6da1725b83ef713e6e4"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/google/gofuzz"
+  packages = ["."]
+  revision = "24818f796faf91cd76ec7bddd72458fbced7a6c1"
+
+[[projects]]
+  name = "github.com/google/gopacket"
+  packages = [
+    ".",
+    "layers",
+    "pcap",
+    "pcapgo"
+  ]
+  revision = "11c65f1ca9081dfea43b4f9643f5c155583b73ba"
+  version = "v1.1.14"
+
+[[projects]]
+  name = "github.com/googleapis/gnostic"
+  packages = [
+    "OpenAPIv2",
+    "compiler",
+    "extensions"
+  ]
+  revision = "ee43cbb60db7bd22502942cccbc39059117352ab"
+  version = "v0.1.0"
+
+[[projects]]
+  name = "github.com/gorilla/context"
+  packages = ["."]
+  revision = "1ea25387ff6f684839d82767c1733ff4d4d15d0a"
+  version = "v1.1"
+
+[[projects]]
+  name = "github.com/gorilla/mux"
+  packages = ["."]
+  revision = "53c1911da2b537f792e7cafcb446b05ffe33b996"
+  version = "v1.6.1"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/gregjones/httpcache"
+  packages = [
+    ".",
+    "diskcache"
+  ]
+  revision = "9cad4c3443a7200dd6400aef47183728de563a38"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/hashicorp/go-cleanhttp"
+  packages = ["."]
+  revision = "d5fe4b57a186c716b0e00b8c301cbd9b4182694d"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/hashicorp/golang-lru"
+  packages = [
+    ".",
+    "simplelru"
+  ]
+  revision = "0fb14efe8c47ae851c0034ed7a448854d3d34cf3"
+
+[[projects]]
+  name = "github.com/inconshreveable/mousetrap"
+  packages = ["."]
+  revision = "76626ae9c91c4f2a10f34cad8ce83ea42c93bb75"
+  version = "v1.0"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/j-keck/arping"
+  packages = ["."]
+  revision = "2cf9dc699c5640a7e2c81403a44127bf28033600"
+
+[[projects]]
+  name = "github.com/jmespath/go-jmespath"
+  packages = ["."]
+  revision = "0b12d6b5"
+
+[[projects]]
+  name = "github.com/json-iterator/go"
+  packages = ["."]
+  revision = "ca39e5af3ece67bbcda3d0f4f56a8e24d9f2dad4"
+  version = "1.1.3"
+
+[[projects]]
+  name = "github.com/juju/ratelimit"
+  packages = ["."]
+  revision = "59fac5042749a5afb9af70e813da1dd5474f0167"
+  version = "1.0.1"
+
+[[projects]]
+  name = "github.com/mattn/go-colorable"
+  packages = ["."]
+  revision = "167de6bfdfba052fa6b2d3664c8f5272e23c9072"
+  version = "v0.0.9"
+
+[[projects]]
+  name = "github.com/mattn/go-isatty"
+  packages = ["."]
+  revision = "0360b2af4f38e8d38c7fce2a9f4e702702d73a39"
+  version = "v0.0.3"
+
+[[projects]]
+  name = "github.com/matttproud/golang_protobuf_extensions"
+  packages = ["pbutil"]
+  revision = "3247c84500bff8d9fb6d579d800f20b3e091582c"
+  version = "v1.0.0"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/mgutz/ansi"
+  packages = ["."]
+  revision = "9520e82c474b0a04dd04f8a40959027271bab992"
+
+[[projects]]
+  name = "github.com/miekg/dns"
+  packages = ["."]
+  revision = "5364553f1ee9cddc7ac8b62dce148309c386695b"
+  version = "v1.0.4"
+
+[[projects]]
+  name = "github.com/modern-go/concurrent"
+  packages = ["."]
+  revision = "bacd9c7ef1dd9b15be4a9909b8ac7a4e313eec94"
+  version = "1.0.3"
+
+[[projects]]
+  name = "github.com/modern-go/reflect2"
+  packages = ["."]
+  revision = "1df9eeb2bb81f327b96228865c5687bc2194af3f"
+  version = "1.0.0"
+
+[[projects]]
+  name = "github.com/opencontainers/go-digest"
+  packages = ["."]
+  revision = "279bed98673dd5bef374d3b6e4b09e2af76183bf"
+  version = "v1.0.0-rc1"
+
+[[projects]]
+  name = "github.com/opencontainers/image-spec"
+  packages = [
+    "specs-go",
+    "specs-go/v1"
+  ]
+  revision = "d60099175f88c47cd379c4738d158884749ed235"
+  version = "v1.0.1"
+
+[[projects]]
+  name = "github.com/opencontainers/runc"
+  packages = [
+    "libcontainer/system",
+    "libcontainer/user"
+  ]
+  revision = "baf6536d6259209c3edfa2b22237af82942d3dfa"
+  version = "v0.1.1"
+
+[[projects]]
+  name = "github.com/pborman/uuid"
+  packages = ["."]
+  revision = "e790cca94e6cc75c7064b1332e63811d4aae1a53"
+  version = "v1.1"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/petar/GoLLRB"
+  packages = ["llrb"]
+  revision = "53be0d36a84c2a886ca057d34b6aa4468df9ccb4"
+
+[[projects]]
+  name = "github.com/peterbourgon/diskv"
+  packages = ["."]
+  revision = "5f041e8faa004a95c88a202771f4cc3e991971e6"
+  version = "v2.0.1"
+
+[[projects]]
+  name = "github.com/pkg/errors"
+  packages = ["."]
+  revision = "645ef00459ed84a119197bfb8d8205042c6df63d"
+  version = "v0.8.0"
+
+[[projects]]
+  name = "github.com/pkg/profile"
+  packages = ["."]
+  revision = "5b67d428864e92711fcbd2f8629456121a56d91f"
+  version = "v1.2.1"
+
+[[projects]]
+  name = "github.com/pmezard/go-difflib"
+  packages = ["difflib"]
+  revision = "792786c7400a136282c1664665ae0a8db921c6c2"
+  version = "v1.0.0"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/prometheus/client_golang"
+  packages = [
+    "prometheus",
+    "prometheus/promhttp"
+  ]
+  revision = "f504d69affe11ec1ccb2e5948127f86878c9fd57"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/prometheus/client_model"
+  packages = ["go"]
+  revision = "99fa1f4be8e564e8a6b613da7fa6f46c9edafc6c"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/prometheus/common"
+  packages = [
+    "expfmt",
+    "internal/bitbucket.org/ww/goautoneg",
+    "model"
+  ]
+  revision = "38c53a9f4bfcd932d1b00bfc65e256a7fba6b37a"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/prometheus/procfs"
+  packages = [
+    ".",
+    "internal/util",
+    "nfs",
+    "xfs"
+  ]
+  revision = "780932d4fbbe0e69b84c34c20f5c8d0981e109ea"
+
+[[projects]]
+  name = "github.com/sirupsen/logrus"
+  packages = ["."]
+  revision = "d682213848ed68c0a260ca37d6dd5ace8423f5ba"
+  version = "v1.0.4"
+
+[[projects]]
+  name = "github.com/spf13/cobra"
+  packages = ["."]
+  revision = "7b2c5ac9fc04fc5efafb60700713d4fa609b777b"
+  version = "v0.0.1"
+
+[[projects]]
+  name = "github.com/spf13/pflag"
+  packages = ["."]
+  revision = "e57e3eeb33f795204c1ca35f56c44f83227c6e66"
+  version = "v1.0.0"
+
+[[projects]]
+  name = "github.com/stretchr/testify"
+  packages = [
+    "assert",
+    "require"
+  ]
+  revision = "12b6f73e6084dad08a7c6e575284b177ecafbc71"
+  version = "v1.2.1"
+
+[[projects]]
+  name = "github.com/vishvananda/netlink"
+  packages = [
+    ".",
+    "nl"
+  ]
+  revision = "a2ad57a690f3caf3015351d2d6e1c0b95c349752"
+  version = "v1.0.0"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/vishvananda/netns"
+  packages = ["."]
+  revision = "be1fbeda19366dea804f00efff2dd73a1642fdcc"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/weaveworks/common"
+  packages = [
+    "mflag",
+    "mflagext",
+    "signals"
+  ]
+  revision = "ebab3a78900a09cebce8d0b37f2a69d474796bf4"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/weaveworks/go-checkpoint"
+  packages = ["."]
+  revision = "ebbb8b0518ab326368631225cabc9435fe580dcc"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/weaveworks/go-odp"
+  packages = ["odp"]
+  revision = "eec09c2fbfb96be47bfe11165ce300ad9a60bef5"
+
+[[projects]]
+  name = "github.com/weaveworks/mesh"
+  packages = ["."]
+  revision = "38e8100dfbc7b28ae8ffde5a2bbeceec57ffa52a"
+  version = "v0.1"
+
+[[projects]]
+  branch = "master"
+  name = "golang.org/x/crypto"
+  packages = [
+    "curve25519",
+    "ed25519",
+    "ed25519/internal/edwards25519",
+    "hkdf",
+    "nacl/box",
+    "nacl/secretbox",
+    "pbkdf2",
+    "poly1305",
+    "salsa20/salsa",
+    "scrypt",
+    "ssh/terminal"
+  ]
+  revision = "88942b9c40a4c9d203b82b3731787b672d6e809b"
+
+[[projects]]
+  branch = "master"
+  name = "golang.org/x/net"
+  packages = [
+    "bpf",
+    "context",
+    "context/ctxhttp",
+    "http2",
+    "http2/hpack",
+    "idna",
+    "internal/iana",
+    "internal/socket",
+    "ipv4",
+    "ipv6",
+    "lex/httplex",
+    "proxy"
+  ]
+  revision = "6078986fec03a1dcc236c34816c71b0e05018fda"
+
+[[projects]]
+  branch = "master"
+  name = "golang.org/x/sys"
+  packages = [
+    "unix",
+    "windows"
+  ]
+  revision = "13d03a9a82fba647c21a0ef8fba44a795d0f0835"
+
+[[projects]]
+  name = "golang.org/x/text"
+  packages = [
+    "collate",
+    "collate/build",
+    "internal/colltab",
+    "internal/gen",
+    "internal/tag",
+    "internal/triegen",
+    "internal/ucd",
+    "language",
+    "secure/bidirule",
+    "transform",
+    "unicode/bidi",
+    "unicode/cldr",
+    "unicode/norm",
+    "unicode/rangetable"
+  ]
+  revision = "f21a4dfb5e38f5895301dc265a8def02365cc3d0"
+  version = "v0.3.0"
+
+[[projects]]
+  branch = "master"
+  name = "golang.org/x/tools"
+  packages = ["cover"]
+  revision = "77106db15f689a60e7d4e085d967ac557b918fb2"
+
+[[projects]]
+  name = "gopkg.in/inf.v0"
+  packages = ["."]
+  revision = "d2d2541c53f18d2a059457998ce2876cc8e67cbf"
+  version = "v0.9.1"
+
+[[projects]]
+  name = "gopkg.in/yaml.v2"
+  packages = ["."]
+  revision = "86f5ed62f8a0ee96bd888d2efdfd6d4fb100a4eb"
+  version = "v2.2.0"
+
+[[projects]]
+  branch = "master"
+  name = "k8s.io/api"
+  packages = [
+    "admissionregistration/v1alpha1",
+    "admissionregistration/v1beta1",
+    "apps/v1",
+    "apps/v1beta1",
+    "apps/v1beta2",
+    "authentication/v1",
+    "authentication/v1beta1",
+    "authorization/v1",
+    "authorization/v1beta1",
+    "autoscaling/v1",
+    "autoscaling/v2beta1",
+    "batch/v1",
+    "batch/v1beta1",
+    "batch/v2alpha1",
+    "certificates/v1beta1",
+    "core/v1",
+    "events/v1beta1",
+    "extensions/v1beta1",
+    "networking/v1",
+    "policy/v1beta1",
+    "rbac/v1",
+    "rbac/v1alpha1",
+    "rbac/v1beta1",
+    "scheduling/v1alpha1",
+    "settings/v1alpha1",
+    "storage/v1",
+    "storage/v1alpha1",
+    "storage/v1beta1"
+  ]
+  revision = "055879e38033d1526b0fe169089a055c33fa3990"
+
+[[projects]]
+  branch = "master"
+  name = "k8s.io/apimachinery"
+  packages = [
+    "pkg/api/errors",
+    "pkg/api/meta",
+    "pkg/api/resource",
+    "pkg/apis/meta/internalversion",
+    "pkg/apis/meta/v1",
+    "pkg/apis/meta/v1/unstructured",
+    "pkg/apis/meta/v1beta1",
+    "pkg/conversion",
+    "pkg/conversion/queryparams",
+    "pkg/fields",
+    "pkg/labels",
+    "pkg/runtime",
+    "pkg/runtime/schema",
+    "pkg/runtime/serializer",
+    "pkg/runtime/serializer/json",
+    "pkg/runtime/serializer/protobuf",
+    "pkg/runtime/serializer/recognizer",
+    "pkg/runtime/serializer/streaming",
+    "pkg/runtime/serializer/versioning",
+    "pkg/selection",
+    "pkg/types",
+    "pkg/util/cache",
+    "pkg/util/clock",
+    "pkg/util/diff",
+    "pkg/util/errors",
+    "pkg/util/framer",
+    "pkg/util/intstr",
+    "pkg/util/json",
+    "pkg/util/net",
+    "pkg/util/runtime",
+    "pkg/util/sets",
+    "pkg/util/uuid",
+    "pkg/util/validation",
+    "pkg/util/validation/field",
+    "pkg/util/wait",
+    "pkg/util/yaml",
+    "pkg/version",
+    "pkg/watch",
+    "third_party/forked/golang/reflect"
+  ]
+  revision = "210bcde8e5a7715fe776460ca1df1a3f2738725e"
+
+[[projects]]
+  name = "k8s.io/client-go"
+  packages = [
+    "discovery",
+    "kubernetes",
+    "kubernetes/scheme",
+    "kubernetes/typed/admissionregistration/v1alpha1",
+    "kubernetes/typed/admissionregistration/v1beta1",
+    "kubernetes/typed/apps/v1",
+    "kubernetes/typed/apps/v1beta1",
+    "kubernetes/typed/apps/v1beta2",
+    "kubernetes/typed/authentication/v1",
+    "kubernetes/typed/authentication/v1beta1",
+    "kubernetes/typed/authorization/v1",
+    "kubernetes/typed/authorization/v1beta1",
+    "kubernetes/typed/autoscaling/v1",
+    "kubernetes/typed/autoscaling/v2beta1",
+    "kubernetes/typed/batch/v1",
+    "kubernetes/typed/batch/v1beta1",
+    "kubernetes/typed/batch/v2alpha1",
+    "kubernetes/typed/certificates/v1beta1",
+    "kubernetes/typed/core/v1",
+    "kubernetes/typed/events/v1beta1",
+    "kubernetes/typed/extensions/v1beta1",
+    "kubernetes/typed/networking/v1",
+    "kubernetes/typed/policy/v1beta1",
+    "kubernetes/typed/rbac/v1",
+    "kubernetes/typed/rbac/v1alpha1",
+    "kubernetes/typed/rbac/v1beta1",
+    "kubernetes/typed/scheduling/v1alpha1",
+    "kubernetes/typed/settings/v1alpha1",
+    "kubernetes/typed/storage/v1",
+    "kubernetes/typed/storage/v1alpha1",
+    "kubernetes/typed/storage/v1beta1",
+    "pkg/version",
+    "rest",
+    "rest/watch",
+    "tools/cache",
+    "tools/clientcmd/api",
+    "tools/metrics",
+    "tools/pager",
+    "tools/reference",
+    "transport",
+    "util/buffer",
+    "util/cert",
+    "util/flowcontrol",
+    "util/integer"
+  ]
+  revision = "78700dec6369ba22221b72770783300f143df150"
+  version = "v6.0.0"
+
+[solve-meta]
+  analyzer-name = "dep"
+  analyzer-version = 1
+  inputs-digest = "4797cbcb2a3e44dbdfcb6f7a7aba5a86079a150d9cf4d782eb7f69be973c48db"
+  solver-name = "gps-cdcl"
+  solver-version = 1
@@ -0,0 +1,29 @@
+# Pin to version before sctp was added, because latest libnetwork is
+# incompatible with latest sctp
+[[constraint]]
+  name = "github.com/docker/libnetwork"
+  revision = "119badbd"
+
+# Encourage dep not to use the docker-1.9 version
+[[constraint]]
+  name = "github.com/fsouza/go-dockerclient"
+  version = "1"
+
+# Use recent version: last tagged version is years old
+[[constraint]]
+  branch = "master"
+  name = "github.com/prometheus/client_golang"
+
+# For compatibility with fsouza/go-dockerclient
+[[constraint]]
+  branch = "master"
+  name = "github.com/docker/docker"
+
+# Most recent release tag is incompatible with docker/docker; see https://github.com/docker/distribution/issues/2503
+[[override]]
+  branch = "master"
+  name = "github.com/docker/distribution"
+
+[prune]
+  go-tests = true
+  unused-packages = true
@@ -101,6 +101,7 @@ endif
 # The name of the user that this Makefile should produce image artifacts for. Can/should be overridden
 DOCKERHUB_USER?=weaveworks
 # The default version that's chosen when pushing the images. Can/should be overridden
+GIT_REVISION=$(shell git rev-parse HEAD)
 WEAVE_VERSION?=git-$(shell git rev-parse --short=12 HEAD)
 # Docker Store does not allow the "latest" tag.
 NET_PLUGIN_LATEST=latest_release
@@ -108,20 +109,20 @@ NET_PLUGIN_LATEST=latest_release
 # Paths to all relevant binaries that should be compiled
 WEAVER_EXE=prog/weaver/weaver
 SIGPROXY_EXE=prog/sigproxy/sigproxy
-KUBEPEERS_EXE=prog/kube-peers/kube-peers
+KUBEUTILS_EXE=prog/kube-utils/kube-utils
 WEAVENPC_EXE=prog/weave-npc/weave-npc
 WEAVEWAIT_EXE=prog/weavewait/weavewait
 WEAVEWAIT_NOOP_EXE=prog/weavewait/weavewait_noop
 WEAVEWAIT_NOMCAST_EXE=prog/weavewait/weavewait_nomcast
 WEAVEUTIL_EXE=prog/weaveutil/weaveutil
 RUNNER_EXE=tools/runner/runner
-MANIFEST_TOOL_DIR=vendor/github.com/estesp/manifest-tool
-MANIFEST_TOOL_EXE=$(MANIFEST_TOOL_DIR)/manifest-tool
+# manifest-tool needs registry credentials; we assume here that the active user has logged in
+MANIFEST_TOOL_CMD=docker run --rm -v $(HOME)/.docker:/.docker weshigbee/manifest-tool --docker-cfg=/.docker
 TEST_TLS_EXE=test/tls/tls
 NETWORKTESTER_EXE=test/images/network-tester/webserver

 # All binaries together in a list
-EXES=$(WEAVER_EXE) $(SIGPROXY_EXE) $(KUBEPEERS_EXE) $(WEAVENPC_EXE) $(WEAVEWAIT_EXE) $(WEAVEWAIT_NOOP_EXE) $(WEAVEWAIT_NOMCAST_EXE) $(WEAVEUTIL_EXE) $(RUNNER_EXE) $(TEST_TLS_EXE) $(MANIFEST_TOOL_EXE) $(NETWORKTESTER_EXE)
+EXES=$(WEAVER_EXE) $(SIGPROXY_EXE) $(KUBEUTILS_EXE) $(WEAVENPC_EXE) $(WEAVEWAIT_EXE) $(WEAVEWAIT_NOOP_EXE) $(WEAVEWAIT_NOMCAST_EXE) $(WEAVEUTIL_EXE) $(RUNNER_EXE) $(TEST_TLS_EXE) $(NETWORKTESTER_EXE)

 # These stamp files are used to mark the current state of the build; whether an image has been built or not
 BUILD_UPTODATE=.build.uptodate
@@ -179,11 +180,10 @@ $(WEAVER_EXE): api/*.go plugin/*.go plugin/*/*
 $(WEAVER_EXE):  proxy/*.go
 $(WEAVEUTIL_EXE): prog/weaveutil/*.go net/*.go plugin/net/*.go plugin/ipam/*.go db/*.go
 $(SIGPROXY_EXE): prog/sigproxy/*.go
-$(KUBEPEERS_EXE): prog/kube-peers/*.go
+$(KUBEUTILS_EXE): prog/kube-utils/*.go
 $(WEAVENPC_EXE): prog/weave-npc/*.go npc/*.go npc/*/*.go
 $(TEST_TLS_EXE): test/tls/*.go
 $(RUNNER_EXE): tools/runner/*.go
-$(MANIFEST_TOOL_EXE): $(MANIFEST_TOOL_DIR)/*.go
 $(WEAVEWAIT_NOOP_EXE): prog/weavewait/*.go
 $(WEAVEWAIT_EXE): prog/weavewait/*.go net/*.go
 $(WEAVEWAIT_NOMCAST_EXE): prog/weavewait/*.go net/*.go
@@ -196,9 +196,6 @@ ifeq ($(BUILD_IN_CONTAINER),true)
 # This make target compiles all binaries inside of the weaveworks/build container
 # It bind-mounts the source into the container and passes all important variables
 exes $(EXES) tests lint: $(BUILD_UPTODATE)
-	git submodule update --init
-# Containernetworking has another copy of vishvananda/netlink which leads to duplicate definitions
-	-@rm -r vendor/github.com/containernetworking/cni/vendor
 	@mkdir -p $(shell pwd)/.pkg
 	$(SUDO) docker run $(RM) $(RUN_FLAGS) \
 	    -v $(shell pwd):/go/src/github.com/weaveworks/weave \
@@ -220,7 +217,7 @@ else
 endif
 	$(NETGO_CHECK)

-$(WEAVEUTIL_EXE) $(KUBEPEERS_EXE) $(WEAVENPC_EXE) $(NETWORKTESTER_EXE):
+$(WEAVEUTIL_EXE) $(KUBEUTILS_EXE) $(WEAVENPC_EXE) $(NETWORKTESTER_EXE):
 	go build $(BUILD_FLAGS) -o $@ ./$(@D)
 	$(NETGO_CHECK)

@@ -234,7 +231,7 @@ $(WEAVEWAIT_NOMCAST_EXE):

 # These programs need a separate rule as they fail the netgo check in
 # the main build stanza due to not importing net package
-$(SIGPROXY_EXE) $(TEST_TLS_EXE) $(WEAVEWAIT_NOOP_EXE) $(RUNNER_EXE) $(MANIFEST_TOOL_EXE):
+$(SIGPROXY_EXE) $(TEST_TLS_EXE) $(WEAVEWAIT_NOOP_EXE) $(RUNNER_EXE):
 	go build $(BUILD_FLAGS) -o $@ ./$(@D)

 tests:
@@ -274,7 +271,7 @@ endif
 $(WEAVER_UPTODATE): prog/weaver/Dockerfile.$(DOCKERHUB_USER) $(WEAVER_EXE) weave $(WEAVEUTIL_EXE)
 	cp $(WEAVEUTIL_EXE) prog/weaver/weaveutil
 	cp weave prog/weaver/weave
-	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker build -f prog/weaver/Dockerfile.$(DOCKERHUB_USER) -t $(WEAVER_IMAGE) prog/weaver
+	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker build --build-arg=revision=$(GIT_REVISION) -f prog/weaver/Dockerfile.$(DOCKERHUB_USER) -t $(WEAVER_IMAGE) prog/weaver
 	touch $@

 $(WEAVEEXEC_UPTODATE): prog/weaveexec/Dockerfile.$(DOCKERHUB_USER) prog/weaveexec/symlink $(SIGPROXY_EXE) $(WEAVEWAIT_EXE) $(WEAVEWAIT_NOOP_EXE) $(WEAVEWAIT_NOMCAST_EXE) $(WEAVER_UPTODATE)
@@ -282,7 +279,7 @@ $(WEAVEEXEC_UPTODATE): prog/weaveexec/Dockerfile.$(DOCKERHUB_USER) prog/weaveexe
 	cp $(WEAVEWAIT_EXE) prog/weaveexec/weavewait
 	cp $(WEAVEWAIT_NOOP_EXE) prog/weaveexec/weavewait_noop
 	cp $(WEAVEWAIT_NOMCAST_EXE) prog/weaveexec/weavewait_nomcast
-	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker build -f prog/weaveexec/Dockerfile.$(DOCKERHUB_USER) -t $(WEAVEEXEC_IMAGE) prog/weaveexec
+	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker build --build-arg=revision=$(GIT_REVISION) -f prog/weaveexec/Dockerfile.$(DOCKERHUB_USER) -t $(WEAVEEXEC_IMAGE) prog/weaveexec
 	touch $@

 # Builds Docker plugin.
@@ -302,17 +299,17 @@ $(PLUGIN_UPTODATE): prog/net-plugin/launch.sh prog/net-plugin/config.json $(WEAV
 	$(SUDO) docker plugin create $(PLUGIN_IMAGE):$(NET_PLUGIN_LATEST) prog/net-plugin
 	touch $@

-$(WEAVEKUBE_UPTODATE): prog/weave-kube/Dockerfile.$(DOCKERHUB_USER) prog/weave-kube/launch.sh $(KUBEPEERS_EXE) $(WEAVER_UPTODATE)
-	cp $(KUBEPEERS_EXE) prog/weave-kube/
-	$(SUDO) docker build -f prog/weave-kube/Dockerfile.$(DOCKERHUB_USER) -t $(WEAVEKUBE_IMAGE) prog/weave-kube
+$(WEAVEKUBE_UPTODATE): prog/weave-kube/Dockerfile.$(DOCKERHUB_USER) prog/weave-kube/launch.sh $(KUBEUTILS_EXE) $(WEAVER_UPTODATE)
+	cp $(KUBEUTILS_EXE) prog/weave-kube/
+	$(SUDO) docker build --build-arg=revision=$(GIT_REVISION) -f prog/weave-kube/Dockerfile.$(DOCKERHUB_USER) -t $(WEAVEKUBE_IMAGE) prog/weave-kube
 	touch $@

 $(WEAVENPC_UPTODATE): prog/weave-npc/Dockerfile.$(DOCKERHUB_USER) $(WEAVENPC_EXE) prog/weave-npc/ulogd.conf
-	$(SUDO) docker build -f prog/weave-npc/Dockerfile.$(DOCKERHUB_USER) -t $(WEAVENPC_IMAGE) prog/weave-npc
+	$(SUDO) docker build --build-arg=revision=$(GIT_REVISION) -f prog/weave-npc/Dockerfile.$(DOCKERHUB_USER) -t $(WEAVENPC_IMAGE) prog/weave-npc
 	touch $@

 $(WEAVEDB_UPTODATE): prog/weavedb/Dockerfile
-	$(SUDO) docker build -t $(WEAVEDB_IMAGE) prog/weavedb
+	$(SUDO) docker build --build-arg=revision=$(GIT_REVISION) -t $(WEAVEDB_IMAGE) prog/weavedb
 	touch $@

 $(NETWORKTESTER_UPTODATE): test/images/network-tester/Dockerfile $(NETWORKTESTER_EXE)
@@ -322,7 +319,7 @@ $(NETWORKTESTER_UPTODATE): test/images/network-tester/Dockerfile $(NETWORKTESTER
 $(WEAVE_EXPORT): $(IMAGES_UPTODATE) $(WEAVEDB_UPTODATE)
 	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker save $(addsuffix :latest,$(IMAGES)) | gzip > $@

-tools/.git $(MANIFEST_TOOL_DIR)/.git:
+tools/.git:
 	git submodule update --init

 # CODE FOR PUBLISHING THE IMAGES
@@ -378,13 +375,13 @@ endif

 # This target pushes a manifest list; it takes one parameter, the image name.
 # The variable UPDATE_LATEST controls whether it updates the versioned tag and/or the latest tag
-$(PUSH_ML): push_ml_%: $(MANIFEST_TOOL_EXE)
+$(PUSH_ML): push_ml_%:
 ifneq ($(UPDATE_LATEST),latest-only)
-	$(MANIFEST_TOOL_EXE) push from-args --platforms $(ML_PLATFORMS) --template $(DOCKERHUB_USER)/$*-ARCH:$(WEAVE_VERSION) --target $(DOCKERHUB_USER)/$*:$(WEAVE_VERSION)
+	$(MANIFEST_TOOL_CMD) push from-args --platforms $(ML_PLATFORMS) --template $(DOCKERHUB_USER)/$*-ARCH:$(WEAVE_VERSION) --target $(DOCKERHUB_USER)/$*:$(WEAVE_VERSION)
 endif
 ifneq ($(UPDATE_LATEST),false)
 # Push the manifest list to :latest as well
-	$(MANIFEST_TOOL_EXE) push from-args --platforms $(ML_PLATFORMS) --template $(DOCKERHUB_USER)/$*-ARCH:latest --target $(DOCKERHUB_USER)/$*:latest
+	$(MANIFEST_TOOL_CMD) push from-args --platforms $(ML_PLATFORMS) --template $(DOCKERHUB_USER)/$*-ARCH:latest --target $(DOCKERHUB_USER)/$*:latest
 endif

 clean-work-dir:
@@ -398,7 +395,7 @@ clean-bin:

 clean: clean-bin clean-work-dir
 	-$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker rmi $(BUILD_IMAGE)
-	rm -rf test/tls/*.pem test/coverage.* test/coverage $(BUILD_UPTODATE) $(MANIFEST_TOOL_EXE)
+	rm -rf test/tls/*.pem test/coverage.* test/coverage $(BUILD_UPTODATE)

 build:
 	$(SUDO) go clean -i net
@@ -92,6 +92,7 @@ build() {
    sed -i.bak -e "s/:latest/:$VERSION/" -e "/imagePullPolicy: Always/d" ./prog/weave-kube/weave-daemonset.yaml
    sed -i.bak -e "s/:latest/:$VERSION/" -e "/imagePullPolicy: Always/d" ./prog/weave-kube/weave-daemonset-k8s-1.6.yaml
    sed -i.bak -e "s/:latest/:$VERSION/" -e "/imagePullPolicy: Always/d" ./prog/weave-kube/weave-daemonset-k8s-1.7.yaml
+    sed -i.bak -e "s/:latest/:$VERSION/" -e "/imagePullPolicy: Always/d" ./prog/weave-kube/weave-daemonset-k8s-1.8.yaml
    make SUDO=$SUDO WEAVE_VERSION=$VERSION DOCKERHUB_USER=$DOCKERHUB_USER

    if make tests; then
@@ -181,6 +182,13 @@ draft() {
        --name "weave-daemonset-k8s-1.7.yaml" \
        --file "./prog/weave-kube/weave-daemonset-k8s-1.7.yaml"

+    github-release upload \
+        --user $GITHUB_USER \
+        --repo weave \
+        --tag $LATEST_TAG \
+        --name "weave-daemonset-k8s-1.8.yaml" \
+        --file "./prog/weave-kube/weave-daemonset-k8s-1.8.yaml"
+    
    echo "** Draft $TYPE $RELEASE_NAME $VERSION created at"
    echo -e "\thttps://github.com/$GITHUB_USER/weave/releases/$LATEST_TAG"
 }
@@ -289,6 +297,13 @@ publish() {
            --name "weave-daemonset-k8s-1.7.yaml" \
            --file "./prog/weave-kube/weave-daemonset-k8s-1.7.yaml"

+        github-release upload \
+            --user $GITHUB_USER \
+            --repo weave \
+            --tag latest_release \
+            --name "weave-daemonset-k8s-1.8.yaml" \
+            --file "./prog/weave-kube/weave-daemonset-k8s-1.8.yaml"
+
        echo "** Release $RELEASE_NAME $VERSION published at"
        echo -e "\thttps://github.com/$GITHUB_USER/weave/releases/$LATEST_TAG"
        echo -e "\thttps://github.com/$GITHUB_USER/weave/releases/latest_release"
@@ -44,7 +44,7 @@ test:
        parallel: true
    - "$SRCDIR/bin/circle-test-smoke":
        parallel: true
-        timeout: 300
+        timeout: 360
  post:
    - "$SRCDIR/bin/circle-test-teardown":
        parallel: true
@@ -231,7 +231,7 @@ func (c *Client) EnsureNetwork(networkName, driver, subnet string, options map[s
 			Name:           networkName,
 			CheckDuplicate: true,
 			Driver:         driver,
-			IPAM: docker.IPAMOptions{
+			IPAM: &docker.IPAMOptions{
 				Driver: driver,
 				Config: []docker.IPAMConfig{{Subnet: subnet}},
 			},
@@ -6,7 +6,7 @@ import (
 	"log"
 	"strings"

-	"github.com/Sirupsen/logrus"
+	"github.com/sirupsen/logrus"
 )

 type textFormatter struct {
@@ -0,0 +1,33 @@
+# Source IP addr of packet sent to k8s Service
+
+## Setup
+
+* Weave Net: v2.2.1.
+* Kubernetes: v1.10.0.
+* kube-proxy: iptables mode (default kubeadm options).
+* Hosts: `h1` and `h2`.
+
+## Source IP
+
+\# | Src         | Target            | Dst    | Src IP           | `-j WEAVE-NPC`
+---|-------------|-------------------|--------|------------------|--------------
+1  | Pod_h1      | ip(Pod_h2)        | Pod_h2 | ip(Pod_h1)       | OK
+2  | h1          | ClusterIP         | Pod_h1 | ip(weave_h1)     | **NOK**
+3  | h1          | ClusterIP         | Pod_h2 | ip(weave_h1)     | OK
+4  | Pod_h1      | ClusterIP         | Pod_h1 | ip(weave_h1)     | **NOK**
+5  | Pod_h1      | ClusterIP         | Pod_h2 | ip(weave_h1)     | OK
+6  | h1          | ip(h1):NodePort   | Pod_h1 | ip(weave_h1)     | **NOK**
+7  | h1          | ip(h1):NodePort   | Pod_h2 | ip(weave_h1)     | OK
+8  | h1          | ip(h2):NodePort   | Pod_h1 | ip(weave_h2)     | OK
+9  | h1          | ip(h2):NodePort   | Pod_h2 | ip(weave_h2)     | ??? Can't reproduce
+10 | Pod_h1      | ip(h1):NodePort   | Pod_h1 | ip(weave_h1)     | **NOK**
+11 | Pod_h1      | ip(h1):NodePort   | Pod_h2 | ip(weave_h1)     | OK
+12 | Pod_h1      | ip(h2):NodePort   | Pod_h1 | ip(weave_h2)     | OK
+13 | Pod_h1      | ip(h2):NodePort   | Pod_h2 | ip(weave_h2)     | OK
+
+Remarks:
+
+* **Src IP** is of a packet which is captured on the weave bridge.
+* **-j WEAVE-NPC** - whether a packet enters the `filter/WEAVE-NPC` iptables chain (OK = NetworkPolicy is enforced as required).
+* **Pod_h1** - a Pod running on the `h1` host.
+* **ip(weave_h1)** - IP addr of the weave bridge on the `h1` host.
@@ -127,6 +127,22 @@ Finally, for **Mainline** releases only:

 * Images tagged `latest` are updated on DockerHub

+Now, you can validate whether images were published for all platforms:
+
+    # Required platforms for each image:
+    grep '^ML_PLATFORMS=' Makefile
+
+    # Published platforms per image:
+    for img in $(grep '^PUBLISH=' Makefile); do
+        img="weaveworks/$(echo $img | cut -d_ -f2):${TAG#v}"
+        platforms=$(vendor/github.com/estesp/manifest-tool/manifest-tool \
+                inspect --raw "$img" | \
+                jq '.[].Platform | .os + "/" +.architecture' | \
+                tr '\n' ' ')
+        echo "$img: $platforms"
+    done
+
+
 ### Docker Store

 Weave Net is [available in Docker Store](https://store.docker.com/plugins/weave-net-plugin) and should also be released there.
@@ -74,6 +74,7 @@ type Allocator struct {
 	isKnownPeer       func(mesh.PeerName) bool
 	quorum            func() uint
 	now               func() time.Time
+	tracker           tracker.LocalRangeTracker
 }

 // PreClaims are IP addresses discovered before we could initialize IPAM
@@ -130,6 +131,7 @@ func NewAllocator(config Config) *Allocator {
 		quorum:      config.Quorum,
 		dead:        make(map[string]time.Time),
 		now:         time.Now,
+		tracker:     config.Tracker,
 	}

 	alloc.pendingClaims = make([]operation, len(config.PreClaims))
@@ -88,7 +88,7 @@ func (alloc *Allocator) handleHTTPClaim(dockerCli *docker.Client, w http.Respons
 }

 // HandleHTTP wires up ipams HTTP endpoints to the provided mux.
-func (alloc *Allocator) HandleHTTP(router *mux.Router, defaultSubnet address.CIDR, tracker string, dockerCli *docker.Client) {
+func (alloc *Allocator) HandleHTTP(router *mux.Router, defaultSubnet address.CIDR, dockerCli *docker.Client) {
 	router.Methods("GET").Path("/ipinfo/defaultsubnet").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		fmt.Fprintf(w, "%s", defaultSubnet)
 	})
@@ -199,6 +199,6 @@ func (alloc *Allocator) HandleHTTP(router *mux.Router, defaultSubnet address.CID
 	})

 	router.Methods("GET").Path("/ipinfo/tracker").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		fmt.Fprintf(w, tracker)
+		fmt.Fprintf(w, alloc.tracker.String())
 	})
 }
@@ -43,7 +43,7 @@ func listenHTTP(alloc *Allocator, subnet address.CIDR) int {
 	router.HandleFunc("/status", func(w http.ResponseWriter, r *http.Request) {
 		io.WriteString(w, fmt.Sprintln(alloc))
 	})
-	alloc.HandleHTTP(router, subnet, "", nil)
+	alloc.HandleHTTP(router, subnet, nil)

 	httpListener, err := net.Listen("tcp", ":0")
 	if err != nil {
@@ -132,7 +132,7 @@ func TestBadHttp(t *testing.T) {
 	// Verb that's not handled
 	resp, err := doHTTP("HEAD", fmt.Sprintf("http://localhost:%d/ip/%s/%s", port, containerID, testAddr1))
 	require.NoError(t, err)
-	require.Equal(t, http.StatusNotFound, resp.StatusCode, "http response")
+	require.Equal(t, http.StatusMethodNotAllowed, resp.StatusCode, "http response")
 	// Mis-spelled URL
 	resp, err = doHTTP("POST", fmt.Sprintf("http://localhost:%d/xip/%s/", port, containerID))
 	require.NoError(t, err)
@@ -84,7 +84,7 @@ func NewAWSVPCTracker(bridgeName string) (*AWSVPCTracker, error) {
 func (t *AWSVPCTracker) HandleUpdate(prevRanges, currRanges []address.Range, local bool) error {
 	t.debugf("replacing %q by %q; local(%t)", prevRanges, currRanges, local)

-	prev, curr := removeCommon(address.NewCIDRs(merge(prevRanges)), address.NewCIDRs(merge(currRanges)))
+	prev, curr := RemoveCommon(address.NewCIDRs(Merge(prevRanges)), address.NewCIDRs(Merge(currRanges)))

 	// It might make sense to do the removal first and then add entries
 	// because of the 50 routes limit. However, in such case a container might
@@ -123,6 +123,10 @@ func (t *AWSVPCTracker) HandleUpdate(prevRanges, currRanges []address.Range, loc
 	return nil
 }

+func (t *AWSVPCTracker) String() string {
+	return "awsvpc"
+}
+
 func (t *AWSVPCTracker) createVPCRoute(cidr string) (*ec2.CreateRouteOutput, error) {
 	route := &ec2.CreateRouteInput{
 		RouteTableId:         &t.routeTableID,
@@ -232,47 +236,6 @@ func (t *AWSVPCTracker) infof(fmt string, args ...interface{}) {

 // Helpers

-// merge merges adjacent range entries.
-// The given slice has to be sorted in increasing order.
-func merge(r []address.Range) []address.Range {
-	var merged []address.Range
-
-	for i := range r {
-		if prev := len(merged) - 1; prev >= 0 && merged[prev].End == r[i].Start {
-			merged[prev].End = r[i].End
-		} else {
-			merged = append(merged, r[i])
-		}
-	}
-
-	return merged
-}
-
-// removeCommon filters out CIDR ranges which are contained in both a and b slices.
-// Both slices have to be sorted in increasing order.
-func removeCommon(a, b []address.CIDR) (newA, newB []address.CIDR) {
-	i, j := 0, 0
-
-	for i < len(a) && j < len(b) {
-		switch {
-		case a[i].Start() < b[j].Start() || a[i].End() < b[j].End():
-			newA = append(newA, a[i])
-			i++
-		case a[i].Start() > b[j].Start() || a[i].End() > b[j].End():
-			newB = append(newB, b[j])
-			j++
-		default:
-			i++
-			j++
-		}
-
-	}
-	newA = append(newA, a[i:]...)
-	newB = append(newB, b[j:]...)
-
-	return
-}
-
 func parseCIDR(cidr string) (*net.IPNet, error) {
 	ip, ipnet, err := net.ParseCIDR(cidr)
 	if err != nil {
@@ -0,0 +1,46 @@
+package tracker
+
+import (
+	"github.com/weaveworks/weave/net/address"
+)
+
+// Merge merges adjacent range entries.
+// The given slice has to be sorted in increasing order.
+func Merge(r []address.Range) []address.Range {
+	var merged []address.Range
+
+	for i := range r {
+		if prev := len(merged) - 1; prev >= 0 && merged[prev].End == r[i].Start {
+			merged[prev].End = r[i].End
+		} else {
+			merged = append(merged, r[i])
+		}
+	}
+
+	return merged
+}
+
+// RemoveCommon filters out CIDR ranges which are contained in both a and b slices.
+// Both slices have to be sorted in increasing order.
+func RemoveCommon(a, b []address.CIDR) (newA, newB []address.CIDR) {
+	i, j := 0, 0
+
+	for i < len(a) && j < len(b) {
+		switch {
+		case a[i].Start() < b[j].Start() || a[i].End() < b[j].End():
+			newA = append(newA, a[i])
+			i++
+		case a[i].Start() > b[j].Start() || a[i].End() > b[j].End():
+			newB = append(newB, b[j])
+			j++
+		default:
+			i++
+			j++
+		}
+
+	}
+	newA = append(newA, a[i:]...)
+	newB = append(newB, b[j:]...)
+
+	return
+}
@@ -19,7 +19,7 @@ var (
 func TestRemoveCommon(t *testing.T) {
 	a := []address.CIDR{r0to127, r1dot0to255}
 	b := []address.CIDR{r1dot0to255, r2dot0to255}
-	newA, newB := removeCommon(a, b)
+	newA, newB := RemoveCommon(a, b)
 	require.Equal(t, []address.CIDR{r0to127}, newA)
 	require.Equal(t, []address.CIDR{r2dot0to255}, newB)
 }
@@ -30,7 +30,7 @@ func TestMerge(t *testing.T) {
 		r128to255.Range(),
 		r2dot0to255.Range(),
 	}
-	require.Equal(t, []address.Range{r0to255.Range(), r2dot0to255.Range()}, merge(ranges))
+	require.Equal(t, []address.Range{r0to255.Range(), r2dot0to255.Range()}, Merge(ranges))
 }

 // Helper
@@ -17,4 +17,7 @@ type LocalRangeTracker interface {
 	// The local parameter indicates whether the ranges belong to the peer
 	// by which the method is called.
 	HandleUpdate(prevRanges, currRanges []address.Range, local bool) error
+
+	// String returns the tracker name
+	String() string
 }
@@ -10,7 +10,7 @@ import (
 // Configure the ARP cache parameters for the given interface.  This
 // makes containers react more quickly to a change in the MAC address
 // associated with an IP address.
-func ConfigureARPCache(procPath, name string) error {
+func configureARPCache(procPath, name string) error {
 	if err := sysctl(procPath, fmt.Sprintf("net/ipv4/neigh/%s/base_reachable_time", name), "5"); err != nil {
 		return err
 	}
@@ -6,12 +6,18 @@ import (
 	"net"
 	"path/filepath"

-	"github.com/Sirupsen/logrus"
 	"github.com/coreos/go-iptables/iptables"
 	"github.com/pkg/errors"
+	"github.com/sirupsen/logrus"
 	"github.com/vishvananda/netlink"
+	"k8s.io/apimachinery/pkg/types"

+	"github.com/weaveworks/weave/common"
 	"github.com/weaveworks/weave/common/odp"
+	"github.com/weaveworks/weave/ipam/tracker"
+	"github.com/weaveworks/weave/net/address"
+	"github.com/weaveworks/weave/net/ipset"
+	"github.com/weaveworks/weave/npc"
 )

 /* This code implements three possible configurations to connect
@@ -47,11 +53,12 @@ datapath of old kernel versions (https://github.com/weaveworks/weave/issues/1577
 */

 const (
-	WeaveBridgeName = "weave"
-	DatapathName    = "datapath"
-	DatapathIfName  = "vethwe-datapath"
-	BridgeIfName    = "vethwe-bridge"
-	PcapIfName      = "vethwe-pcap"
+	WeaveBridgeName  = "weave"
+	DatapathName     = "datapath"
+	DatapathIfName   = "vethwe-datapath"
+	BridgeIfName     = "vethwe-bridge"
+	PcapIfName       = "vethwe-pcap"
+	NoMasqLocalIpset = ipset.Name("weaver-no-masq-local")
 )

 type Bridge interface {
@@ -213,6 +220,7 @@ type BridgeConfig struct {
 	MTU              int
 	Mac              string
 	Port             int
+	NoMasqLocal      bool
 }

 func (config *BridgeConfig) configuredBridgeType() Bridge {
@@ -226,7 +234,7 @@ func (config *BridgeConfig) configuredBridgeType() Bridge {
 	}
 }

-func EnsureBridge(procPath string, config *BridgeConfig, log *logrus.Logger) (Bridge, error) {
+func EnsureBridge(procPath string, config *BridgeConfig, log *logrus.Logger, ips ipset.Interface) (Bridge, error) {
 	existingBridgeType, err := ExistingBridgeType(config.WeaveBridgeName, config.DatapathName)
 	if err != nil {
 		return nil, err
@@ -252,7 +260,7 @@ func EnsureBridge(procPath string, config *BridgeConfig, log *logrus.Logger) (Br
 		break
 	}

-	if err := configureIPTables(config); err != nil {
+	if err := configureIPTables(config, ips); err != nil {
 		return bridgeType, errors.Wrap(err, "configuring iptables")
 	}

@@ -275,10 +283,16 @@ func EnsureBridge(procPath string, config *BridgeConfig, log *logrus.Logger) (Br
 		return bridgeType, err
 	}

-	if err := ConfigureARPCache(procPath, config.WeaveBridgeName); err != nil {
+	if err := configureARPCache(procPath, config.WeaveBridgeName); err != nil {
 		return bridgeType, errors.Wrapf(err, "configuring ARP cache on bridge %q", config.WeaveBridgeName)
 	}

+	// NB: No concurrent call to Expose is possible, as EnsureBridge is called
+	// before any service has been started.
+	if err := reexpose(config, log); err != nil {
+		return bridgeType, err
+	}
+
 	return bridgeType, nil
 }

@@ -404,7 +418,7 @@ func (f fastdpImpl) attach(veth *netlink.Veth) error {
 	return odp.AddDatapathInterfaceIfNotExist(f.datapathName, veth.Attrs().Name)
 }

-func configureIPTables(config *BridgeConfig) error {
+func configureIPTables(config *BridgeConfig, ips ipset.Interface) error {
 	ipt, err := iptables.New()
 	if err != nil {
 		return errors.Wrap(err, "creating iptables object")
@@ -444,14 +458,27 @@ func configureIPTables(config *BridgeConfig) error {
 	}

 	if config.NPC {
-		// Steer traffic via the NPC
-		_ = ipt.NewChain("filter", "WEAVE-NPC") // ignore error because it might already exist
-		// If WEAVE-NPC chain doesn't exist then creating a rule in the chain will fail
+		// Steer traffic via the NPC.
+
+		if err = ensureChains(ipt, "filter", npc.MainChain, npc.EgressChain); err != nil {
+			return err
+		}
+
+		// Steer egress traffic destined to local node.
+		if err = ipt.AppendUnique("filter", "INPUT", "-i", config.WeaveBridgeName, "-j", npc.EgressChain); err != nil {
+			return err
+		}
 		fwdRules = append(fwdRules,
 			[][]string{
+				// Might include ingress traffic which is fine as long as we do not
+				// ACCEPT in WEAVE-NPC-EGRESS chain
+				{"-i", config.WeaveBridgeName,
+					"-m", "comment", "--comment", "NOTE: this must go before '-j KUBE-FORWARD'",
+					"-j", npc.EgressChain},
+				// The following rules are for ingress NPC processing
 				{"-o", config.WeaveBridgeName,
 					"-m", "comment", "--comment", "NOTE: this must go before '-j KUBE-FORWARD'",
-					"-j", "WEAVE-NPC"},
+					"-j", npc.MainChain},
 				{"-o", config.WeaveBridgeName, "-m", "state", "--state", "NEW", "-j", "NFLOG", "--nflog-group", "86"},
 				{"-o", config.WeaveBridgeName, "-j", "DROP"},
 			}...)
@@ -462,8 +489,11 @@ func configureIPTables(config *BridgeConfig) error {
 	}

 	if !config.NPC {
-		// Create a chain for allowing ingress traffic when the bridge is exposed
-		_ = ipt.NewChain("filter", "WEAVE-EXPOSE")
+		// Create/Flush a chain for allowing ingress traffic when the bridge is exposed
+		if err := ipt.ClearChain("filter", "WEAVE-EXPOSE"); err != nil {
+			return errors.Wrap(err, "failed to clear/create filter/WEAVE-EXPOSE chain")
+		}
+
 		fwdRules = append(fwdRules, []string{"-o", config.WeaveBridgeName, "-j", "WEAVE-EXPOSE"})
 	}

@@ -476,13 +506,74 @@ func configureIPTables(config *BridgeConfig) error {
 		return err
 	}

-	// create a chain for masquerading
-	//
-	// NB: we do not clear the chain to preserve existing rules
-	// inserted by "weave expose".
-	_ = ipt.NewChain("nat", "WEAVE")
+	// Create a chain for masquerading
+	if err := ipt.ClearChain("nat", "WEAVE"); err != nil {
+		return errors.Wrap(err, "failed to clear/create nat/WEAVE chain")
+	}
+	if err := ipt.AppendUnique("nat", "POSTROUTING", "-j", "WEAVE"); err != nil {
+		return err
+	}

-	return ipt.AppendUnique("nat", "POSTROUTING", "-j", "WEAVE")
+	// For the cases where the weave bridge is the default gateway for
+	// containers (e.g. Kubernetes): create the ipset to store CIDRs allocated
+	// by IPAM for local containers. In the case of Kubernetes, external traffic
+	// sent to these CIDRs avoids SNAT'ing so that NodePort with
+	// `"externalTrafficPolicy":"Local"` would receive packets with correct
+	// src IP addr.
+	if config.NoMasqLocal {
+		ips := ipset.New(common.LogLogger(), 0)
+		_ = ips.Destroy(NoMasqLocalIpset)
+		if err := ips.Create(NoMasqLocalIpset, ipset.HashNet); err != nil {
+			return err
+		}
+		if err := ipt.Insert("nat", "WEAVE", 1,
+			"-m", "set", "--match-set", string(NoMasqLocalIpset), "dst",
+			"-m", "comment", "--comment", "Prevent SNAT to locally running containers",
+			"-j", "RETURN"); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+type NoMasqLocalTracker struct {
+	ips   ipset.Interface
+	owner types.UID
+}
+
+func NewNoMasqLocalTracker(ips ipset.Interface) *NoMasqLocalTracker {
+	return &NoMasqLocalTracker{
+		ips:   ips,
+		owner: types.UID(0), // dummy ipset owner
+	}
+}
+
+func (t *NoMasqLocalTracker) String() string {
+	return "no-masq-local"
+}
+
+func (t *NoMasqLocalTracker) HandleUpdate(prevRanges, currRanges []address.Range, local bool) error {
+	if !local {
+		return nil
+	}
+
+	prev, curr := tracker.RemoveCommon(
+		address.NewCIDRs(tracker.Merge(prevRanges)),
+		address.NewCIDRs(tracker.Merge(currRanges)))
+
+	for _, cidr := range curr {
+		if err := t.ips.AddEntry(t.owner, NoMasqLocalIpset, cidr.String(), ""); err != nil {
+			return err
+		}
+	}
+	for _, cidr := range prev {
+		if err := t.ips.DelEntry(t.owner, NoMasqLocalIpset, cidr.String()); err != nil {
+			return err
+		}
+	}
+
+	return nil
 }

 func linkSetUpByName(linkName string) error {
@@ -493,37 +584,26 @@ func linkSetUpByName(linkName string) error {
 	return netlink.LinkSetUp(link)
 }

-// ensureRulesAtTop ensures the presence of given iptables rules.
-//
-// If any rule from the list is missing, the function deletes all given
-// rules and re-inserts them at the top of the chain to ensure the order of the rules.
-func ensureRulesAtTop(table, chain string, rulespecs [][]string, ipt *iptables.IPTables) error {
-	allFound := true
-
-	for _, rs := range rulespecs {
-		found, err := ipt.Exists(table, chain, rs...)
-		if err != nil {
-			return errors.Wrapf(err, "ipt.Exists(%s, %s, %s)", table, chain, rs)
-		}
-		if !found {
-			allFound = false
-			break
-		}
+func reexpose(config *BridgeConfig, log *logrus.Logger) error {
+	// Get existing IP addrs of the weave bridge.
+	// If the bridge hasn't been exposed, then this functions does nothing.
+	//
+	// Ideally, we should consult IPAM for IP addrs allocated to "weave:expose",
+	// but we don't want to introduce dependency on IPAM, as weave should be able
+	// to run w/o IPAM.
+	link, err := netlink.LinkByName(config.WeaveBridgeName)
+	if err != nil {
+		return errors.Wrapf(err, "cannot find bridge %q", config.WeaveBridgeName)
+	}
+	addrs, err := netlink.AddrList(link, netlink.FAMILY_V4)
+	if err != nil {
+		return errors.Wrapf(err, "cannot list IPv4 addrs of bridge %q", config.WeaveBridgeName)
 	}

-	// All rules exist, do nothing.
-	if allFound {
-		return nil
-	}
-
-	for pos, rs := range rulespecs {
-		// If any is missing, then delete all, as we need to preserve the order of
-		// given rules. Ignore errors, as rule might not exist.
-		if !allFound {
-			ipt.Delete(table, chain, rs...)
-		}
-		if err := ipt.Insert(table, chain, pos+1, rs...); err != nil {
-			return errors.Wrapf(err, "ipt.Append(%s, %s, %s)", table, chain, rs)
+	for _, addr := range addrs {
+		log.Infof("Re-exposing %s on bridge %q", addr.IPNet, config.WeaveBridgeName)
+		if err := Expose(config.WeaveBridgeName, addr.IPNet, config.AWSVPC, config.NPC); err != nil {
+			return errors.Wrapf(err, "unable to re-expose %s on bridge: %q", addr.IPNet, config.WeaveBridgeName)
 		}
 	}

@@ -12,9 +12,9 @@ import (
 	"sync"
 	"syscall"

-	"github.com/Sirupsen/logrus"
 	"github.com/coreos/go-iptables/iptables"
 	"github.com/pkg/errors"
+	"github.com/sirupsen/logrus"
 	"github.com/vishvananda/netlink"
 	"golang.org/x/crypto/hkdf"

@@ -1,6 +1,9 @@
 package ipset

 import (
+	"crypto/rand"
+	"encoding/hex"
+	"fmt"
 	"log"
 	"os/exec"
 	"strings"
@@ -16,6 +19,7 @@ type Type string
 const (
 	ListSet = Type("list:set")
 	HashIP  = Type("hash:ip")
+	HashNet = Type("hash:net")
 )

 type Interface interface {
@@ -40,6 +44,7 @@ type entryKey struct {
 type ipset struct {
 	*log.Logger
 	enableComments bool
+	maxListSize    int
 	// List of users per ipset entry. User is either a namespace or a pod.
 	// There might be multiple users for the same ipset & entry pair because
 	// events from k8s API server might be out of order causing duplicate IPs:
@@ -47,15 +52,23 @@ type ipset struct {
 	users map[entryKey]map[types.UID]struct{}
 }

-func New(logger *log.Logger) Interface {
+func New(logger *log.Logger, maxListSize int) Interface {
 	ips := &ipset{
 		Logger:         logger,
 		enableComments: true,
+		maxListSize:    maxListSize,
 		users:          make(map[entryKey]map[types.UID]struct{}),
 	}

 	// Check for comment support
-	testIpsetName := Name("weave-test-comment")
+
+	// To prevent from a race when more than one process check for the support
+	// we append a random nonce to the test ipset name. The final name is
+	// shorter than 31 chars (max ipset name).
+	nonce := make([]byte, 4)
+	rand.Read(nonce)
+	testIpsetName := Name("weave-test-comment" + hex.EncodeToString(nonce))
+
 	// Clear it out if it already exists
 	_ = ips.Destroy(testIpsetName)
 	// Test for comment support
@@ -71,6 +84,9 @@ func New(logger *log.Logger) Interface {

 func (i *ipset) Create(ipsetName Name, ipsetType Type) error {
 	args := []string{"create", string(ipsetName), string(ipsetType)}
+	if ipsetType == ListSet && i.maxListSize > 0 {
+		args = append(args, "size", fmt.Sprintf("%d", i.maxListSize))
+	}
 	if i.enableComments {
 		args = append(args, "comment")
 	}
@@ -0,0 +1,106 @@
+package net
+
+import (
+	"strings"
+
+	"github.com/coreos/go-iptables/iptables"
+	"github.com/pkg/errors"
+)
+
+// AddChainWithRules creates a chain and appends given rules to it.
+//
+// If the chain exists, but its rules are not the same as the given ones, the
+// function will flush the chain and then will append the rules.
+func AddChainWithRules(ipt *iptables.IPTables, table, chain string, rulespecs [][]string) error {
+	if err := ensureChains(ipt, table, chain); err != nil {
+		return err
+	}
+
+	currRuleSpecs, err := ipt.List(table, chain)
+	if err != nil {
+		return errors.Wrapf(err, "iptables -S. table: %q, chain: %q", table, chain)
+	}
+
+	// First returned rule is "-N $(chain)", so ignore it
+	currRules := strings.Join(currRuleSpecs[1:], "\n")
+	rules := make([]string, 0)
+	for _, r := range rulespecs {
+		rules = append(rules, strings.Join(r, " "))
+	}
+	reqRules := strings.Join(rules, "\n")
+
+	if currRules == reqRules {
+		return nil
+	}
+
+	if err := ipt.ClearChain(table, chain); err != nil {
+		return err
+	}
+
+	for _, r := range rulespecs {
+		if err := ipt.Append(table, chain, r...); err != nil {
+			return errors.Wrapf(err, "iptables -A. table: %q, chain: %q, rule: %s", table, chain, r)
+		}
+	}
+
+	return nil
+}
+
+// ensureChains creates given chains if they do not exist.
+func ensureChains(ipt *iptables.IPTables, table string, chains ...string) error {
+	existingChains, err := ipt.ListChains(table)
+	if err != nil {
+		return errors.Wrapf(err, "ipt.ListChains(%s)", table)
+	}
+	chainMap := make(map[string]struct{})
+	for _, c := range existingChains {
+		chainMap[c] = struct{}{}
+	}
+
+	for _, c := range chains {
+		if _, found := chainMap[c]; !found {
+			if err := ipt.NewChain(table, c); err != nil {
+				return errors.Wrapf(err, "ipt.NewChain(%s, %s)", table, c)
+			}
+		}
+	}
+
+	return nil
+}
+
+// ensureRulesAtTop ensures the presence of given iptables rules.
+//
+// If any rule from the list is missing, the function deletes all given
+// rules and re-inserts them at the top of the chain to ensure the order of the rules.
+func ensureRulesAtTop(table, chain string, rulespecs [][]string, ipt *iptables.IPTables) error {
+	allFound := true
+
+	for _, rs := range rulespecs {
+		found, err := ipt.Exists(table, chain, rs...)
+		if err != nil {
+			return errors.Wrapf(err, "ipt.Exists(%s, %s, %s)", table, chain, rs)
+		}
+		if !found {
+			allFound = false
+			break
+		}
+	}
+
+	// All rules exist, do nothing.
+	if allFound {
+		return nil
+	}
+
+	for pos, rs := range rulespecs {
+		// If any is missing, then delete all, as we need to preserve the order of
+		// given rules. Ignore errors, as rule might not exist.
+		if !allFound {
+			ipt.Delete(table, chain, rs...)
+		}
+		if err := ipt.Insert(table, chain, pos+1, rs...); err != nil {
+			return errors.Wrapf(err, "ipt.Append(%s, %s, %s)", table, chain, rs)
+		}
+	}
+
+	return nil
+}
@@ -1,11 +1,9 @@
 package net

 import (
-	"encoding/json"
 	"fmt"
 	"net"
 	"os"
-	"strconv"

 	"github.com/vishvananda/netlink"
 	"github.com/vishvananda/netns"
@@ -17,7 +15,7 @@ type Dev struct {
 	CIDRs []*net.IPNet     `json:"CIDRs,omitempty"`
 }

-func LinkToNetDev(link netlink.Link) (Dev, error) {
+func linkToNetDev(link netlink.Link) (Dev, error) {
 	addrs, err := netlink.AddrList(link, netlink.FAMILY_V4)
 	if err != nil {
 		return Dev{}, err
@@ -90,16 +88,30 @@ func GetNetDevsByVethPeerIds(processID int, peerIDs []int) ([]Dev, error) {
 		return nil, nil
 	}

+	// convert list of peerIDs into a map for faster lookup
+	indexes := make(map[int]struct{})
+	for _, id := range peerIDs {
+		indexes[id] = struct{}{}
+	}
+
 	var netdevs []Dev
-	peersStr := make([]string, len(peerIDs))
-	for i, id := range peerIDs {
-		peersStr[i] = strconv.Itoa(id)
-	}
-	nds, err := WithNetNSByPid(processID, "list-netdevs", peersStr...)
-	if err != nil {
-		return nil, fmt.Errorf("list-netdevs failed: %s", err)
-	}
-	err = json.Unmarshal(nds, &netdevs)
+	err = WithNetNS(netnsContainer, func() error {
+		links, err := netlink.LinkList()
+		if err != nil {
+			return err
+		}
+
+		for _, link := range links {
+			if _, found := indexes[link.Attrs().Index]; found {
+				netdev, err := linkToNetDev(link)
+				if err != nil {
+					return err
+				}
+				netdevs = append(netdevs, netdev)
+			}
+		}
+		return nil
+	})

 	return netdevs, err
 }
@@ -112,5 +124,5 @@ func GetBridgeNetDev(bridgeName string) (Dev, error) {
 		return Dev{}, err
 	}

-	return LinkToNetDev(link)
+	return linkToNetDev(link)
 }
@@ -1,10 +1,10 @@
+// +build go1.10
+
 package net

 import (
-	"bytes"
 	"errors"
 	"fmt"
-	"os/exec"
 	"path/filepath"
 	"runtime"

@@ -14,19 +14,7 @@ import (

 var ErrLinkNotFound = errors.New("Link not found")

-// NB: The following function is unsafe, because:
-//     - It changes a network namespace (netns) of an OS thread which runs
-//       the function. During execution, the Go runtime might clone a new OS thread
-//       for scheduling other go-routines, thus they might end up running in
-//       a "wrong" netns.
-//     - runtime.LockOSThread does not guarantee that a spawned go-routine on
-//       the locked thread will be run by it. Thus, the work function is
-//       not allowed to spawn any go-routine which is dependent on the given netns.
-
-//     Please see https://github.com/weaveworks/weave/issues/2388#issuecomment-228365069
-//     for more details and make sure that you understand the implications before
-//     using the function!
-func WithNetNSUnsafe(ns netns.NsHandle, work func() error) error {
+func WithNetNS(ns netns.NsHandle, work func() error) error {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()

@@ -45,8 +33,8 @@ func WithNetNSUnsafe(ns netns.NsHandle, work func() error) error {
 	return err
 }

-func WithNetNSLinkUnsafe(ns netns.NsHandle, ifName string, work func(link netlink.Link) error) error {
-	return WithNetNSUnsafe(ns, func() error {
+func WithNetNSLink(ns netns.NsHandle, ifName string, work func(link netlink.Link) error) error {
+	return WithNetNS(ns, func() error {
 		link, err := netlink.LinkByName(ifName)
 		if err != nil {
 			if err.Error() == errors.New("Link not found").Error() {
@@ -58,26 +46,12 @@ func WithNetNSLinkUnsafe(ns netns.NsHandle, ifName string, work func(link netlin
 	})
 }

-var WeaveUtilCmd = "weaveutil"
-
-// A safe version of WithNetNS* which creates a process executing
-// "nsenter --net=<ns-path> weaveutil <cmd> [args]".
-func WithNetNS(nsPath string, cmd string, args ...string) ([]byte, error) {
-	var stdout, stderr bytes.Buffer
-
-	args = append([]string{"--net=" + nsPath, WeaveUtilCmd, cmd}, args...)
-	c := exec.Command("nsenter", args...)
-	c.Stdout = &stdout
-	c.Stderr = &stderr
-	if err := c.Run(); err != nil {
-		return nil, fmt.Errorf("%s: %s", string(stderr.Bytes()), err)
+func WithNetNSByPath(path string, work func() error) error {
+	ns, err := netns.GetFromPath(path)
+	if err != nil {
+		return err
 	}
-
-	return stdout.Bytes(), nil
-}
-
-func WithNetNSByPid(pid int, cmd string, args ...string) ([]byte, error) {
-	return WithNetNS(NSPathByPid(pid), cmd, args...)
+	return WithNetNS(ns, work)
 }

 func NSPathByPid(pid int) string {
@@ -104,7 +104,10 @@ const (
 )

 func interfaceExistsInNamespace(netNSPath string, ifName string) bool {
-	_, err := WithNetNS(netNSPath, "check-iface", ifName)
+	err := WithNetNSByPath(netNSPath, func() error {
+		_, err := netlink.LinkByName(ifName)
+		return err
+	})
 	return err == nil
 }

@@ -125,7 +128,9 @@ func AttachContainer(netNSPath, id, ifName, bridgeName string, mtu int, withMult
 			if err := netlink.LinkSetNsFd(veth, int(ns)); err != nil {
 				return fmt.Errorf("failed to move veth to container netns: %s", err)
 			}
-			if _, err := WithNetNS(netNSPath, "setup-iface", peerName, ifName); err != nil {
+			if err := WithNetNS(ns, func() error {
+				return setupIface(peerName, ifName)
+			}); err != nil {
 				return fmt.Errorf("error setting up interface: %s", err)
 			}
 			return nil
@@ -139,19 +144,16 @@ func AttachContainer(netNSPath, id, ifName, bridgeName string, mtu int, withMult

 	}

-	args := []string{ifName, fmt.Sprintf("%t", withMulticastRoute)}
-	for _, cidr := range cidrs {
-		args = append(args, cidr.String())
-	}
-	if _, err := WithNetNS(netNSPath, "setup-iface-addrs", args...); err != nil {
+	if err := WithNetNSLink(ns, ifName, func(veth netlink.Link) error {
+		return setupIfaceAddrs(veth, withMulticastRoute, cidrs)
+	}); err != nil {
 		return fmt.Errorf("error setting up interface addresses: %s", err)
 	}
 	return nil
 }

-// SetupIfaceAddrs is the implementation of the 'setup-iface-addrs' call above,
-// running in another process in the container's netns
-func SetupIfaceAddrs(veth netlink.Link, withMulticastRoute bool, cidrs []*net.IPNet) error {
+// setupIfaceAddrs expects to be called in the container's netns
+func setupIfaceAddrs(veth netlink.Link, withMulticastRoute bool, cidrs []*net.IPNet) error {
 	newAddresses, err := AddAddresses(veth, cidrs)
 	if err != nil {
 		return err
@@ -203,9 +205,8 @@ func SetupIfaceAddrs(veth netlink.Link, withMulticastRoute bool, cidrs []*net.IP
 	return nil
 }

-// SetupIface is the implementation of the 'setup-iface' call above,
-// running in another process in the container's netns
-func SetupIface(ifaceName, newIfName string) error {
+// setupIface expects to be called in the container's netns
+func setupIface(ifaceName, newIfName string) error {
 	ipt, err := iptables.New()
 	if err != nil {
 		return err
@@ -219,14 +220,32 @@ func SetupIface(ifaceName, newIfName string) error {
 		return err
 	}
 	// This is only called by AttachContainer which is only called in host pid namespace
-	if err := ConfigureARPCache("/proc", newIfName); err != nil {
+	if err := configureARPCache("/proc", newIfName); err != nil {
 		return err
 	}
 	return ipt.Append("filter", "INPUT", "-i", newIfName, "-d", "224.0.0.0/4", "-j", "DROP")
 }

-// NB: This function can be used only by a process that terminates immediately
-//     after calling the function as it changes netns via WithNetNSLinkUnsafe.
+// configureARP is a helper for the Docker plugin which doesn't set the addresses itself
+func ConfigureARP(prefix, rootPath string) error {
+	links, err := netlink.LinkList()
+	if err != nil {
+		return err
+	}
+	for _, link := range links {
+		ifName := link.Attrs().Name
+		if strings.HasPrefix(ifName, prefix) {
+			configureARPCache(rootPath+"/proc", ifName)
+			if addrs, err := netlink.AddrList(link, netlink.FAMILY_V4); err == nil {
+				for _, addr := range addrs {
+					arping.GratuitousArpOverIfaceByName(addr.IPNet.IP, ifName)
+				}
+			}
+		}
+	}
+	return nil
+}
+
 func DetachContainer(netNSPath, id, ifName string, cidrs []*net.IPNet) error {
 	ns, err := netns.GetFromPath(netNSPath)
 	if err != nil {
@@ -239,7 +258,7 @@ func DetachContainer(netNSPath, id, ifName string, cidrs []*net.IPNet) error {
 		return err
 	}

-	return WithNetNSLinkUnsafe(ns, ifName, func(veth netlink.Link) error {
+	return WithNetNSLink(ns, ifName, func(veth netlink.Link) error {
 		existingAddrs, err := netlink.AddrList(veth, netlink.FAMILY_V4)
 		if err != nil {
 			return fmt.Errorf("failed to get IP address for %q: %v", veth.Attrs().Name, err)
@@ -4,173 +4,158 @@ import (
 	"fmt"

 	apiv1 "k8s.io/api/core/v1"
-	extnapi "k8s.io/api/extensions/v1beta1"
 	networkingv1 "k8s.io/api/networking/v1"
 	"k8s.io/apimachinery/pkg/util/intstr"

-	"github.com/weaveworks/weave/npc/ipset"
+	"github.com/weaveworks/weave/net/ipset"
 )

-// analysePolicyLegacy is used to analyse extensions/v1beta1/NetworkPolicy (legacy) and
-// implements pre-1.7 k8s netpol semantics, whilst analysePolicy - networking.k8s.io/v1/NetworkPolicy
-// and 1.7 semantics.
-
-func (ns *ns) analysePolicyLegacy(policy *extnapi.NetworkPolicy) (
-	rules map[string]*ruleSpec,
-	nsSelectors, podSelectors map[string]*selectorSpec,
-	err error) {
-
-	nsSelectors = make(map[string]*selectorSpec)
-	podSelectors = make(map[string]*selectorSpec)
-	rules = make(map[string]*ruleSpec)
-
-	dstSelector, err := newSelectorSpec(&policy.Spec.PodSelector, true, ns.name, ipset.HashIP)
-	if err != nil {
-		return nil, nil, nil, err
-	}
-	podSelectors[dstSelector.key] = dstSelector
-
-	for _, ingressRule := range policy.Spec.Ingress {
-		if ingressRule.Ports != nil && len(ingressRule.Ports) == 0 {
-			// Ports is empty, this rule matches no ports (no traffic matches).
-			continue
-		}
-
-		if ingressRule.From != nil && len(ingressRule.From) == 0 {
-			// From is empty, this rule matches no sources (no traffic matches).
-			continue
-		}
-
-		if ingressRule.From == nil {
-			// From is not provided, this rule matches all sources (traffic not restricted by source).
-			if ingressRule.Ports == nil {
-				// Ports is not provided, this rule matches all ports (traffic not restricted by port).
-				rule := newRuleSpec(nil, nil, dstSelector, nil)
-				rules[rule.key] = rule
-			} else {
-				// Ports is present and contains at least one item, then this rule allows traffic
-				// only if the traffic matches at least one port in the ports list.
-				withNormalisedProtoAndPortLegacy(ingressRule.Ports, func(proto, port string) {
-					rule := newRuleSpec(&proto, nil, dstSelector, &port)
-					rules[rule.key] = rule
-				})
-			}
-		} else {
-			// From is present and contains at least on item, this rule allows traffic only if the
-			// traffic matches at least one item in the from list.
-			for _, peer := range ingressRule.From {
-				var srcSelector *selectorSpec
-				if peer.PodSelector != nil {
-					srcSelector, err = newSelectorSpec(peer.PodSelector, false, ns.name, ipset.HashIP)
-					if err != nil {
-						return nil, nil, nil, err
-					}
-					podSelectors[srcSelector.key] = srcSelector
-				}
-				if peer.NamespaceSelector != nil {
-					srcSelector, err = newSelectorSpec(peer.NamespaceSelector, false, "", ipset.ListSet)
-					if err != nil {
-						return nil, nil, nil, err
-					}
-					nsSelectors[srcSelector.key] = srcSelector
-				}
-
-				if ingressRule.Ports == nil {
-					// Ports is not provided, this rule matches all ports (traffic not restricted by port).
-					rule := newRuleSpec(nil, srcSelector, dstSelector, nil)
-					rules[rule.key] = rule
-				} else {
-					// Ports is present and contains at least one item, then this rule allows traffic
-					// only if the traffic matches at least one port in the ports list.
-					withNormalisedProtoAndPortLegacy(ingressRule.Ports, func(proto, port string) {
-						rule := newRuleSpec(&proto, srcSelector, dstSelector, &port)
-						rules[rule.key] = rule
-					})
-				}
-			}
-		}
-	}
-
-	return rules, nsSelectors, podSelectors, nil
-}
-
 func (ns *ns) analysePolicy(policy *networkingv1.NetworkPolicy) (
 	rules map[string]*ruleSpec,
 	nsSelectors, podSelectors map[string]*selectorSpec,
+	ipBlocks map[string]*ipBlockSpec,
 	err error) {

 	nsSelectors = make(map[string]*selectorSpec)
 	podSelectors = make(map[string]*selectorSpec)
+	ipBlocks = make(map[string]*ipBlockSpec)
 	rules = make(map[string]*ruleSpec)
+	policyTypes := make([]policyType, 0)

+	for _, pt := range policy.Spec.PolicyTypes {
+		if pt == networkingv1.PolicyTypeIngress {
+			policyTypes = append(policyTypes, policyTypeIngress)
+		}
+		if pt == networkingv1.PolicyTypeEgress {
+			policyTypes = append(policyTypes, policyTypeEgress)
+		}
+	}
 	// If empty, matches all pods in a namespace
-	dstSelector, err := newSelectorSpec(&policy.Spec.PodSelector, true, ns.name, ipset.HashIP)
+	targetSelector, err := newSelectorSpec(&policy.Spec.PodSelector, policyTypes, ns.name, ipset.HashIP)
 	if err != nil {
-		return nil, nil, nil, err
+		return nil, nil, nil, nil, err
 	}

-	// To prevent dstSelector being overwritten by a subsequent selector with
+	// To prevent targetSelector being overwritten by a subsequent selector with
 	// the same key, addIfNotExist MUST be used when adding to podSelectors.
-	// Otherwise, dstSelector' "dst" property might be lost resulting in
-	// an invalid content of the "default-allow" ipset.
-	addIfNotExist(dstSelector, podSelectors)
+	// Otherwise, policyTypes of the selector might be lost resulting in
+	// an invalid content in any "default-allow" ipset.
+	addIfNotExist(targetSelector, podSelectors)

-	// If ingress is empty then this NetworkPolicy does not allow any traffic
-	if policy.Spec.Ingress == nil || len(policy.Spec.Ingress) == 0 {
-		return
-	}
-
-	for _, ingressRule := range policy.Spec.Ingress {
-		// If Ports is empty or missing, this rule matches all ports
-		allPorts := ingressRule.Ports == nil || len(ingressRule.Ports) == 0
-		// If From is empty or missing, this rule matches all sources
-		allSources := ingressRule.From == nil || len(ingressRule.From) == 0
-
-		if allSources {
-			if allPorts {
-				rule := newRuleSpec(nil, nil, dstSelector, nil)
-				rules[rule.key] = rule
-			} else {
-				withNormalisedProtoAndPort(ingressRule.Ports, func(proto, port string) {
-					rule := newRuleSpec(&proto, nil, dstSelector, &port)
-					rules[rule.key] = rule
-				})
-			}
-		} else {
-			for _, peer := range ingressRule.From {
-				var srcSelector *selectorSpec
-
-				// NetworkPolicyPeer describes a peer to allow traffic from.
-				// Exactly one of its fields must be specified.
-				if peer.PodSelector != nil {
-					srcSelector, err = newSelectorSpec(peer.PodSelector, false, ns.name, ipset.HashIP)
-					if err != nil {
-						return nil, nil, nil, err
-					}
-					addIfNotExist(srcSelector, podSelectors)
-
-				} else if peer.NamespaceSelector != nil {
-					srcSelector, err = newSelectorSpec(peer.NamespaceSelector, false, "", ipset.ListSet)
-					if err != nil {
-						return nil, nil, nil, err
-					}
-					nsSelectors[srcSelector.key] = srcSelector
-				}
+	// If ingress is empty then this NetworkPolicy does not allow any ingress traffic
+	if policy.Spec.Ingress != nil && len(policy.Spec.Ingress) != 0 {
+		for _, ingressRule := range policy.Spec.Ingress {
+			// If Ports is empty or missing, this rule matches all ports
+			allPorts := ingressRule.Ports == nil || len(ingressRule.Ports) == 0
+			// If From is empty or missing, this rule matches all sources
+			allSources := ingressRule.From == nil || len(ingressRule.From) == 0

+			if allSources {
 				if allPorts {
-					rule := newRuleSpec(nil, srcSelector, dstSelector, nil)
+					rule := newRuleSpec(policyTypeIngress, nil, nil, targetSelector, nil)
 					rules[rule.key] = rule
 				} else {
 					withNormalisedProtoAndPort(ingressRule.Ports, func(proto, port string) {
-						rule := newRuleSpec(&proto, srcSelector, dstSelector, &port)
+						rule := newRuleSpec(policyTypeIngress, &proto, nil, targetSelector, &port)
 						rules[rule.key] = rule
 					})
 				}
+			} else {
+				for _, peer := range ingressRule.From {
+					var srcSelector *selectorSpec
+
+					// NetworkPolicyPeer describes a peer to allow traffic from.
+					// Exactly one of its fields must be specified.
+					if peer.PodSelector != nil {
+						srcSelector, err = newSelectorSpec(peer.PodSelector, nil, ns.name, ipset.HashIP)
+						if err != nil {
+							return nil, nil, nil, nil, err
+						}
+						addIfNotExist(srcSelector, podSelectors)
+
+					} else if peer.NamespaceSelector != nil {
+						srcSelector, err = newSelectorSpec(peer.NamespaceSelector, nil, "", ipset.ListSet)
+						if err != nil {
+							return nil, nil, nil, nil, err
+						}
+						nsSelectors[srcSelector.key] = srcSelector
+					}
+
+					if allPorts {
+						rule := newRuleSpec(policyTypeIngress, nil, srcSelector, targetSelector, nil)
+						rules[rule.key] = rule
+					} else {
+						withNormalisedProtoAndPort(ingressRule.Ports, func(proto, port string) {
+							rule := newRuleSpec(policyTypeIngress, &proto, srcSelector, targetSelector, &port)
+							rules[rule.key] = rule
+						})
+					}
+				}
 			}
 		}
 	}

-	return rules, nsSelectors, podSelectors, nil
+	// If egress is empty then this NetworkPolicy does not allow any egress traffic
+	if policy.Spec.Egress != nil && len(policy.Spec.Egress) != 0 {
+		for _, egressRule := range policy.Spec.Egress {
+			// If Ports is empty or missing, this rule matches all ports
+			allPorts := egressRule.Ports == nil || len(egressRule.Ports) == 0
+			// If To is empty or missing, this rule matches all destinations
+			allDestinations := egressRule.To == nil || len(egressRule.To) == 0
+
+			if allDestinations {
+				if allPorts {
+					rule := newRuleSpec(policyTypeEgress, nil, targetSelector, nil, nil)
+					rules[rule.key] = rule
+				} else {
+					withNormalisedProtoAndPort(egressRule.Ports, func(proto, port string) {
+						rule := newRuleSpec(policyTypeEgress, &proto, targetSelector, nil, &port)
+						rules[rule.key] = rule
+					})
+				}
+			} else {
+				for _, peer := range egressRule.To {
+					var dstSelector *selectorSpec
+					var dstRuleHost ruleHost
+
+					// NetworkPolicyPeer describes a peer to allow traffic to.
+					// Exactly one of its fields must be specified.
+					if peer.PodSelector != nil {
+						dstSelector, err = newSelectorSpec(peer.PodSelector, nil, ns.name, ipset.HashIP)
+						if err != nil {
+							return nil, nil, nil, nil, err
+						}
+						addIfNotExist(dstSelector, podSelectors)
+						dstRuleHost = dstSelector
+
+					} else if peer.NamespaceSelector != nil {
+						dstSelector, err = newSelectorSpec(peer.NamespaceSelector, nil, "", ipset.ListSet)
+						if err != nil {
+							return nil, nil, nil, nil, err
+						}
+						nsSelectors[dstSelector.key] = dstSelector
+						dstRuleHost = dstSelector
+					} else if peer.IPBlock != nil {
+						ipBlock := newIPBlockSpec(peer.IPBlock, ns.name)
+						ipBlocks[ipBlock.key] = ipBlock
+						dstRuleHost = ipBlock
+					}
+
+					if allPorts {
+						rule := newRuleSpec(policyTypeEgress, nil, targetSelector, dstRuleHost, nil)
+						rules[rule.key] = rule
+					} else {
+						withNormalisedProtoAndPort(egressRule.Ports, func(proto, port string) {
+							rule := newRuleSpec(policyTypeEgress, &proto, targetSelector, dstRuleHost, &port)
+							rules[rule.key] = rule
+						})
+					}
+				}
+			}
+		}
+	}
+
+	return rules, nsSelectors, podSelectors, ipBlocks, nil
 }

 func addIfNotExist(s *selectorSpec, ss map[string]*selectorSpec) {
@@ -179,12 +164,6 @@ func addIfNotExist(s *selectorSpec, ss map[string]*selectorSpec) {
 	}
 }

-func withNormalisedProtoAndPortLegacy(npps []extnapi.NetworkPolicyPort, f func(proto, port string)) {
-	for _, npp := range npps {
-		f(proto(npp.Protocol), port(npp.Port))
-	}
-}
-
 func withNormalisedProtoAndPort(npps []networkingv1.NetworkPolicyPort, f func(proto, port string)) {
 	for _, npp := range npps {
 		f(proto(npp.Protocol), port(npp.Port))
@@ -7,6 +7,12 @@ const (
 	DefaultChain = "WEAVE-NPC-DEFAULT"
 	IngressChain = "WEAVE-NPC-INGRESS"

+	EgressChain        = "WEAVE-NPC-EGRESS"
+	EgressDefaultChain = "WEAVE-NPC-EGRESS-DEFAULT"
+	EgressCustomChain  = "WEAVE-NPC-EGRESS-CUSTOM"
+	EgressMarkChain    = "WEAVE-NPC-EGRESS-ACCEPT"
+	EgressMark         = "0x40000/0x40000"
+
 	IpsetNamePrefix = "weave-"

 	LocalIpset = IpsetNamePrefix + "local-pods"
@@ -9,7 +9,7 @@ import (
 	networkingv1 "k8s.io/api/networking/v1"

 	"github.com/weaveworks/weave/common"
-	"github.com/weaveworks/weave/npc/ipset"
+	"github.com/weaveworks/weave/net/ipset"
 	"github.com/weaveworks/weave/npc/iptables"
 )

@@ -37,19 +37,16 @@ type controller struct {

 	nss         map[string]*ns // ns name -> ns struct
 	nsSelectors *selectorSet   // selector string -> nsSelector
-
-	legacy bool // use legacy network policy semantics (k8s pre-1.7)
 }

-func New(nodeName string, legacy bool, ipt iptables.Interface, ips ipset.Interface) NetworkPolicyController {
+func New(nodeName string, ipt iptables.Interface, ips ipset.Interface) NetworkPolicyController {
 	c := &controller{
 		nodeName: nodeName,
-		legacy:   legacy,
 		ipt:      ipt,
 		ips:      ips,
 		nss:      make(map[string]*ns)}

-	doNothing := func(*selector) error { return nil }
+	doNothing := func(*selector, policyType) error { return nil }
 	c.nsSelectors = newSelectorSet(ips, c.onNewNsSelector, doNothing, doNothing)

 	return c
@@ -71,7 +68,7 @@ func (npc *controller) onNewNsSelector(selector *selector) error {
 func (npc *controller) withNS(name string, f func(ns *ns) error) error {
 	ns, found := npc.nss[name]
 	if !found {
-		newNs, err := newNS(name, npc.nodeName, npc.legacy, npc.ipt, npc.ips, npc.nsSelectors)
+		newNs, err := newNS(name, npc.nodeName, npc.ipt, npc.ips, npc.nsSelectors)
 		if err != nil {
 			return err
 		}
@@ -1,12 +1,14 @@
 package npc

 import (
+	"fmt"
 	"log"
+	"strings"
 	"testing"

 	"github.com/pkg/errors"
 	"github.com/stretchr/testify/require"
-	"github.com/weaveworks/weave/npc/ipset"
+	"github.com/weaveworks/weave/net/ipset"
 	coreapi "k8s.io/api/core/v1"
 	networkingv1 "k8s.io/api/networking/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -103,18 +105,46 @@ func (i *mockIPSet) List(prefix string) ([]ipset.Name, error) {
 }

 type mockIPTables struct {
+	rules map[string]map[string]struct{} // chain -> rulespec -> struct{}
+}
+
+func newMockIPTables() *mockIPTables {
+	return &mockIPTables{rules: make(map[string]map[string]struct{})}
 }

 func (ipt *mockIPTables) Append(table, chain string, rulespec ...string) error {
+	if table != TableFilter {
+		return fmt.Errorf("invalid table: %q", table)
+	}
+
+	if _, found := ipt.rules[chain]; !found {
+		ipt.rules[chain] = make(map[string]struct{})
+	}
+
+	rule := strings.Join(rulespec, " ")
+	if _, found := ipt.rules[chain][rule]; found {
+		return fmt.Errorf("rule already exists. chain: %q, rule: %q", chain, rule)
+	}
+
+	ipt.rules[chain][rule] = struct{}{}
+
 	return nil
 }

 func (ipt *mockIPTables) Delete(table, chain string, rulespec ...string) error {
+	rule := strings.Join(rulespec, " ")
+
+	if _, found := ipt.rules[chain][rule]; !found {
+		return fmt.Errorf("rule does not exist. chain: %q rule: %q", chain, rule)
+	}
+
+	delete(ipt.rules[chain], rule)
+
 	return nil
 }

 func (ipt *mockIPTables) Insert(table, chain string, pos int, rulespec ...string) error {
-	return nil
+	return errors.New("Not Implemented")
 }

 func TestRegressionPolicyNamespaceOrdering3059(t *testing.T) {
@@ -144,6 +174,7 @@ func TestRegressionPolicyNamespaceOrdering3059(t *testing.T) {
 			Namespace: "destination",
 		},
 		Spec: networkingv1.NetworkPolicySpec{
+			PolicyTypes: []networkingv1.PolicyType{networkingv1.PolicyTypeIngress},
 			Ingress: []networkingv1.NetworkPolicyIngressRule{
 				{
 					From: []networkingv1.NetworkPolicyPeer{
@@ -167,7 +198,7 @@ func TestRegressionPolicyNamespaceOrdering3059(t *testing.T) {

 	// Namespaces first
 	m := newMockIPSet()
-	controller := New("foo", false, &mockIPTables{}, &m)
+	controller := New("foo", newMockIPTables(), &m)

 	const (
 		selectorIPSetName = "weave-I239Zp%sCvoVt*D6u=A!2]YEk"
@@ -183,7 +214,7 @@ func TestRegressionPolicyNamespaceOrdering3059(t *testing.T) {

 	// NetworkPolicy first
 	m = newMockIPSet()
-	controller = New("foo", false, &mockIPTables{}, &m)
+	controller = New("foo", newMockIPTables(), &m)

 	controller.AddNetworkPolicy(networkPolicy)

@@ -193,17 +224,18 @@ func TestRegressionPolicyNamespaceOrdering3059(t *testing.T) {
 	require.Equal(t, true, len(m.sets[selectorIPSetName].subSets[sourceIPSetName]) > 0)
 }

-// Tests default-allow ipset behavior when running in non-legacy mode.
+// Tests default-allow ipset behavior
 func TestDefaultAllow(t *testing.T) {
 	const (
-		defaultAllowIPSetName = "weave-E.1.0W^NGSp]0_t5WwH/]gX@L"
-		fooPodIP              = "10.32.0.10"
-		barPodIP              = "10.32.0.11"
-		barPodNewIP           = "10.32.0.12"
+		ingressDefaultAllowIPSetName = "weave-;rGqyMIl1HN^cfDki~Z$3]6!N"
+		egressDefaultAllowIPSetName  = "weave-s_+ChJId4Uy_$}G;WdH|~TK)I"
+		fooPodIP                     = "10.32.0.10"
+		barPodIP                     = "10.32.0.11"
+		barPodNewIP                  = "10.32.0.12"
 	)

 	m := newMockIPSet()
-	controller := New("bar", false, &mockIPTables{}, &m)
+	controller := New("bar", newMockIPTables(), &m)

 	defaultNamespace := &coreapi.Namespace{
 		ObjectMeta: metav1.ObjectMeta{
@@ -213,7 +245,8 @@ func TestDefaultAllow(t *testing.T) {
 	controller.AddNamespace(defaultNamespace)

 	// Should create an ipset for default-allow
-	require.Contains(t, m.sets, defaultAllowIPSetName)
+	require.Contains(t, m.sets, ingressDefaultAllowIPSetName)
+	require.Contains(t, m.sets, egressDefaultAllowIPSetName)

 	podFoo := &coreapi.Pod{
 		ObjectMeta: metav1.ObjectMeta{
@@ -225,7 +258,8 @@ func TestDefaultAllow(t *testing.T) {
 	controller.AddPod(podFoo)

 	// Should add the foo pod to default-allow
-	require.True(t, m.entryExists(defaultAllowIPSetName, fooPodIP))
+	require.True(t, m.entryExists(ingressDefaultAllowIPSetName, fooPodIP))
+	require.True(t, m.entryExists(egressDefaultAllowIPSetName, fooPodIP))

 	podBar := &coreapi.Pod{
 		ObjectMeta: metav1.ObjectMeta{
@@ -236,10 +270,12 @@ func TestDefaultAllow(t *testing.T) {
 		Status: coreapi.PodStatus{PodIP: barPodIP}}
 	podBarNoIP := &coreapi.Pod{ObjectMeta: podBar.ObjectMeta}
 	controller.AddPod(podBarNoIP)
+
 	controller.UpdatePod(podBarNoIP, podBar)

 	// Should add the bar pod to default-allow
-	require.True(t, m.entryExists(defaultAllowIPSetName, barPodIP))
+	require.True(t, m.entryExists(ingressDefaultAllowIPSetName, barPodIP))
+	require.True(t, m.entryExists(egressDefaultAllowIPSetName, barPodIP))

 	// Allow access from the bar pod to the foo pod
 	netpol := &networkingv1.NetworkPolicy{
@@ -248,6 +284,10 @@ func TestDefaultAllow(t *testing.T) {
 			Namespace: "default",
 		},
 		Spec: networkingv1.NetworkPolicySpec{
+			PolicyTypes: []networkingv1.PolicyType{
+				networkingv1.PolicyTypeIngress,
+				networkingv1.PolicyTypeEgress,
+			},
 			PodSelector: metav1.LabelSelector{MatchLabels: map[string]string{"run": "foo"}},
 			Ingress: []networkingv1.NetworkPolicyIngressRule{{
 				From: []networkingv1.NetworkPolicyPeer{{
@@ -256,60 +296,74 @@ func TestDefaultAllow(t *testing.T) {
 					},
 				}},
 			}},
+			Egress: []networkingv1.NetworkPolicyEgressRule{{
+				To: []networkingv1.NetworkPolicyPeer{{
+					IPBlock: &networkingv1.IPBlock{CIDR: "192.168.48.0/24"},
+				}},
+			}},
 		},
 	}
 	controller.AddNetworkPolicy(netpol)

 	// Should remove the foo pod from default-allow as the netpol selects it
-	require.False(t, m.entryExists(defaultAllowIPSetName, fooPodIP))
-	require.True(t, m.entryExists(defaultAllowIPSetName, barPodIP))
+	require.False(t, m.entryExists(ingressDefaultAllowIPSetName, fooPodIP))
+	require.False(t, m.entryExists(egressDefaultAllowIPSetName, fooPodIP))
+	require.True(t, m.entryExists(ingressDefaultAllowIPSetName, barPodIP))
+	require.True(t, m.entryExists(egressDefaultAllowIPSetName, barPodIP))

 	podBarWithNewIP := *podBar
 	podBarWithNewIP.Status.PodIP = barPodNewIP
 	controller.UpdatePod(podBar, &podBarWithNewIP)

 	// Should update IP addr of the bar pod in default-allow
-	require.False(t, m.entryExists(defaultAllowIPSetName, barPodIP))
-	require.True(t, m.entryExists(defaultAllowIPSetName, barPodNewIP))
+	require.False(t, m.entryExists(ingressDefaultAllowIPSetName, barPodIP))
+	require.False(t, m.entryExists(egressDefaultAllowIPSetName, barPodIP))
+	require.True(t, m.entryExists(ingressDefaultAllowIPSetName, barPodNewIP))
+	require.True(t, m.entryExists(egressDefaultAllowIPSetName, barPodNewIP))

 	controller.UpdatePod(&podBarWithNewIP, podBarNoIP)
 	// Should remove the bar pod from default-allow as it does not have any IP addr
-	require.False(t, m.entryExists(defaultAllowIPSetName, barPodNewIP))
+	require.False(t, m.entryExists(ingressDefaultAllowIPSetName, barPodNewIP))
+	require.False(t, m.entryExists(egressDefaultAllowIPSetName, barPodNewIP))

 	podFooWithNewLabel := *podFoo
 	podFooWithNewLabel.ObjectMeta.Labels = map[string]string{"run": "new-foo"}
 	controller.UpdatePod(podFoo, &podFooWithNewLabel)

 	// Should bring back the foo pod to default-allow as it does not match dst of any netpol
-	require.True(t, m.entryExists(defaultAllowIPSetName, fooPodIP))
+	require.True(t, m.entryExists(ingressDefaultAllowIPSetName, fooPodIP))
+	require.True(t, m.entryExists(egressDefaultAllowIPSetName, fooPodIP))

 	controller.UpdatePod(&podFooWithNewLabel, podFoo)
 	// Should remove from default-allow as it matches the netpol after the update
-	require.False(t, m.entryExists(defaultAllowIPSetName, fooPodIP))
+	require.False(t, m.entryExists(ingressDefaultAllowIPSetName, fooPodIP))
+	require.False(t, m.entryExists(egressDefaultAllowIPSetName, fooPodIP))

 	controller.DeleteNetworkPolicy(netpol)
 	// Should bring back the foo pod to default-allow as no netpol selects it
-	require.True(t, m.entryExists(defaultAllowIPSetName, fooPodIP))
+	require.True(t, m.entryExists(ingressDefaultAllowIPSetName, fooPodIP))
+	require.True(t, m.entryExists(egressDefaultAllowIPSetName, fooPodIP))

 	controller.DeletePod(podFoo)
 	// Should remove foo pod from default-allow
-	require.False(t, m.entryExists(defaultAllowIPSetName, fooPodIP))
+	require.False(t, m.entryExists(ingressDefaultAllowIPSetName, fooPodIP))
+	require.False(t, m.entryExists(egressDefaultAllowIPSetName, fooPodIP))

 	controller.DeleteNamespace(defaultNamespace)
 	// Should remove default ipset
-	require.NotContains(t, m.sets, defaultAllowIPSetName)
-
+	require.NotContains(t, m.sets, ingressDefaultAllowIPSetName)
+	require.NotContains(t, m.sets, egressDefaultAllowIPSetName)
 }

 func TestOutOfOrderPodEvents(t *testing.T) {
 	const (
-		defaultAllowIPSetName = "weave-E.1.0W^NGSp]0_t5WwH/]gX@L"
-		runBarIPSetName       = "weave-bZ~x=yBgzH)Ht()K*Uv3z{M]Y"
-		podIP                 = "10.32.0.10"
+		ingressDefaultAllowIPSetName = "weave-;rGqyMIl1HN^cfDki~Z$3]6!N"
+		runBarIPSetName              = "weave-bZ~x=yBgzH)Ht()K*Uv3z{M]Y"
+		podIP                        = "10.32.0.10"
 	)

 	m := newMockIPSet()
-	controller := New("qux", false, &mockIPTables{}, &m)
+	controller := New("qux", newMockIPTables(), &m)

 	defaultNamespace := &coreapi.Namespace{
 		ObjectMeta: metav1.ObjectMeta{
@@ -328,7 +382,7 @@ func TestOutOfOrderPodEvents(t *testing.T) {
 	controller.AddPod(podFoo)

 	// Should be in default-allow as no netpol selects podFoo
-	require.True(t, m.entryExists(defaultAllowIPSetName, podIP))
+	require.True(t, m.entryExists(ingressDefaultAllowIPSetName, podIP))

 	netpol := &networkingv1.NetworkPolicy{
 		ObjectMeta: metav1.ObjectMeta{
@@ -336,6 +390,7 @@ func TestOutOfOrderPodEvents(t *testing.T) {
 			Namespace: "default",
 		},
 		Spec: networkingv1.NetworkPolicySpec{
+			PolicyTypes: []networkingv1.PolicyType{networkingv1.PolicyTypeIngress},
 			PodSelector: metav1.LabelSelector{MatchLabels: map[string]string{"run": "foo"}},
 			Ingress: []networkingv1.NetworkPolicyIngressRule{{
 				From: []networkingv1.NetworkPolicyPeer{{
@@ -349,7 +404,7 @@ func TestOutOfOrderPodEvents(t *testing.T) {
 	controller.AddNetworkPolicy(netpol)

 	// Shouldn't be in default-allow as netpol above selects podFoo
-	require.False(t, m.entryExists(defaultAllowIPSetName, podIP))
+	require.False(t, m.entryExists(ingressDefaultAllowIPSetName, podIP))

 	podBar := &coreapi.Pod{
 		ObjectMeta: metav1.ObjectMeta{
@@ -361,8 +416,8 @@ func TestOutOfOrderPodEvents(t *testing.T) {
 	controller.AddPod(podBar)

 	// Should be in default-allow as no netpol selects podBar
-	require.True(t, m.entryExists(defaultAllowIPSetName, podIP))
-	require.True(t, m.Exist(podBar.ObjectMeta.UID, defaultAllowIPSetName, podIP))
+	require.True(t, m.entryExists(ingressDefaultAllowIPSetName, podIP))
+	require.True(t, m.Exist(podBar.ObjectMeta.UID, ingressDefaultAllowIPSetName, podIP))
 	// Should be in run=bar ipset
 	require.True(t, m.entryExists(runBarIPSetName, podIP))

@@ -373,24 +428,24 @@ func TestOutOfOrderPodEvents(t *testing.T) {

 	// Should be in default-allow as no netpol selects podBar and podFoo removal
 	// should not affect podBar in default-allow
-	require.True(t, m.entryExists(defaultAllowIPSetName, podIP))
+	require.True(t, m.entryExists(ingressDefaultAllowIPSetName, podIP))

 	controller.DeletePod(podBar)

 	// Should remove from default-allow and run=bar ipsets
-	require.Equal(t, 0, len(m.sets[defaultAllowIPSetName].subSets))
+	require.Equal(t, 0, len(m.sets[ingressDefaultAllowIPSetName].subSets))
 	require.False(t, m.entryExists(runBarIPSetName, podIP))
 }

 // Test case for https://github.com/weaveworks/weave/issues/3222
-func TestNewDstSelector(t *testing.T) {
+func TestNewTargetSelector(t *testing.T) {
 	const (
-		defaultAllowIPSetName = "weave-E.1.0W^NGSp]0_t5WwH/]gX@L"
-		podIP                 = "10.32.0.10"
+		ingressDefaultAllowIPSetName = "weave-;rGqyMIl1HN^cfDki~Z$3]6!N"
+		podIP                        = "10.32.0.10"
 	)

 	m := newMockIPSet()
-	controller := New("baz", false, &mockIPTables{}, &m)
+	controller := New("baz", newMockIPTables(), &m)

 	defaultNamespace := &coreapi.Namespace{
 		ObjectMeta: metav1.ObjectMeta{
@@ -408,7 +463,7 @@ func TestNewDstSelector(t *testing.T) {
 		Status: coreapi.PodStatus{PodIP: podIP}}
 	controller.AddPod(podFoo)

-	require.True(t, m.entryExists(defaultAllowIPSetName, podIP))
+	require.True(t, m.entryExists(ingressDefaultAllowIPSetName, podIP))

 	netpolBar := &networkingv1.NetworkPolicy{
 		ObjectMeta: metav1.ObjectMeta{
@@ -417,6 +472,7 @@ func TestNewDstSelector(t *testing.T) {
 			Namespace: "default",
 		},
 		Spec: networkingv1.NetworkPolicySpec{
+			PolicyTypes: []networkingv1.PolicyType{networkingv1.PolicyTypeIngress},
 			PodSelector: metav1.LabelSelector{},
 			Ingress: []networkingv1.NetworkPolicyIngressRule{{
 				From: []networkingv1.NetworkPolicyPeer{{
@@ -427,8 +483,8 @@ func TestNewDstSelector(t *testing.T) {
 	}
 	controller.AddNetworkPolicy(netpolBar)

-	// netpolBar dst selector selects podFoo
-	require.False(t, m.entryExists(defaultAllowIPSetName, podIP))
+	// netpolBar target selector selects podFoo
+	require.False(t, m.entryExists(ingressDefaultAllowIPSetName, podIP))

 	netpolFoo := &networkingv1.NetworkPolicy{
 		ObjectMeta: metav1.ObjectMeta{
@@ -437,6 +493,7 @@ func TestNewDstSelector(t *testing.T) {
 			Namespace: "default",
 		},
 		Spec: networkingv1.NetworkPolicySpec{
+			PolicyTypes: []networkingv1.PolicyType{networkingv1.PolicyTypeIngress},
 			PodSelector: metav1.LabelSelector{},
 			Ingress: []networkingv1.NetworkPolicyIngressRule{{
 				From: []networkingv1.NetworkPolicyPeer{{
@@ -448,9 +505,90 @@ func TestNewDstSelector(t *testing.T) {
 	controller.AddNetworkPolicy(netpolFoo)

 	controller.DeleteNetworkPolicy(netpolBar)
-	// netpolFoo dst-selects podFoo
-	require.False(t, m.entryExists(defaultAllowIPSetName, podIP))
+	// netpolFoo target-selects podFoo
+	require.False(t, m.entryExists(ingressDefaultAllowIPSetName, podIP))
 	controller.DeleteNetworkPolicy(netpolFoo)
-	// No netpol dst-selects podFoo
-	require.True(t, m.entryExists(defaultAllowIPSetName, podIP))
+	// No netpol target-selects podFoo
+	require.True(t, m.entryExists(ingressDefaultAllowIPSetName, podIP))
+}
+
+func TestEgressPolicyWithIPBlock(t *testing.T) {
+	const (
+		fooPodIP                    = "10.32.0.10"
+		exceptIPSetName             = "weave-j:W$5om!$8JS})buYAD7q^#sX"
+		exceptIPSetNameInNonDefault = "weave-|*P{aL2C@#N/1IZ!IvQItv_pt"
+	)
+
+	m := newMockIPSet()
+	ipt := newMockIPTables()
+	controller := New("foo", ipt, &m)
+
+	netpolFoo := &networkingv1.NetworkPolicy{
+		ObjectMeta: metav1.ObjectMeta{
+			UID:       "netpol-foo",
+			Name:      "allow-from-bar-to-foo",
+			Namespace: "default",
+		},
+		Spec: networkingv1.NetworkPolicySpec{
+			PolicyTypes: []networkingv1.PolicyType{
+				networkingv1.PolicyTypeEgress,
+			},
+			PodSelector: metav1.LabelSelector{MatchLabels: map[string]string{"run": "bar"}},
+			Egress: []networkingv1.NetworkPolicyEgressRule{{
+				To: []networkingv1.NetworkPolicyPeer{{
+					IPBlock: &networkingv1.IPBlock{
+						CIDR: "192.168.48.0/24",
+						Except: []string{
+							"192.168.48.1/32",
+							"192.168.48.2/32",
+						},
+					},
+				}},
+			}},
+		},
+	}
+	err := controller.AddNetworkPolicy(netpolFoo)
+	require.NoError(t, err)
+
+	require.Equal(t, 2, len(m.sets[exceptIPSetName].subSets))
+	require.True(t, m.entryExists(exceptIPSetName, "192.168.48.1/32"))
+	require.True(t, m.entryExists(exceptIPSetName, "192.168.48.2/32"))
+
+	// Each egress rule is represented as two iptables rules (-J MARK and -J RETURN).
+	require.Equal(t, 2, len(ipt.rules[EgressCustomChain]))
+	for rule := range ipt.rules[EgressCustomChain] {
+		require.Contains(t, rule, "-d 192.168.48.0/24 -m set ! --match-set "+exceptIPSetName+" dst")
+	}
+
+	// Check that we create a new ipset for the ipBlock bellow. An ipset with the
+	// same content already exists (created by netpolFoo), but we need to create
+	// a new one, as netpolBar is in a different namespace and weave-npc does
+	// object refcounting only within namespace boundaries.
+	netpolBar := &networkingv1.NetworkPolicy{
+		ObjectMeta: metav1.ObjectMeta{
+			UID:       "netpol-foo-bar",
+			Name:      "allow-from-bar-to-foo-in-non-default",
+			Namespace: "non-default",
+		},
+		Spec: networkingv1.NetworkPolicySpec{
+			PolicyTypes: []networkingv1.PolicyType{
+				networkingv1.PolicyTypeEgress,
+			},
+			PodSelector: metav1.LabelSelector{MatchLabels: map[string]string{"run": "bar"}},
+			Egress: []networkingv1.NetworkPolicyEgressRule{{
+				To: []networkingv1.NetworkPolicyPeer{{
+					IPBlock: &networkingv1.IPBlock{
+						CIDR: "192.168.48.0/24",
+						Except: []string{
+							"192.168.48.1/32",
+							"192.168.48.2/32",
+						},
+					},
+				}},
+			}},
+		},
+	}
+	err = controller.AddNetworkPolicy(netpolBar)
+	require.NoError(t, err)
+	require.Equal(t, 2, len(m.sets[exceptIPSetNameInNonDefault].subSets))
 }
@@ -0,0 +1,116 @@
+package npc
+
+import (
+	"fmt"
+	"sort"
+	"strings"
+
+	networkingv1 "k8s.io/api/networking/v1"
+	"k8s.io/apimachinery/pkg/types"
+
+	"github.com/weaveworks/weave/common"
+	"github.com/weaveworks/weave/net/ipset"
+)
+
+type ipBlockSpec struct {
+	key       string
+	ipsetName ipset.Name // ipset for storing excepted CIDRs
+	ipBlock   *networkingv1.IPBlock
+	nsName    string // Namespace name
+}
+
+func newIPBlockSpec(ipb *networkingv1.IPBlock, nsName string) *ipBlockSpec {
+	spec := &ipBlockSpec{ipBlock: ipb, nsName: nsName}
+
+	if len(ipb.Except) > 0 {
+		sort.Strings(ipb.Except)
+		spec.key = strings.Join(ipb.Except, " ")
+		spec.ipsetName = ipset.Name(IpsetNamePrefix + shortName(nsName+":"+"ipblock-except:"+spec.key))
+	}
+
+	return spec
+}
+
+func (spec *ipBlockSpec) getRuleSpec(src bool) ([]string, string) {
+	dir, dirOpt := "dst", "-d"
+	if src {
+		dir, dirOpt = "src", "-s"
+	}
+
+	if spec.key == "" {
+		rule := []string{dirOpt, spec.ipBlock.CIDR}
+		comment := fmt.Sprintf("cidr: %s", spec.ipBlock.CIDR)
+		return rule, comment
+	}
+
+	rule := []string{dirOpt, spec.ipBlock.CIDR,
+		"-m", "set", "!", "--match-set", string(spec.ipsetName), dir}
+	comment := fmt.Sprintf("cidr: %s except [%s]", spec.ipBlock.CIDR, spec.key)
+	return rule, comment
+}
+
+type ipBlockSet struct {
+	ips   ipset.Interface
+	users map[string]map[types.UID]struct{}
+}
+
+func newIPBlockSet(ips ipset.Interface) *ipBlockSet {
+	return &ipBlockSet{
+		ips:   ips,
+		users: make(map[string]map[types.UID]struct{}),
+	}
+}
+
+func (s *ipBlockSet) deprovision(user types.UID, current, desired map[string]*ipBlockSpec) error {
+	for key, spec := range current {
+		if key == "" {
+			continue
+		}
+
+		if _, found := desired[key]; !found {
+			delete(s.users[key], user)
+			if len(s.users[key]) == 0 {
+				common.Log.Infof("destroying ipset: %#v", spec)
+				if err := s.ips.Destroy(spec.ipsetName); err != nil {
+					return err
+				}
+
+				delete(s.users, key)
+			}
+		}
+	}
+
+	return nil
+}
+
+func (s *ipBlockSet) provision(user types.UID, current, desired map[string]*ipBlockSpec) (err error) {
+	for key, spec := range desired {
+		if key == "" {
+			// No need to provision an ipBlock with empty list of excepted CIDRs
+			// (i.e. no ipset is needed for the related iptables rule).
+			continue
+		}
+
+		if _, found := current[key]; !found {
+			if _, found := s.users[key]; !found {
+				common.Log.Infof("creating ipset: %#v", spec)
+				if err := s.ips.Create(spec.ipsetName, ipset.HashNet); err != nil {
+					return err
+				}
+
+				// TODO(brb) Pass comment to ips.Create instead.
+				comment := "excepted from " + spec.ipBlock.CIDR
+				for _, cidr := range spec.ipBlock.Except {
+					if err = s.ips.AddEntry(user, spec.ipsetName, cidr, comment); err != nil {
+						return err
+					}
+				}
+
+				s.users[key] = make(map[types.UID]struct{})
+			}
+			s.users[key][user] = struct{}{}
+		}
+	}
+
+	return nil
+}
@@ -1,7 +1,6 @@
 package npc

 import (
-	"encoding/json"
 	"errors"
 	"fmt"

@@ -13,7 +12,7 @@ import (
 	"k8s.io/apimachinery/pkg/util/uuid"

 	"github.com/weaveworks/weave/common"
-	"github.com/weaveworks/weave/npc/ipset"
+	"github.com/weaveworks/weave/net/ipset"
 	"github.com/weaveworks/weave/npc/iptables"
 )

@@ -32,20 +31,20 @@ type ns struct {
 	uid     types.UID     // surrogate UID to own allPods selector
 	allPods *selectorSpec // hash:ip ipset of all pod IPs in this namespace

-	// stores IP addrs of pods which are not selected by any dst podSelector of
-	// any netpol; used only in non-legacy mode and is used as a dst in
-	// the WEAVE-NPC-DEFAULT iptables chain.
-	defaultAllowIPSet ipset.Name
+	// stores IP addrs of pods which are not selected by any target podSelector of
+	// any netpol; used as a target in the WEAVE-NPC-{INGRESS,EGRESS}-DEFAULT
+	// iptables chains.
+	ingressDefaultAllowIPSet ipset.Name
+	egressDefaultAllowIPSet  ipset.Name

 	nsSelectors  *selectorSet
 	podSelectors *selectorSet
+	ipBlocks     *ipBlockSet
 	rules        *ruleSet
-
-	legacy bool
 }

-func newNS(name, nodeName string, legacy bool, ipt iptables.Interface, ips ipset.Interface, nsSelectors *selectorSet) (*ns, error) {
-	allPods, err := newSelectorSpec(&metav1.LabelSelector{}, false, name, ipset.HashIP)
+func newNS(name, nodeName string, ipt iptables.Interface, ips ipset.Interface, nsSelectors *selectorSet) (*ns, error) {
+	allPods, err := newSelectorSpec(&metav1.LabelSelector{}, nil, name, ipset.HashIP)
 	if err != nil {
 		return nil, err
 	}
@@ -60,19 +59,24 @@ func newNS(name, nodeName string, legacy bool, ipt iptables.Interface, ips ipset
 		uid:         uuid.NewUUID(),
 		allPods:     allPods,
 		nsSelectors: nsSelectors,
+		ipBlocks:    newIPBlockSet(ips),
 		rules:       newRuleSet(ipt),
-		legacy:      legacy}
-
-	ns.podSelectors = newSelectorSet(ips, ns.onNewPodSelector, ns.onNewDstPodSelector, ns.onDestroyDstPodSelector)
-
-	if !legacy {
-		defaultAllowIPSet := ipset.Name(IpsetNamePrefix + shortName("default-allow:"+name))
-		if err := ips.Create(defaultAllowIPSet, ipset.HashIP); err != nil {
-			return nil, err
-		}
-		ns.defaultAllowIPSet = defaultAllowIPSet
 	}

+	ns.podSelectors = newSelectorSet(ips, ns.onNewPodSelector, ns.onNewTargetPodSelector, ns.onDestroyTargetPodSelector)
+
+	ingressDefaultAllowIPSet := ipset.Name(IpsetNamePrefix + shortName("ingress-default-allow:"+name))
+	if err := ips.Create(ingressDefaultAllowIPSet, ipset.HashIP); err != nil {
+		return nil, err
+	}
+	ns.ingressDefaultAllowIPSet = ingressDefaultAllowIPSet
+
+	egressDefaultAllowIPSet := ipset.Name(IpsetNamePrefix + shortName("egress-default-allow:"+name))
+	if err := ips.Create(egressDefaultAllowIPSet, ipset.HashIP); err != nil {
+		return nil, err
+	}
+	ns.egressDefaultAllowIPSet = egressDefaultAllowIPSet
+
 	if err := ns.podSelectors.provision(ns.uid, nil, map[string]*selectorSpec{ns.allPods.key: ns.allPods}); err != nil {
 		return nil, err
 	}
@@ -102,16 +106,13 @@ func (ns *ns) onNewPodSelector(selector *selector) error {
 	return nil
 }

-func (ns *ns) onNewDstPodSelector(selector *selector) error {
-	if ns.legacy {
-		return nil
-	}
-
+func (ns *ns) onNewTargetPodSelector(selector *selector, policyType policyType) error {
 	for _, pod := range ns.pods {
 		if hasIP(pod) {
 			// Remove the pod from default-allow if dst podselector matches the pod
+			ipset := ns.defaultAllowIPSetName(policyType)
 			if selector.matches(pod.ObjectMeta.Labels) {
-				if err := ns.ips.DelEntry(pod.ObjectMeta.UID, ns.defaultAllowIPSet, pod.Status.PodIP); err != nil {
+				if err := ns.ips.DelEntry(pod.ObjectMeta.UID, ipset, pod.Status.PodIP); err != nil {
 					return err
 				}
 			}
@@ -121,15 +122,11 @@ func (ns *ns) onNewDstPodSelector(selector *selector) error {
 	return nil
 }

-func (ns *ns) onDestroyDstPodSelector(selector *selector) error {
-	if ns.legacy {
-		return nil
-	}
-
+func (ns *ns) onDestroyTargetPodSelector(selector *selector, policyType policyType) error {
 	for _, pod := range ns.pods {
 		if hasIP(pod) {
 			if selector.matches(pod.ObjectMeta.Labels) {
-				if err := ns.addToDefaultAllowIfNoMatching(pod); err != nil {
+				if err := ns.addToDefaultAllowIfNoMatching(pod, policyType); err != nil {
 					return err
 				}
 			}
@@ -139,18 +136,19 @@ func (ns *ns) onDestroyDstPodSelector(selector *selector) error {
 	return nil
 }

-// Add pod IP addr to default-allow ipset if there are no matching dst selectors
-func (ns *ns) addToDefaultAllowIfNoMatching(pod *coreapi.Pod) error {
+// Add pod IP addr to default-allow ipset if there are no matching target selectors
+func (ns *ns) addToDefaultAllowIfNoMatching(pod *coreapi.Pod, policyType policyType) error {
 	found := false
 	// TODO(mp) optimize (avoid iterating over selectors) by ref counting IP addrs.
 	for _, s := range ns.podSelectors.entries {
-		if ns.podSelectors.dstSelectorExist(s) && s.matches(pod.ObjectMeta.Labels) {
+		if ns.podSelectors.targetSelectorExist(s, policyType) && s.matches(pod.ObjectMeta.Labels) {
 			found = true
 			break
 		}
 	}
 	if !found {
-		if err := ns.ips.AddEntry(pod.ObjectMeta.UID, ns.defaultAllowIPSet, pod.Status.PodIP, podComment(pod)); err != nil {
+		ipset := ns.defaultAllowIPSetName(policyType)
+		if err := ns.ips.AddEntry(pod.ObjectMeta.UID, ipset, pod.Status.PodIP, podComment(pod)); err != nil {
 			return err
 		}
 	}
@@ -175,13 +173,18 @@ func (ns *ns) addPod(obj *coreapi.Pod) error {
 		ns.ips.AddEntry(obj.ObjectMeta.UID, LocalIpset, obj.Status.PodIP, podComment(obj))
 	}

-	found, err := ns.podSelectors.addToMatching(obj.ObjectMeta.UID, obj.ObjectMeta.Labels, obj.Status.PodIP, podComment(obj))
+	foundIngress, foundEgress, err := ns.podSelectors.addToMatching(obj.ObjectMeta.UID, obj.ObjectMeta.Labels, obj.Status.PodIP, podComment(obj))
 	if err != nil {
 		return err
 	}
-	// If there are no matching dst selectors, add the pod to default-allow
-	if !ns.legacy && !found {
-		if err := ns.ips.AddEntry(obj.ObjectMeta.UID, ns.defaultAllowIPSet, obj.Status.PodIP, podComment(obj)); err != nil {
+	// If there are no matching target selectors, add the pod to default-allow
+	if !foundIngress {
+		if err := ns.ips.AddEntry(obj.ObjectMeta.UID, ns.ingressDefaultAllowIPSet, obj.Status.PodIP, podComment(obj)); err != nil {
+			return err
+		}
+	}
+	if !foundEgress {
+		if err := ns.ips.AddEntry(obj.ObjectMeta.UID, ns.egressDefaultAllowIPSet, obj.Status.PodIP, podComment(obj)); err != nil {
 			return err
 		}
 	}
@@ -202,10 +205,11 @@ func (ns *ns) updatePod(oldObj, newObj *coreapi.Pod) error {
 			ns.ips.DelEntry(oldObj.ObjectMeta.UID, LocalIpset, oldObj.Status.PodIP)
 		}

-		if !ns.legacy {
-			if err := ns.ips.DelEntry(oldObj.ObjectMeta.UID, ns.defaultAllowIPSet, oldObj.Status.PodIP); err != nil {
-				return err
-			}
+		if err := ns.ips.DelEntry(oldObj.ObjectMeta.UID, ns.ingressDefaultAllowIPSet, oldObj.Status.PodIP); err != nil {
+			return err
+		}
+		if err := ns.ips.DelEntry(oldObj.ObjectMeta.UID, ns.egressDefaultAllowIPSet, oldObj.Status.PodIP); err != nil {
+			return err
 		}

 		return ns.podSelectors.delFromMatching(oldObj.ObjectMeta.UID, oldObj.ObjectMeta.Labels, oldObj.Status.PodIP)
@@ -215,13 +219,18 @@ func (ns *ns) updatePod(oldObj, newObj *coreapi.Pod) error {
 		if ns.checkLocalPod(newObj) {
 			ns.ips.AddEntry(newObj.ObjectMeta.UID, LocalIpset, newObj.Status.PodIP, podComment(newObj))
 		}
-		found, err := ns.podSelectors.addToMatching(newObj.ObjectMeta.UID, newObj.ObjectMeta.Labels, newObj.Status.PodIP, podComment(newObj))
+		foundIngress, foundEgress, err := ns.podSelectors.addToMatching(newObj.ObjectMeta.UID, newObj.ObjectMeta.Labels, newObj.Status.PodIP, podComment(newObj))
 		if err != nil {
 			return err
 		}

-		if !ns.legacy && !found {
-			if err := ns.ips.AddEntry(newObj.ObjectMeta.UID, ns.defaultAllowIPSet, newObj.Status.PodIP, podComment(newObj)); err != nil {
+		if !foundIngress {
+			if err := ns.ips.AddEntry(newObj.ObjectMeta.UID, ns.ingressDefaultAllowIPSet, newObj.Status.PodIP, podComment(newObj)); err != nil {
+				return err
+			}
+		}
+		if !foundEgress {
+			if err := ns.ips.AddEntry(newObj.ObjectMeta.UID, ns.egressDefaultAllowIPSet, newObj.Status.PodIP, podComment(newObj)); err != nil {
 				return err
 			}
 		}
@@ -229,17 +238,11 @@ func (ns *ns) updatePod(oldObj, newObj *coreapi.Pod) error {
 		return nil
 	}

-	if !ns.legacy &&
-		oldObj.Status.PodIP != newObj.Status.PodIP &&
-		ns.ips.Exist(oldObj.ObjectMeta.UID, ns.defaultAllowIPSet, oldObj.Status.PodIP) {
-		// Instead of iterating over all selectors we check whether old pod IP
-		// has been inserted into default-allow ipset to decide whether the IP
-		// in the ipset has to be updated.
-
-		if err := ns.ips.DelEntry(oldObj.ObjectMeta.UID, ns.defaultAllowIPSet, oldObj.Status.PodIP); err != nil {
+	if oldObj.Status.PodIP != newObj.Status.PodIP {
+		if err := ns.updateDefaultAllowIPSetEntry(oldObj, newObj, ns.ingressDefaultAllowIPSet); err != nil {
 			return err
 		}
-		if err := ns.ips.AddEntry(newObj.ObjectMeta.UID, ns.defaultAllowIPSet, newObj.Status.PodIP, podComment(newObj)); err != nil {
+		if err := ns.updateDefaultAllowIPSetEntry(oldObj, newObj, ns.egressDefaultAllowIPSet); err != nil {
 			return err
 		}
 	}
@@ -264,17 +267,11 @@ func (ns *ns) updatePod(oldObj, newObj *coreapi.Pod) error {
 				}
 			}

-			if !ns.legacy && ns.podSelectors.dstSelectorExist(ps) {
-				switch {
-				case !oldMatch && newMatch:
-					if err := ns.ips.DelEntry(oldObj.ObjectMeta.UID, ns.defaultAllowIPSet, oldObj.Status.PodIP); err != nil {
-						return err
-					}
-				case oldMatch && !newMatch:
-					if err := ns.addToDefaultAllowIfNoMatching(newObj); err != nil {
-						return err
-					}
-				}
+			if err := ns.addOrRemoveToDefaultAllowIPSet(ps, oldObj, newObj, oldMatch, newMatch, policyTypeIngress); err != nil {
+				return err
+			}
+			if err := ns.addOrRemoveToDefaultAllowIPSet(ps, oldObj, newObj, oldMatch, newMatch, policyTypeEgress); err != nil {
+				return err
 			}
 		}
 	}
@@ -282,6 +279,23 @@ func (ns *ns) updatePod(oldObj, newObj *coreapi.Pod) error {
 	return nil
 }

+func (ns *ns) addOrRemoveToDefaultAllowIPSet(ps *selector, oldObj, newObj *coreapi.Pod, oldMatch, newMatch bool, policyType policyType) error {
+	ipset := ns.defaultAllowIPSetName(policyType)
+	if ns.podSelectors.targetSelectorExist(ps, policyType) {
+		switch {
+		case !oldMatch && newMatch:
+			if err := ns.ips.DelEntry(oldObj.ObjectMeta.UID, ipset, oldObj.Status.PodIP); err != nil {
+				return err
+			}
+		case oldMatch && !newMatch:
+			if err := ns.addToDefaultAllowIfNoMatching(newObj, policyType); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
 func (ns *ns) deletePod(obj *coreapi.Pod) error {
 	delete(ns.pods, obj.ObjectMeta.UID)

@@ -293,10 +307,11 @@ func (ns *ns) deletePod(obj *coreapi.Pod) error {
 		ns.ips.DelEntry(obj.ObjectMeta.UID, LocalIpset, obj.Status.PodIP)
 	}

-	if !ns.legacy {
-		if err := ns.ips.DelEntry(obj.ObjectMeta.UID, ns.defaultAllowIPSet, obj.Status.PodIP); err != nil {
-			return err
-		}
+	if err := ns.ips.DelEntry(obj.ObjectMeta.UID, ns.ingressDefaultAllowIPSet, obj.Status.PodIP); err != nil {
+		return err
+	}
+	if err := ns.ips.DelEntry(obj.ObjectMeta.UID, ns.egressDefaultAllowIPSet, obj.Status.PodIP); err != nil {
+		return err
 	}

 	return ns.podSelectors.delFromMatching(obj.ObjectMeta.UID, obj.ObjectMeta.Labels, obj.Status.PodIP)
@@ -305,7 +320,7 @@ func (ns *ns) deletePod(obj *coreapi.Pod) error {
 func (ns *ns) addNetworkPolicy(obj interface{}) error {
 	// Analyse policy, determine which rules and ipsets are required

-	uid, rules, nsSelectors, podSelectors, err := ns.analyse(obj)
+	uid, rules, nsSelectors, podSelectors, ipBlocks, err := ns.analyse(obj)
 	if err != nil {
 		return err
 	}
@@ -317,16 +332,19 @@ func (ns *ns) addNetworkPolicy(obj interface{}) error {
 	if err := ns.podSelectors.provision(uid, nil, podSelectors); err != nil {
 		return err
 	}
+	if err := ns.ipBlocks.provision(uid, nil, ipBlocks); err != nil {
+		return err
+	}
 	return ns.rules.provision(uid, nil, rules)
 }

 func (ns *ns) updateNetworkPolicy(oldObj, newObj interface{}) error {
 	// Analyse the old and the new policy so we can determine differences
-	oldUID, oldRules, oldNsSelectors, oldPodSelectors, err := ns.analyse(oldObj)
+	oldUID, oldRules, oldNsSelectors, oldPodSelectors, oldIPBlocks, err := ns.analyse(oldObj)
 	if err != nil {
 		return err
 	}
-	newUID, newRules, newNsSelectors, newPodSelectors, err := ns.analyse(newObj)
+	newUID, newRules, newNsSelectors, newPodSelectors, newIPBlocks, err := ns.analyse(newObj)
 	if err != nil {
 		return err
 	}
@@ -344,18 +362,24 @@ func (ns *ns) updateNetworkPolicy(oldObj, newObj interface{}) error {
 	if err := ns.podSelectors.deprovision(oldUID, oldPodSelectors, newPodSelectors); err != nil {
 		return err
 	}
+	if err := ns.ipBlocks.deprovision(oldUID, oldIPBlocks, newIPBlocks); err != nil {
+		return err
+	}
 	if err := ns.nsSelectors.provision(oldUID, oldNsSelectors, newNsSelectors); err != nil {
 		return err
 	}
 	if err := ns.podSelectors.provision(oldUID, oldPodSelectors, newPodSelectors); err != nil {
 		return err
 	}
+	if err := ns.ipBlocks.provision(oldUID, oldIPBlocks, newIPBlocks); err != nil {
+		return err
+	}
 	return ns.rules.provision(oldUID, oldRules, newRules)
 }

 func (ns *ns) deleteNetworkPolicy(obj interface{}) error {
 	// Analyse network policy to free resources
-	uid, rules, nsSelectors, podSelectors, err := ns.analyse(obj)
+	uid, rules, nsSelectors, podSelectors, ipBlocks, err := ns.analyse(obj)
 	if err != nil {
 		return err
 	}
@@ -369,73 +393,89 @@ func (ns *ns) deleteNetworkPolicy(obj interface{}) error {
 	if err := ns.nsSelectors.deprovision(uid, nsSelectors, nil); err != nil {
 		return err
 	}
-	return ns.podSelectors.deprovision(uid, podSelectors, nil)
-}
-
-func bypassRule(nsIpsetName ipset.Name, namespace string) []string {
-	return []string{"-m", "set", "--match-set", string(nsIpsetName), "dst", "-j", "ACCEPT", "-m", "comment", "--comment", "DefaultAllow isolation for namespace: " + namespace}
-}
-
-func (ns *ns) ensureBypassRule() error {
-	var ipset ipset.Name
-	if ns.legacy {
-		ipset = ns.allPods.ipsetName
-	} else {
-		ipset = ns.defaultAllowIPSet
+	if err := ns.podSelectors.deprovision(uid, podSelectors, nil); err != nil {
+		return err
+	}
+	if err := ns.ipBlocks.deprovision(uid, ipBlocks, nil); err != nil {
+		return err
 	}

-	common.Log.Debugf("ensuring rule for DefaultAllow in namespace: %s, set %s", ns.name, ipset)
-	return ns.ipt.Append(TableFilter, DefaultChain, bypassRule(ipset, ns.name)...)
+	return nil
 }

-func (ns *ns) deleteBypassRule() error {
-	var ipset ipset.Name
-	if ns.legacy {
-		ipset = ns.allPods.ipsetName
-	} else {
-		ipset = ns.defaultAllowIPSet
+func (ns *ns) updateDefaultAllowIPSetEntry(oldObj, newObj *coreapi.Pod, ipsetName ipset.Name) error {
+	// Instead of iterating over all selectors we check whether old pod IP
+	// has been inserted into default-allow ipset to decide whether the IP
+	// in the ipset has to be updated.
+	if ns.ips.Exist(oldObj.ObjectMeta.UID, ipsetName, oldObj.Status.PodIP) {
+
+		if err := ns.ips.DelEntry(oldObj.ObjectMeta.UID, ipsetName, oldObj.Status.PodIP); err != nil {
+			return err
+		}
+		if err := ns.ips.AddEntry(newObj.ObjectMeta.UID, ipsetName, newObj.Status.PodIP, podComment(newObj)); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func bypassRules(namespace string, ingress, egress ipset.Name) map[string][][]string {
+	return map[string][][]string{
+		DefaultChain: {
+			{"-m", "set", "--match-set", string(ingress), "dst", "-j", "ACCEPT",
+				"-m", "comment", "--comment", "DefaultAllow ingress isolation for namespace: " + namespace},
+		},
+		EgressDefaultChain: {
+			{"-m", "set", "--match-set", string(egress), "src", "-j", EgressMarkChain,
+				"-m", "comment", "--comment", "DefaultAllow egress isolation for namespace: " + namespace},
+			{"-m", "set", "--match-set", string(egress), "src", "-j", "RETURN",
+				"-m", "comment", "--comment", "DefaultAllow egress isolation for namespace: " + namespace},
+		},
+	}
+}
+
+func (ns *ns) ensureBypassRules() error {
+	for chain, rules := range bypassRules(ns.name, ns.ingressDefaultAllowIPSet, ns.egressDefaultAllowIPSet) {
+		for _, rule := range rules {
+			common.Log.Debugf("adding rule for DefaultAllow in namespace: %s, chain: %s, %s", ns.name, chain, rule)
+			if err := ns.ipt.Append(TableFilter, chain, rule...); err != nil {
+				return err
+			}
+		}
 	}

-	common.Log.Debugf("removing default rule in namespace: %s, set %s", ns.name, ipset)
-	return ns.ipt.Delete(TableFilter, DefaultChain, bypassRule(ipset, ns.name)...)
+	return nil
+}
+
+func (ns *ns) deleteBypassRules() error {
+	for chain, rules := range bypassRules(ns.name, ns.ingressDefaultAllowIPSet, ns.egressDefaultAllowIPSet) {
+		for _, rule := range rules {
+			common.Log.Debugf("removing rule for DefaultAllow in namespace: %s, chain: %s, %s", ns.name, chain, rule)
+			if err := ns.ipt.Delete(TableFilter, chain, rule...); err != nil {
+				return err
+			}
+		}
+	}
+
+	return nil
 }

 func (ns *ns) addNamespace(obj *coreapi.Namespace) error {
 	ns.namespace = obj

-	// Insert a rule to bypass policies if namespace is DefaultAllow
-	if !ns.isDefaultDeny(obj) {
-		if err := ns.ensureBypassRule(); err != nil {
-			return err
-		}
+	// Insert a rule to bypass policies
+	if err := ns.ensureBypassRules(); err != nil {
+		return err
 	}

 	// Add namespace ipset to matching namespace selectors
-	_, err := ns.nsSelectors.addToMatching(obj.ObjectMeta.UID, obj.ObjectMeta.Labels, string(ns.allPods.ipsetName), namespaceComment(ns))
+	_, _, err := ns.nsSelectors.addToMatching(obj.ObjectMeta.UID, obj.ObjectMeta.Labels, string(ns.allPods.ipsetName), namespaceComment(ns))
 	return err
 }

 func (ns *ns) updateNamespace(oldObj, newObj *coreapi.Namespace) error {
 	ns.namespace = newObj

-	// Update bypass rule if ingress default has changed
-	oldDefaultDeny := ns.isDefaultDeny(oldObj)
-	newDefaultDeny := ns.isDefaultDeny(newObj)
-
-	if oldDefaultDeny != newDefaultDeny {
-		common.Log.Infof("namespace DefaultDeny changed from %t to %t", oldDefaultDeny, newDefaultDeny)
-		if oldDefaultDeny {
-			if err := ns.ensureBypassRule(); err != nil {
-				return err
-			}
-		}
-		if newDefaultDeny {
-			if err := ns.deleteBypassRule(); err != nil {
-				return err
-			}
-		}
-	}
-
 	// Re-evaluate namespace selector membership if labels have changed
 	if !equals(oldObj.ObjectMeta.Labels, newObj.ObjectMeta.Labels) {
 		for _, selector := range ns.nsSelectors.entries {
@@ -464,10 +504,8 @@ func (ns *ns) deleteNamespace(obj *coreapi.Namespace) error {
 	ns.namespace = nil

 	// Remove bypass rule
-	if !ns.isDefaultDeny(obj) {
-		if err := ns.deleteBypassRule(); err != nil {
-			return err
-		}
+	if err := ns.deleteBypassRules(); err != nil {
+		return err
 	}

 	// Remove namespace ipset from any matching namespace selectors
@@ -476,36 +514,16 @@ func (ns *ns) deleteNamespace(obj *coreapi.Namespace) error {
 		return err
 	}

-	if !ns.legacy {
-		return ns.ips.Destroy(ns.defaultAllowIPSet)
+	if err := ns.ips.Destroy(ns.ingressDefaultAllowIPSet); err != nil {
+		return err
+	}
+	if err := ns.ips.Destroy(ns.egressDefaultAllowIPSet); err != nil {
+		return err
 	}

 	return nil
 }

-func (ns *ns) isDefaultDeny(namespace *coreapi.Namespace) bool {
-	nnpJSON, found := namespace.ObjectMeta.Annotations["net.beta.kubernetes.io/network-policy"]
-	if !found {
-		return false
-	}
-
-	if !ns.legacy {
-		common.Log.Warn("DefaultDeny annotation is supported only in legacy mode (--use-legacy-netpol)")
-		return false
-	}
-
-	var nnp NamespaceNetworkPolicy
-	if err := json.Unmarshal([]byte(nnpJSON), &nnp); err != nil {
-		common.Log.Warn("Ignoring network policy annotation: unmarshal failed:", err)
-		// If we can't understand the annotation, behave as if it isn't present
-		return false
-	}
-
-	return nnp.Ingress != nil &&
-		nnp.Ingress.Isolation != nil &&
-		*(nnp.Ingress.Isolation) == DefaultDeny
-}
-
 func hasIP(pod *coreapi.Pod) bool {
 	// Ensure pod isn't dead, has an IP address and isn't sharing the host network namespace
 	return pod.Status.Phase != "Succeeded" && pod.Status.Phase != "Failed" &&
@@ -532,10 +550,19 @@ func podComment(pod *coreapi.Pod) string {
 	return fmt.Sprintf("namespace: %s, pod: %s", pod.ObjectMeta.Namespace, pod.ObjectMeta.Name)
 }

+func (ns *ns) defaultAllowIPSetName(pt policyType) ipset.Name {
+	ipset := ns.ingressDefaultAllowIPSet
+	if pt == policyTypeEgress {
+		ipset = ns.egressDefaultAllowIPSet
+	}
+	return ipset
+}
+
 func (ns *ns) analyse(obj interface{}) (
 	uid types.UID,
 	rules map[string]*ruleSpec,
 	nsSelectors, podSelectors map[string]*selectorSpec,
+	ipBlocks map[string]*ipBlockSpec,
 	err error) {

 	switch p := obj.(type) {
@@ -550,16 +577,9 @@ func (ns *ns) analyse(obj interface{}) (
 	ns.policies[uid] = obj

 	// Analyse policy, determine which rules and ipsets are required
-	if ns.legacy {
-		rules, nsSelectors, podSelectors, err = ns.analysePolicyLegacy(obj.(*extnapi.NetworkPolicy))
-		if err != nil {
-			return
-		}
-	} else {
-		rules, nsSelectors, podSelectors, err = ns.analysePolicy(obj.(*networkingv1.NetworkPolicy))
-		if err != nil {
-			return
-		}
+	rules, nsSelectors, podSelectors, ipBlocks, err = ns.analysePolicy(obj.(*networkingv1.NetworkPolicy))
+	if err != nil {
+		return
 	}

 	return
@@ -2,6 +2,7 @@ package npc

 import (
 	"fmt"
+	"reflect"
 	"strings"

 	"k8s.io/apimachinery/pkg/types"
@@ -10,38 +11,71 @@ import (
 	"github.com/weaveworks/weave/npc/iptables"
 )

-type ruleSpec struct {
-	key  string
-	args []string
+type ruleHost interface {
+	// getRuleSpec returns source or destination specification and comment which
+	// are used in an iptables rule.
+	//
+	// If src=true then the rulespec is for source, otherwise - for destination.
+	getRuleSpec(src bool) ([]string, string)
 }

-func newRuleSpec(proto *string, srcHost *selectorSpec, dstHost *selectorSpec, dstPort *string) *ruleSpec {
+type ruleSpec struct {
+	key        string
+	args       []string
+	policyType policyType
+}
+
+func newRuleSpec(policyType policyType, proto *string, srcHost, dstHost ruleHost, dstPort *string) *ruleSpec {
 	args := []string{}
 	if proto != nil {
 		args = append(args, "-p", *proto)
 	}
 	srcComment := "anywhere"
-	if srcHost != nil {
-		args = append(args, "-m", "set", "--match-set", string(srcHost.ipsetName), "src")
-		if srcHost.nsName != "" {
-			srcComment = fmt.Sprintf("pods: namespace: %s, selector: %s", srcHost.nsName, srcHost.key)
-		} else {
-			srcComment = fmt.Sprintf("namespaces: selector: %s", srcHost.key)
-		}
+	if srcHost != nil && !reflect.ValueOf(srcHost).IsNil() {
+		rule, comment := srcHost.getRuleSpec(true)
+		args = append(args, rule...)
+		srcComment = comment
 	}
 	dstComment := "anywhere"
-	if dstHost != nil {
-		args = append(args, "-m", "set", "--match-set", string(dstHost.ipsetName), "dst")
-		dstComment = fmt.Sprintf("pods: namespace: %s, selector: %s", dstHost.nsName, dstHost.key)
+	if dstHost != nil && !reflect.ValueOf(dstHost).IsNil() {
+		rule, comment := dstHost.getRuleSpec(false)
+		args = append(args, rule...)
+		dstComment = comment
 	}
 	if dstPort != nil {
 		args = append(args, "--dport", *dstPort)
 	}
-	args = append(args, "-j", "ACCEPT")
-	args = append(args, "-m", "comment", "--comment", fmt.Sprintf("%s -> %s", srcComment, dstComment))
+	// NOTE: if you remove the comment bellow, then embed `policyType` into `key`.
+	// Otherwise, the rule won't be provisioned if it exists for other policy type.
+	args = append(args, "-m", "comment", "--comment", fmt.Sprintf("%s -> %s (%s)", srcComment, dstComment, policyTypeStr(policyType)))
 	key := strings.Join(args, " ")

-	return &ruleSpec{key, args}
+	return &ruleSpec{key, args, policyType}
+}
+
+func (spec *ruleSpec) iptChain() string {
+	if spec.policyType == policyTypeEgress {
+		return EgressCustomChain
+	}
+	return IngressChain
+}
+
+func (spec *ruleSpec) iptRuleSpecs() [][]string {
+	if spec.policyType == policyTypeIngress {
+		rule := make([]string, len(spec.args))
+		copy(rule, spec.args)
+		rule = append(rule, "-j", "ACCEPT")
+		return [][]string{rule}
+	}
+
+	// policyTypeEgress
+	ruleMark := make([]string, len(spec.args))
+	copy(ruleMark, spec.args)
+	ruleMark = append(ruleMark, "-j", EgressMarkChain)
+	ruleReturn := make([]string, len(spec.args))
+	copy(ruleReturn, spec.args)
+	ruleReturn = append(ruleReturn, "-j", "RETURN")
+	return [][]string{ruleMark, ruleReturn}
 }

 type ruleSet struct {
@@ -58,10 +92,14 @@ func (rs *ruleSet) deprovision(user types.UID, current, desired map[string]*rule
 		if _, found := desired[key]; !found {
 			delete(rs.users[key], user)
 			if len(rs.users[key]) == 0 {
-				common.Log.Infof("deleting rule: %v", spec.args)
-				if err := rs.ipt.Delete(TableFilter, IngressChain, spec.args...); err != nil {
-					return err
+				chain := spec.iptChain()
+				for _, rule := range spec.iptRuleSpecs() {
+					common.Log.Infof("deleting rule %v from %q chain", rule, chain)
+					if err := rs.ipt.Delete(TableFilter, chain, rule...); err != nil {
+						return err
+					}
 				}
+
 				delete(rs.users, key)
 			}
 		}
@@ -74,9 +112,12 @@ func (rs *ruleSet) provision(user types.UID, current, desired map[string]*ruleSp
 	for key, spec := range desired {
 		if _, found := current[key]; !found {
 			if _, found := rs.users[key]; !found {
-				common.Log.Infof("adding rule: %v", spec.args)
-				if err := rs.ipt.Append(TableFilter, IngressChain, spec.args...); err != nil {
-					return err
+				chain := spec.iptChain()
+				for _, rule := range spec.iptRuleSpecs() {
+					common.Log.Infof("adding rule %v to %q chain", rule, chain)
+					if err := rs.ipt.Append(TableFilter, chain, rule...); err != nil {
+						return err
+					}
 				}
 				rs.users[key] = make(map[types.UID]struct{})
 			}
@@ -9,7 +9,7 @@ func TestRegressionHandleNil3095(t *testing.T) {
 	// Test for handling nil values
 	// https://github.com/weaveworks/weave/issues/3095

-	rs := newRuleSpec(nil, nil, nil, nil)
+	rs := newRuleSpec(policyTypeIngress, nil, nil, nil, nil)

 	require.NotEqual(t, rs.key, "")

@@ -1,34 +1,36 @@
 package npc

 import (
+	"fmt"
+
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/labels"
 	"k8s.io/apimachinery/pkg/types"

 	"github.com/weaveworks/weave/common"
-	"github.com/weaveworks/weave/npc/ipset"
+	"github.com/weaveworks/weave/net/ipset"
 )

 type selectorSpec struct {
-	key      string          // string representation (for hash keying/equality comparison)
-	selector labels.Selector // k8s Selector object (for matching)
-	dst      bool            // destination selector
+	key         string          // string representation (for hash keying/equality comparison)
+	selector    labels.Selector // k8s Selector object (for matching)
+	policyTypes []policyType    // If non-empty, then selectorSpec is a target selector for given policyTypes.

 	ipsetType ipset.Type // type of ipset to provision
 	ipsetName ipset.Name // generated ipset name
 	nsName    string     // Namespace name
 }

-func newSelectorSpec(json *metav1.LabelSelector, dst bool, nsName string, ipsetType ipset.Type) (*selectorSpec, error) {
+func newSelectorSpec(json *metav1.LabelSelector, policyType []policyType, nsName string, ipsetType ipset.Type) (*selectorSpec, error) {
 	selector, err := metav1.LabelSelectorAsSelector(json)
 	if err != nil {
 		return nil, err
 	}
 	key := selector.String()
 	return &selectorSpec{
-		key:      key,
-		selector: selector,
-		dst:      dst,
+		key:         key,
+		selector:    selector,
+		policyTypes: policyType,
 		// We prefix the selector string with the namespace name when generating
 		// the shortname because you can specify the same selector in multiple
 		// namespaces - we need those to map to distinct ipsets
@@ -37,6 +39,23 @@ func newSelectorSpec(json *metav1.LabelSelector, dst bool, nsName string, ipsetT
 		nsName:    nsName}, nil
 }

+func (spec *selectorSpec) getRuleSpec(src bool) ([]string, string) {
+	dir := "dst"
+	if src {
+		dir = "src"
+	}
+	rule := []string{"-m", "set", "--match-set", string(spec.ipsetName), dir}
+
+	comment := "anywhere"
+	if spec.nsName != "" {
+		comment = fmt.Sprintf("pods: namespace: %s, selector: %s", spec.nsName, spec.key)
+	} else {
+		comment = fmt.Sprintf("namespaces: selector: %s", spec.key)
+	}
+
+	return rule, comment
+}
+
 type selector struct {
 	ips  ipset.Interface
 	spec *selectorSpec
@@ -55,49 +74,54 @@ func (s *selector) delEntry(user types.UID, entry string) error {
 }

 type selectorFn func(selector *selector) error
+type selectorWithPolicyTypeFn func(selector *selector, policyType policyType) error

 type selectorSet struct {
 	ips           ipset.Interface
 	onNewSelector selectorFn

-	// invoked after dst selector has been provisioned for the first time
-	onNewDstSelector selectorFn
-	// invoked after the last instance of dst selector has been deprovisioned
-	onDestroyDstSelector selectorFn
+	// invoked after target selector has been provisioned for the first time
+	onNewTargetSelector selectorWithPolicyTypeFn
+	// invoked after the last instance of target selector has been deprovisioned
+	onDestroyTargetSelector selectorWithPolicyTypeFn

 	users   map[string]map[types.UID]struct{} // list of users per selector
 	entries map[string]*selector

-	// We need to keep track of dst selector instances to be able to invoke
-	// onNewDstSelector and onDestroyDstSelector callbacks at the right time;
-	// selectorSpec.Key -> count
-	dstSelectorsCount map[string]int
+	// We need to keep track of target selector instances to be able to invoke
+	// onNewTargetSelector and onDestroyTargetSelector callbacks at the right time;
+	// selectorSpec.Key -> policyType -> count
+	targetSelectorsCount map[string]map[policyType]int
 }

-func newSelectorSet(ips ipset.Interface, onNewSelector, onNewDstSelector selectorFn, onDestroyDstSelector selectorFn) *selectorSet {
+func newSelectorSet(ips ipset.Interface, onNewSelector selectorFn, onNewTargetSelector, onDestroyTargetSelector selectorWithPolicyTypeFn) *selectorSet {
 	return &selectorSet{
-		ips:                  ips,
-		onNewSelector:        onNewSelector,
-		onNewDstSelector:     onNewDstSelector,
-		onDestroyDstSelector: onDestroyDstSelector,
+		ips:                     ips,
+		onNewSelector:           onNewSelector,
+		onNewTargetSelector:     onNewTargetSelector,
+		onDestroyTargetSelector: onDestroyTargetSelector,
 		users:                make(map[string]map[types.UID]struct{}),
 		entries:              make(map[string]*selector),
-		dstSelectorsCount:    make(map[string]int)}
+		targetSelectorsCount: make(map[string]map[policyType]int)}
 }

-func (ss *selectorSet) addToMatching(user types.UID, labelMap map[string]string, entry string, comment string) (bool, error) {
-	found := false
+func (ss *selectorSet) addToMatching(user types.UID, labelMap map[string]string, entry string, comment string) (bool, bool, error) {
+	foundIngress := false
+	foundEgress := false
 	for _, s := range ss.entries {
 		if s.matches(labelMap) {
-			if ss.dstSelectorExist(s) {
-				found = true
+			if ss.targetSelectorExist(s, policyTypeIngress) {
+				foundIngress = true
+			}
+			if ss.targetSelectorExist(s, policyTypeEgress) {
+				foundEgress = true
 			}
 			if err := s.addEntry(user, entry, comment); err != nil {
-				return found, err
+				return foundIngress, foundEgress, err
 			}
 		}
 	}
-	return found, nil
+	return foundIngress, foundEgress, nil
 }

 func (ss *selectorSet) delFromMatching(user types.UID, labelMap map[string]string, entry string) error {
@@ -111,8 +135,8 @@ func (ss *selectorSet) delFromMatching(user types.UID, labelMap map[string]strin
 	return nil
 }

-func (ss *selectorSet) dstSelectorExist(s *selector) bool {
-	return ss.dstSelectorsCount[s.spec.key] > 0
+func (ss *selectorSet) targetSelectorExist(s *selector, policyType policyType) bool {
+	return ss.targetSelectorsCount[s.spec.key][policyType] > 0
 }

 func (ss *selectorSet) deprovision(user types.UID, current, desired map[string]*selectorSpec) error {
@@ -129,13 +153,14 @@ func (ss *selectorSet) deprovision(user types.UID, current, desired map[string]*
 				delete(ss.users, key)
 			}

-			if spec.dst {
-				ss.dstSelectorsCount[key]--
-				if ss.dstSelectorsCount[key] == 0 {
-					if err := ss.onDestroyDstSelector(&selector{ss.ips, spec}); err != nil {
+			for _, policyType := range spec.policyTypes {
+				ss.targetSelectorsCount[key][policyType]--
+				if ss.targetSelectorsCount[key][policyType] == 0 {
+					if err := ss.onDestroyTargetSelector(&selector{ss.ips, spec}, policyType); err != nil {
 						return err
 					}
 				}
+				// TODO(brb) delete(...)
 			}
 		}
 	}
@@ -160,10 +185,13 @@ func (ss *selectorSet) provision(user types.UID, current, desired map[string]*se
 			}
 			ss.users[key][user] = struct{}{}

-			if spec.dst {
-				ss.dstSelectorsCount[key]++
-				if ss.dstSelectorsCount[key] == 1 {
-					if err := ss.onNewDstSelector(selector); err != nil {
+			for _, pt := range spec.policyTypes {
+				if _, found := ss.targetSelectorsCount[key]; !found {
+					ss.targetSelectorsCount[key] = make(map[policyType]int)
+				}
+				ss.targetSelectorsCount[key][pt]++
+				if ss.targetSelectorsCount[key][pt] == 1 {
+					if err := ss.onNewTargetSelector(selector, pt); err != nil {
 						return err
 					}
 				}
@@ -0,0 +1,15 @@
+package npc
+
+type policyType byte
+
+const (
+	policyTypeIngress policyType = iota
+	policyTypeEgress
+)
+
+func policyTypeStr(policyType policyType) string {
+	if policyType == policyTypeEgress {
+		return "egress"
+	}
+	return "ingress"
+}
@@ -110,6 +110,10 @@ func (i *Ipam) ReleaseAddress(poolID string, address net.IP) error {
 	return i.weave.ReleaseIPsFor(address.String())
 }

+func (i *Ipam) IsBuiltIn() bool {
+	return false
+}
+
 // Functions required by ipamapi "contract" but not actually used.

 func (i *Ipam) DiscoverNew(discoverapi.DiscoveryType, interface{}) error {
@@ -117,6 +117,16 @@ func (c *CNIPlugin) CmdAdd(args *skel.CmdArgs) error {
 	}
 	defer ns.Close()

+	hostNs, err := netns.Get()
+	if err != nil {
+		return fmt.Errorf("error accessing host network namespace: %s", err)
+	}
+	defer hostNs.Close()
+
+	if ns.Equal(hostNs) {
+		return fmt.Errorf("can not specify host network namespace as network namespace to which container should be added")
+	}
+
 	id := args.ContainerID
 	if len(id) < 5 {
 		data := make([]byte, 5)
@@ -130,7 +140,7 @@ func (c *CNIPlugin) CmdAdd(args *skel.CmdArgs) error {
 	if err := weavenet.AttachContainer(args.Netns, id, args.IfName, conf.BrName, conf.MTU, false, []*net.IPNet{&ip.Address}, false, conf.HairpinMode); err != nil {
 		return err
 	}
-	if err := weavenet.WithNetNSLinkUnsafe(ns, args.IfName, func(link netlink.Link) error {
+	if err := weavenet.WithNetNSLink(ns, args.IfName, func(link netlink.Link) error {
 		return setupRoutes(link, args.IfName, ip.Address, ip.Gateway, result.Routes)
 	}); err != nil {
 		return fmt.Errorf("error setting up routes: %s", err)
@@ -177,7 +187,13 @@ func (c *CNIPlugin) CmdDel(args *skel.CmdArgs) error {

 	// As of CNI 0.3 spec, runtimes can send blank if they just want the address deallocated
 	if args.Netns != "" {
-		if _, err = weavenet.WithNetNS(args.Netns, "del-iface", args.IfName); err != nil {
+		if err = weavenet.WithNetNSByPath(args.Netns, func() error {
+			link, err := netlink.LinkByName(args.IfName)
+			if err != nil {
+				return err
+			}
+			return netlink.LinkDel(link)
+		}); err != nil {
 			// We log the error and carry on instead of returning nil, as there may still be resources to free in IPAM.
 			logOnStderr(fmt.Errorf("error removing interface %q: %s", args.IfName, err))
 		}
@@ -49,7 +49,9 @@ func (w *watcher) ContainerStarted(id string) {
 				rootDir = "/host"
 			}
 			netNSPath := weavenet.NSPathByPidWithRoot(rootDir, info.State.Pid)
-			if _, err := weavenet.WithNetNS(netNSPath, "configure-arp", weavenet.VethName, rootDir); err != nil {
+			if err := weavenet.WithNetNSByPath(netNSPath, func() error {
+				return weavenet.ConfigureARP(weavenet.VethName, rootDir)
+			}); err != nil {
 				w.driver.warn("ContainerStarted", "unable to configure interfaces: %s", err)
 			}
 		}
@@ -97,7 +97,7 @@ func checkIamInPeerList(cml *configMapAnnotations, c *kubernetes.Clientset, peer
 // For each of those peers that is no longer listed as a node by
 // Kubernetes, remove it from Weave IPAM
 func reclaimRemovedPeers(weave *weaveapi.Client, cml *configMapAnnotations, nodes []nodeInfo, myPeerName string) error {
-	for {
+	for loopsWhenNothingChanged := 0; loopsWhenNothingChanged < 3; loopsWhenNothingChanged++ {
 		if err := cml.Init(); err != nil {
 			return err
 		}
@@ -119,6 +119,10 @@ func reclaimRemovedPeers(weave *weaveapi.Client, cml *configMapAnnotations, node
 		}
 		// 2. Loop for each X in the first set and not in the second - we wish to remove X from our data structures
 		for _, peer := range peerMap {
+			if peer.PeerName == myPeerName { // Don't remove myself.
+				common.Log.Warnln("[kube-peers] not removing myself", peer)
+				continue
+			}
 			common.Log.Debugln("[kube-peers] Preparing to remove disappeared peer", peer)
 			okToRemove := false
 			// 3. Check if there is an existing annotation with key X
@@ -144,6 +148,7 @@ func reclaimRemovedPeers(weave *weaveapi.Client, cml *configMapAnnotations, node
 				if err != nil {
 					return err
 				}
+				loopsWhenNothingChanged = 0
 				cml.LoopUpdate(func() error {
 					// 7aa.   Remove any annotations Z* that have contents X
 					if err := cml.RemoveAnnotationsWithValue(peer.PeerName); err != nil {
@@ -168,6 +173,7 @@ func reclaimRemovedPeers(weave *weaveapi.Client, cml *configMapAnnotations, node
 		}

 		// 9. Go back to step 1 until there is no difference between the two sets
+		// (or we hit the counter that says we've been round the loop 3 times and nothing happened)
 	}
 	// Question: Should we narrow step 2 by checking against Weave Net IPAM?
 	// i.e. If peer X owns any address space and is marked unreachable, we want to rmpeer X
@@ -176,14 +182,16 @@ func reclaimRemovedPeers(weave *weaveapi.Client, cml *configMapAnnotations, node

 func main() {
 	var (
-		justReclaim bool
-		justCheck   bool
-		peerName    string
-		nodeName    string
-		logLevel    string
+		justReclaim       bool
+		justCheck         bool
+		justSetNodeStatus bool
+		peerName          string
+		nodeName          string
+		logLevel          string
 	)
 	flag.BoolVar(&justReclaim, "reclaim", false, "reclaim IP space from dead peers")
 	flag.BoolVar(&justCheck, "check-peer-new", false, "return success if peer name is not stored in annotation")
+	flag.BoolVar(&justSetNodeStatus, "set-node-status", false, "set NodeNetworkUnavailable to false")
 	flag.StringVar(&peerName, "peer-name", "unknown", "name of this Weave Net peer")
 	flag.StringVar(&nodeName, "node-name", "unknown", "name of this Kubernetes node")
 	flag.StringVar(&logLevel, "log-level", "info", "logging level (debug, info, warning, error)")
@@ -210,6 +218,13 @@ func main() {
 			os.Exit(0)
 		}
 	}
+	if justSetNodeStatus {
+		err := setNodeNetworkUnavailableFalse(c, nodeName)
+		if err != nil {
+			common.Log.Fatalf("[kube-peers] could not set node status: %v", err)
+		}
+		return
+	}
 	peers, err := getKubePeers(c)
 	if err != nil {
 		common.Log.Fatalf("[kube-peers] Could not get peers: %v", err)
@@ -0,0 +1,29 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+
+	"k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/client-go/kubernetes"
+)
+
+// based on k8s.io/kubernetes/pkg/controller/nodeipam/ipam/adapter.go
+func setNodeNetworkUnavailableFalse(c *kubernetes.Clientset, nodeName string) error {
+	condition := v1.NodeCondition{
+		Type:               v1.NodeNetworkUnavailable,
+		Status:             v1.ConditionFalse,
+		Reason:             "WeaveIsUp",
+		Message:            "Weave pod has set this",
+		LastTransitionTime: metav1.Now(),
+		LastHeartbeatTime:  metav1.Now(),
+	}
+	raw, err := json.Marshal(&[]v1.NodeCondition{condition})
+	if err != nil {
+		return err
+	}
+	patch := []byte(fmt.Sprintf(`{"status":{"conditions":%s}}`, raw))
+	_, err = c.CoreV1().Nodes().PatchStatus(nodeName, patch)
+	return err
+}
@@ -1,3 +1,14 @@
 FROM DOCKERHUB_USER/weaveARCH_EXT
-ADD ./launch.sh ./kube-peers /home/weave/
+
+# These labels are pretty static, and can therefore be added early on:
+LABEL maintainer="Weaveworks <help@weave.works>" \
+      org.opencontainers.image.title="weave-kube" \
+      org.opencontainers.image.source="https://github.com/weaveworks/weave" \
+      org.opencontainers.image.vendor="Weaveworks"
+
+ADD ./launch.sh ./kube-utils /home/weave/
 ENTRYPOINT ["/home/weave/launch.sh"]
+
+# This label will change for every build, and should therefore be the last layer of the image:
+ARG revision
+LABEL org.opencontainers.image.revision="${revision}"
@@ -66,6 +66,11 @@ if [ "${EXPECT_NPC}" = "0" ]; then
    WEAVE_NPC_OPTS=""
 fi

+NO_MASQ_LOCAL_OPT=""
+if [ -n "${NO_MASQ_LOCAL}" ]; then
+    NO_MASQ_LOCAL_OPT="--no-masq-local"
+fi
+
 # Kubernetes sets HOSTNAME to the host's hostname
 # when running a pod in host namespace.
 NICKNAME_ARG=""
@@ -80,7 +85,7 @@ router_bridge_opts() {
 }

 if [ -z "$KUBE_PEERS" ]; then
-    if ! KUBE_PEERS=$(/home/weave/kube-peers) || [ -z "$KUBE_PEERS" ]; then
+    if ! KUBE_PEERS=$(/home/weave/kube-utils) || [ -z "$KUBE_PEERS" ]; then
        echo Failed to get peers >&2
        exit 1
    fi
@@ -105,7 +110,7 @@ fi
 if [ -f ${DB_PREFIX}data.db ]; then
    if /usr/bin/weaveutil get-db-flag "$DB_PREFIX" peer-reclaim >/dev/null ; then
        # If this peer name is not stored in the list then we were removed by another peer.
-        if /home/weave/kube-peers -check-peer-new -peer-name="$PEERNAME" -log-level=debug ; then
+        if /home/weave/kube-utils -check-peer-new -peer-name="$PEERNAME" -log-level=debug ; then
            # In order to avoid a CRDT clash, clean up
            echo "Peer not in list; removing persisted data" >&2
            rm -f ${DB_PREFIX}data.db
@@ -139,10 +144,13 @@ post_start_actions() {
    /home/weave/weave --local setup-cni

    # Attempt to run the reclaim process, but don't halt the script if it fails
-    /home/weave/kube-peers -reclaim -node-name="$HOSTNAME" -peer-name="$PEERNAME" -log-level=debug || true
+    /home/weave/kube-utils -reclaim -node-name="$HOSTNAME" -peer-name="$PEERNAME" -log-level=debug || true

    # Expose the weave network so host processes can communicate with pods
    /home/weave/weave --local expose $WEAVE_EXPOSE_IP
+
+    # Mark network as up
+    /home/weave/kube-utils -set-node-status -node-name="$HOSTNAME"
 }

 post_start_actions &
@@ -156,5 +164,6 @@ post_start_actions &
     --ipalloc-init $IPALLOC_INIT \
     --conn-limit=$CONN_LIMIT \
     $WEAVE_NPC_OPTS \
+     $NO_MASQ_LOCAL_OPT \
     "$@" \
     $KUBE_PEERS
@@ -25,14 +25,6 @@ items:
          - get
          - list
          - watch
-      - apiGroups:
-          - extensions
-        resources:
-          - networkpolicies
-        verbs:
-          - get
-          - list
-          - watch
      - apiGroups:
          - 'networking.k8s.io'
        resources:
@@ -41,6 +33,13 @@ items:
          - get
          - list
          - watch
+      - apiGroups:
+        - ''
+        resources:
+        - nodes/status
+        verbs:
+        - patch
+        - update
  - apiVersion: rbac.authorization.k8s.io/v1beta1
    kind: ClusterRoleBinding
    metadata:
@@ -156,7 +155,6 @@ items:
                      fieldPath: spec.nodeName
              image: 'weaveworks/weave-npc:latest'
              imagePullPolicy: Always
-#npc-args
              resources:
                requests:
                  cpu: 10m
@@ -0,0 +1,209 @@
+apiVersion: v1
+kind: List
+items:
+  - apiVersion: v1
+    kind: ServiceAccount
+    metadata:
+      name: weave-net
+      labels:
+        name: weave-net
+      namespace: kube-system
+  - apiVersion: rbac.authorization.k8s.io/v1beta1
+    kind: ClusterRole
+    metadata:
+      name: weave-net
+      labels:
+        name: weave-net
+    rules:
+      - apiGroups:
+          - ''
+        resources:
+          - pods
+          - namespaces
+          - nodes
+        verbs:
+          - get
+          - list
+          - watch
+      - apiGroups:
+          - extensions
+        resources:
+          - networkpolicies
+        verbs:
+          - get
+          - list
+          - watch
+      - apiGroups:
+          - 'networking.k8s.io'
+        resources:
+          - networkpolicies
+        verbs:
+          - get
+          - list
+          - watch
+      - apiGroups:
+        - ''
+        resources:
+        - nodes/status
+        verbs:
+        - patch
+        - update
+  - apiVersion: rbac.authorization.k8s.io/v1beta1
+    kind: ClusterRoleBinding
+    metadata:
+      name: weave-net
+      labels:
+        name: weave-net
+    roleRef:
+      kind: ClusterRole
+      name: weave-net
+      apiGroup: rbac.authorization.k8s.io
+    subjects:
+      - kind: ServiceAccount
+        name: weave-net
+        namespace: kube-system
+  - apiVersion: rbac.authorization.k8s.io/v1beta1
+    kind: Role
+    metadata:
+      name: weave-net
+      namespace: kube-system
+      labels:
+        name: weave-net
+    rules:
+      - apiGroups:
+          - ''
+        resources:
+          - configmaps
+        resourceNames:
+          - weave-net
+        verbs:
+          - get
+          - update
+      - apiGroups:
+          - ''
+        resources:
+          - configmaps
+        verbs:
+          - create
+  - apiVersion: rbac.authorization.k8s.io/v1beta1
+    kind: RoleBinding
+    metadata:
+      name: weave-net
+      namespace: kube-system
+      labels:
+        name: weave-net
+    roleRef:
+      kind: Role
+      name: weave-net
+      apiGroup: rbac.authorization.k8s.io
+    subjects:
+      - kind: ServiceAccount
+        name: weave-net
+        namespace: kube-system
+  - apiVersion: extensions/v1beta1
+    kind: DaemonSet
+    metadata:
+      name: weave-net
+      labels:
+        name: weave-net
+      namespace: kube-system
+    spec:
+      # Wait 5 seconds to let pod connect before rolling next pod
+      minReadySeconds: 5
+      template:
+        metadata:
+          labels:
+            name: weave-net
+        spec:
+          containers:
+            - name: weave
+              command:
+                - /home/weave/launch.sh
+              env:
+                - name: HOSTNAME
+                  valueFrom:
+                    fieldRef:
+                      apiVersion: v1
+                      fieldPath: spec.nodeName
+              image: 'weaveworks/weave-kube:latest'
+              imagePullPolicy: Always
+              livenessProbe:
+                httpGet:
+                  host: 127.0.0.1
+                  path: /status
+                  port: 6784
+                initialDelaySeconds: 30
+              resources:
+                requests:
+                  cpu: 10m
+              securityContext:
+                privileged: true
+              volumeMounts:
+                - name: weavedb
+                  mountPath: /weavedb
+                - name: cni-bin
+                  mountPath: /host/opt
+                - name: cni-bin2
+                  mountPath: /host/home
+                - name: cni-conf
+                  mountPath: /host/etc
+                - name: dbus
+                  mountPath: /host/var/lib/dbus
+                - name: lib-modules
+                  mountPath: /lib/modules
+                - name: xtables-lock
+                  mountPath: /run/xtables.lock
+                  readOnly: false
+            - name: weave-npc
+              env:
+                - name: HOSTNAME
+                  valueFrom:
+                    fieldRef:
+                      apiVersion: v1
+                      fieldPath: spec.nodeName
+              image: 'weaveworks/weave-npc:latest'
+              imagePullPolicy: Always
+#npc-args
+              resources:
+                requests:
+                  cpu: 10m
+              securityContext:
+                privileged: true
+              volumeMounts:
+                - name: xtables-lock
+                  mountPath: /run/xtables.lock
+                  readOnly: false
+          hostNetwork: true
+          hostPID: true
+          restartPolicy: Always
+          securityContext:
+            seLinuxOptions: {}
+          serviceAccountName: weave-net
+          tolerations:
+            - effect: NoSchedule
+              operator: Exists
+          volumes:
+            - name: weavedb
+              hostPath:
+                path: /var/lib/weave
+            - name: cni-bin
+              hostPath:
+                path: /opt
+            - name: cni-bin2
+              hostPath:
+                path: /home
+            - name: cni-conf
+              hostPath:
+                path: /etc
+            - name: dbus
+              hostPath:
+                path: /var/lib/dbus
+            - name: lib-modules
+              hostPath:
+                path: /lib/modules
+            - name: xtables-lock
+              hostPath:
+                path: /run/xtables.lock
+                type: FileOrCreate
+      updateStrategy:
+        type: RollingUpdate
@@ -1,17 +1,24 @@
 FROM ALPINE_BASEIMAGE

-# If we're building for another architecture than amd64, the CROSS_BUILD_ placeholder is removed so e.g. CROSS_BUILD_COPY turns into COPY
-# If we're building normally, for amd64, CROSS_BUILD lines are removed
-CROSS_BUILD_COPY qemu-QEMUARCH-static /usr/bin/
-
-LABEL maintainer "Weaveworks Inc <help@weave.works>"
-LABEL works.weave.role=system \
+# These labels are pretty static, and can therefore be added early on:
+LABEL works.weave.role="system" \
+      maintainer="Weaveworks <help@weave.works>" \
+      org.opencontainers.image.title="Weave Net" \
+      org.opencontainers.image.description="Weave Net creates a virtual network that connects Docker containers across multiple hosts and enables their automatic discovery" \
+      org.opencontainers.image.url="https://weave.works" \
+      org.opencontainers.image.source="https://github.com/weaveworks/weave" \
+      org.opencontainers.image.vendor="Weaveworks" \
+      org.label-schema.schema-version="1.0" \
      org.label-schema.name="Weave Net" \
      org.label-schema.description="Weave Net creates a virtual network that connects Docker containers across multiple hosts and enables their automatic discovery" \
      org.label-schema.url="https://weave.works" \
      org.label-schema.vcs-url="https://github.com/weaveworks/weave" \
      org.label-schema.vendor="Weaveworks"

+# If we're building for another architecture than amd64, the CROSS_BUILD_ placeholder is removed so e.g. CROSS_BUILD_COPY turns into COPY
+# If we're building normally, for amd64, CROSS_BUILD lines are removed
+CROSS_BUILD_COPY qemu-QEMUARCH-static /usr/bin/
+
 RUN apk add --update \
    iptables \
    ipset \
@@ -21,3 +28,8 @@ RUN apk add --update \
 COPY ./weave-npc /usr/bin/weave-npc
 COPY ./ulogd.conf /etc/ulogd.conf
 ENTRYPOINT ["/usr/bin/weave-npc"]
+
+# These labels will change for every build, and should therefore be the last layer of the image:
+ARG revision
+LABEL org.opencontainers.image.revision="${revision}" \
+      org.label-schema.vcs-ref="${revision}"
@@ -8,7 +8,6 @@ import (
 	"github.com/coreos/go-iptables/iptables"
 	"github.com/spf13/cobra"
 	coreapi "k8s.io/api/core/v1"
-	extnapi "k8s.io/api/extensions/v1beta1"
 	networkingv1 "k8s.io/api/networking/v1"
 	"k8s.io/apimachinery/pkg/fields"
 	"k8s.io/apimachinery/pkg/runtime"
@@ -18,8 +17,9 @@ import (
 	"k8s.io/client-go/tools/cache"

 	"github.com/weaveworks/weave/common"
+	"github.com/weaveworks/weave/net"
+	"github.com/weaveworks/weave/net/ipset"
 	"github.com/weaveworks/weave/npc"
-	"github.com/weaveworks/weave/npc/ipset"
 	"github.com/weaveworks/weave/npc/metrics"
 	"github.com/weaveworks/weave/npc/ulogd"
 )
@@ -30,7 +30,7 @@ var (
 	logLevel    string
 	allowMcast  bool
 	nodeName    string
-	legacy      bool
+	maxList     int
 )

 func handleError(err error) { common.CheckFatal(err) }
@@ -52,11 +52,31 @@ func resetIPTables(ipt *iptables.IPTables) error {
 		return err
 	}

-	return ipt.ClearChain(npc.TableFilter, npc.MainChain)
+	if err := ipt.ClearChain(npc.TableFilter, npc.MainChain); err != nil {
+		return err
+	}
+
+	if err := ipt.ClearChain(npc.TableFilter, npc.EgressMarkChain); err != nil {
+		return err
+	}
+
+	if err := ipt.ClearChain(npc.TableFilter, npc.EgressCustomChain); err != nil {
+		return err
+	}
+
+	if err := ipt.ClearChain(npc.TableFilter, npc.EgressDefaultChain); err != nil {
+		return err
+	}
+
+	// We do not clear npc.EgressChain here because otherwise, in the case of restarting
+	// weave-npc process, all egress traffic is allowed for a short period of time.
+	// The chain is created in createBaseRules.
+
+	return nil
 }

 func resetIPSets(ips ipset.Interface) error {
-	// Remove ipsets prefixed `weave-` only
+	// Remove ipsets prefixed `weave-` only.

 	sets, err := ips.List(npc.IpsetNamePrefix)
 	if err != nil {
@@ -76,6 +96,11 @@ func resetIPSets(ips ipset.Interface) error {
 	}

 	for _, s := range sets {
+		// LocalIPset might be used by WEAVE-NPC-EGRESS chain which we do not
+		// flush, so we cannot destroy it.
+		if s == npc.LocalIpset {
+			continue
+		}
 		common.Log.Debugf("Destroying ipset '%s'", string(s))
 		if err := ips.Destroy(s); err != nil {
 			common.Log.Errorf("Failed to destroy ipset '%s'", string(s))
@@ -111,11 +136,81 @@ func createBaseRules(ipt *iptables.IPTables, ips ipset.Interface) error {
 	}

 	// If the destination address is not any of the local pods, let it through
-	if err := ips.Create(npc.LocalIpset, ipset.HashIP); err != nil {
+	found, err := ipsetExist(ips, npc.LocalIpset)
+	if err != nil {
 		return err
 	}
-	return ipt.Append(npc.TableFilter, npc.MainChain,
-		"-m", "set", "!", "--match-set", npc.LocalIpset, "dst", "-j", "ACCEPT")
+	if !found {
+		if err := ips.Create(npc.LocalIpset, ipset.HashIP); err != nil {
+			return err
+		}
+	}
+	if err := ipt.Append(npc.TableFilter, npc.MainChain,
+		"-m", "set", "!", "--match-set", npc.LocalIpset, "dst", "-j", "ACCEPT"); err != nil {
+		return err
+	}
+
+	if err := ipt.Append(npc.TableFilter, npc.EgressMarkChain,
+		"-j", "MARK", "--set-xmark", npc.EgressMark); err != nil {
+		return err
+	}
+
+	// Egress rules:
+	//
+	// -A WEAVE-NPC-EGRESS -m state --state RELATED,ESTABLISHED -j ACCEPT
+	// -A WEAVE-NPC-EGRESS -m set ! --match-set weave-local-pods src -j RETURN
+	// -A WEAVE-NPC-EGRESS -d 224.0.0.0/4 -j RETURN
+	// -A WEAVE-NPC-EGRESS -m state --state NEW -j WEAVE-NPC-EGRESS-DEFAULT
+	// -A WEAVE-NPC-EGRESS -m state --state NEW -m mark ! --mark 0x40000/0x40000 -j WEAVE-NPC-EGRESS-CUSTOM
+	// -A WEAVE-NPC-EGRESS -m state --state NEW -m mark ! --mark 0x40000/0x40000 -j NFLOG --nflog-group 86
+	// -A WEAVE-NPC-EGRESS -m mark ! --mark 0x40000/0x40000 -j DROP
+	//
+	// -A WEAVE-NPC-EGRESS-CUSTOM <rulespec> -j MARK --set-xmark 0x40000/0x40000
+	// -A WEAVE-NPC-EGRESS-CUSTOM <rulespec> -j RETURN
+	//
+	// -A WEAVE-NPC-EGRESS-DEFAULT <rulespec> -j MARK --set-xmark 0x40000/0x40000
+	// -A WEAVE-NPC-EGRESS-DEFAULT <rulespec> -j RETURN
+	//
+	// For each rule we create two (mark and return). We cannot just accept
+	// a packet if it matches any rule, as a packet might need to traverse
+	// the ingress npc as well which happens later in the chain (in some cases
+	// we cannot detect whether packet is ingress or egress, so we need to
+	// check both chains).
+
+	ruleSpecs := [][]string{
+		{"-m", "state", "--state", "RELATED,ESTABLISHED", "-j", "ACCEPT"},
+		{"-m", "state", "--state", "NEW", "-m", "set", "!", "--match-set", npc.LocalIpset, "src", "-j", "RETURN"},
+	}
+	if allowMcast {
+		ruleSpecs = append(ruleSpecs, []string{"-d", "224.0.0.0/4", "-j", "RETURN"})
+	}
+	ruleSpecs = append(ruleSpecs, [][]string{
+		{"-m", "state", "--state", "NEW", "-j", string(npc.EgressDefaultChain)},
+		{"-m", "state", "--state", "NEW", "-m", "mark", "!", "--mark", npc.EgressMark, "-j", string(npc.EgressCustomChain)},
+		{"-m", "state", "--state", "NEW", "-m", "mark", "!", "--mark", npc.EgressMark, "-j", "NFLOG", "--nflog-group", "86"},
+		{"-m", "mark", "!", "--mark", npc.EgressMark, "-j", "DROP"},
+	}...)
+	if err := net.AddChainWithRules(ipt, npc.TableFilter, npc.EgressChain, ruleSpecs); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// Dummy way to check whether a given ipset exists.
+// TODO(brb) Use "ipset -exist create <..>" for our purpose instead (for some reasons
+// creating an ipset with -exist fails).
+func ipsetExist(ips ipset.Interface, name ipset.Name) (bool, error) {
+	sets, err := ips.List(string(name))
+	if err != nil {
+		return false, err
+	}
+	for _, s := range sets {
+		if s == name {
+			return true, nil
+		}
+	}
+	return false, nil
 }

 func root(cmd *cobra.Command, args []string) {
@@ -131,10 +226,6 @@ func root(cmd *cobra.Command, args []string) {
 	}
 	common.Log.Infof("Starting Weaveworks NPC %s; node name %q", version, nodeName)

-	if legacy {
-		common.Log.Info("Running in legacy mode (k8s pre-1.7 network policy semantics)")
-	}
-
 	if err := metrics.Start(metricsAddr); err != nil {
 		common.Log.Fatalf("Failed to start metrics: %v", err)
 	}
@@ -152,13 +243,13 @@ func root(cmd *cobra.Command, args []string) {
 	ipt, err := iptables.New()
 	handleError(err)

-	ips := ipset.New(common.LogLogger())
+	ips := ipset.New(common.LogLogger(), maxList)

 	handleError(resetIPTables(ipt))
 	handleError(resetIPSets(ips))
 	handleError(createBaseRules(ipt, ips))

-	npc := npc.New(nodeName, legacy, ipt, ips)
+	npc := npc.New(nodeName, ipt, ips)

 	nsController := makeController(client.Core().RESTClient(), "namespaces", &coreapi.Namespace{},
 		cache.ResourceEventHandlerFuncs{
@@ -219,11 +310,7 @@ func root(cmd *cobra.Command, args []string) {
 			handleError(npc.UpdateNetworkPolicy(old, new))
 		},
 	}
-	if legacy {
-		npController = makeController(client.Extensions().RESTClient(), "networkpolicies", &extnapi.NetworkPolicy{}, npHandlers)
-	} else {
-		npController = makeController(client.NetworkingV1().RESTClient(), "networkpolicies", &networkingv1.NetworkPolicy{}, npHandlers)
-	}
+	npController = makeController(client.NetworkingV1().RESTClient(), "networkpolicies", &networkingv1.NetworkPolicy{}, npHandlers)

 	go nsController.Run(wait.NeverStop)
 	go podController.Run(wait.NeverStop)
@@ -244,7 +331,7 @@ func main() {
 	rootCmd.PersistentFlags().StringVar(&logLevel, "log-level", "debug", "logging level (debug, info, warning, error)")
 	rootCmd.PersistentFlags().BoolVar(&allowMcast, "allow-mcast", true, "allow all multicast traffic")
 	rootCmd.PersistentFlags().StringVar(&nodeName, "node-name", "", "only generate rules that apply to this node")
-	rootCmd.PersistentFlags().BoolVar(&legacy, "use-legacy-netpol", false, "use legacy network policies (pre k8s 1.7 vsn)")
+	rootCmd.PersistentFlags().IntVar(&maxList, "max-list-size", 1024, "maximum size of ipset list (for namespaces)")

 	handleError(rootCmd.Execute())
 }
@@ -1,7 +1,17 @@
 # This is a nearly-empty image that we use to create a data-only container for persistence
 FROM scratch
-LABEL maintainer "Weaveworks Inc <help@weave.works>"
-LABEL works.weave.role=system
+
+# These labels are pretty static, and can therefore be added early on:
+LABEL works.weave.role="system" \
+      maintainer="Weaveworks <help@weave.works>" \
+      org.opencontainers.image.title="weavedb" \
+      org.opencontainers.image.source="https://github.com/weaveworks/weave" \
+      org.opencontainers.image.vendor="Weaveworks"
+
 ENTRYPOINT ["data-only"]
 # Work round Docker refusing to save an empty image
 COPY Dockerfile /
+
+# This label will change for every build, and should therefore be the last layer of the image:
+ARG revision
+LABEL org.opencontainers.image.revision="${revision}"
@@ -1,5 +1,11 @@
 FROM DOCKERHUB_USER/weaveARCH_EXT

+# These labels are pretty static, and can therefore be added early on:
+LABEL maintainer="Weaveworks <help@weave.works>" \
+      org.opencontainers.image.title="weaveexec" \
+      org.opencontainers.image.source="https://github.com/weaveworks/weave" \
+      org.opencontainers.image.vendor="Weaveworks"
+
 ENTRYPOINT ["/home/weave/sigproxy", "/home/weave/weave"]

 ADD ./sigproxy ./symlink /home/weave/
@@ -7,3 +13,7 @@ ADD ./weavewait /w/w
 ADD ./weavewait_noop /w-noop/w
 ADD ./weavewait_nomcast /w-nomcast/w
 WORKDIR /home/weave
+
+# This label will change for every build, and should therefore be the last layer of the image:
+ARG revision
+LABEL org.opencontainers.image.revision="${revision}"
@@ -1,17 +1,24 @@
 FROM ALPINE_BASEIMAGE

-# If we're building for another architecture than amd64, the CROSS_BUILD_ placeholder is removed so e.g. CROSS_BUILD_COPY turns into COPY
-# If we're building normally, for amd64, CROSS_BUILD lines are removed
-CROSS_BUILD_COPY qemu-QEMUARCH-static /usr/bin/
-
-LABEL maintainer "Weaveworks Inc <help@weave.works>"
-LABEL works.weave.role=system \
+# These labels are pretty static, and can therefore be added early on:
+LABEL works.weave.role="system" \
+      maintainer="Weaveworks <help@weave.works>" \
+      org.opencontainers.image.title="Weave Net" \
+      org.opencontainers.image.description="Weave Net creates a virtual network that connects Docker containers across multiple hosts and enables their automatic discovery" \
+      org.opencontainers.image.url="https://weave.works" \
+      org.opencontainers.image.source="https://github.com/weaveworks/weave" \
+      org.opencontainers.image.vendor="Weaveworks" \
+      org.label-schema.schema-version="1.0" \
      org.label-schema.name="Weave Net" \
      org.label-schema.description="Weave Net creates a virtual network that connects Docker containers across multiple hosts and enables their automatic discovery" \
      org.label-schema.url="https://weave.works" \
      org.label-schema.vcs-url="https://github.com/weaveworks/weave" \
      org.label-schema.vendor="Weaveworks"

+# If we're building for another architecture than amd64, the CROSS_BUILD_ placeholder is removed so e.g. CROSS_BUILD_COPY turns into COPY
+# If we're building normally, for amd64, CROSS_BUILD lines are removed
+CROSS_BUILD_COPY qemu-QEMUARCH-static /usr/bin/
+
 RUN apk add --update \
    curl \
    ethtool \
@@ -29,3 +36,8 @@ ADD ./weaveutil /usr/bin/
 ADD weavedata.db /weavedb/
 ENTRYPOINT ["/home/weave/weaver"]
 WORKDIR /home/weave
+
+# These labels will change for every build, and should therefore be the last layer of the image:
+ARG revision
+LABEL org.opencontainers.image.revision="${revision}" \
+      org.label-schema.vcs-ref="${revision}"
@@ -329,7 +329,7 @@ func HandleHTTP(muxRouter *mux.Router, version string, router *weave.NetworkRout
 			w.Write(json)
 		})

-	muxRouter.Methods("GET").Path("/report").Queries("format", "{format}").HandlerFunc(
+	muxRouter.Methods("GET").Path("/report").HandlerFunc(
 		func(w http.ResponseWriter, r *http.Request) {
 			funcs := template.FuncMap{
 				"json": func(v interface{}) string {
@@ -337,7 +337,12 @@ func HandleHTTP(muxRouter *mux.Router, version string, router *weave.NetworkRout
 					return string(a)
 				},
 			}
-			formatTemplate, err := template.New("format").Funcs(funcs).Parse(mux.Vars(r)["format"])
+			format, ok := r.URL.Query()["format"]
+			if !ok || len(format) != 1 {
+				http.Error(w, "error: must supply one format parameter", http.StatusBadRequest)
+				return
+			}
+			formatTemplate, err := template.New("format").Funcs(funcs).Parse(format[0])
 			if err != nil {
 				http.Error(w, err.Error(), http.StatusBadRequest)
 				return
@@ -26,6 +26,7 @@ import (
 	"github.com/weaveworks/weave/nameserver"
 	weavenet "github.com/weaveworks/weave/net"
 	"github.com/weaveworks/weave/net/address"
+	"github.com/weaveworks/weave/net/ipset"
 	"github.com/weaveworks/weave/plugin"
 	weaveproxy "github.com/weaveworks/weave/proxy"
 	weave "github.com/weaveworks/weave/router"
@@ -221,6 +222,7 @@ func main() {
 	mflag.BoolVar(&pluginConfig.EnableV2Multicast, []string{"-plugin-v2-multicast"}, false, "enable multicast for Docker plugin (v2)")
 	mflag.StringVar(&pluginConfig.Socket, []string{"-plugin-socket"}, "/run/docker/plugins/weave.sock", "plugin socket on which to listen")
 	mflag.StringVar(&pluginConfig.MeshSocket, []string{"-plugin-mesh-socket"}, "/run/docker/plugins/weavemesh.sock", "plugin socket on which to listen in mesh mode")
+	mflag.BoolVar(&bridgeConfig.NoMasqLocal, []string{"-no-masq-local"}, false, "do not SNAT external traffic sent to containers running on this node")

 	proxyConfig := newProxyConfig()

@@ -305,7 +307,8 @@ func main() {

 	bridgeConfig.Mac = name.String()
 	bridgeConfig.Port = config.Port
-	bridgeType, err := weavenet.EnsureBridge(procPath, &bridgeConfig, Log)
+	ips := ipset.New(common.LogLogger(), 0)
+	bridgeType, err := weavenet.EnsureBridge(procPath, &bridgeConfig, Log, ips)
 	checkFatal(err)
 	Log.Println("Bridge type is", bridgeType)

@@ -336,6 +339,9 @@ func main() {
 	if bridgeConfig.AWSVPC && !ipamConfig.Enabled() {
 		Log.Fatalf("--awsvpc mode requires IPAM enabled")
 	}
+	if bridgeConfig.AWSVPC && bridgeConfig.NoMasqLocal {
+		Log.Fatalf("--awsvpc mode is not compatible with the --no-masq-local option")
+	}

 	db, err := db.NewBoltDB(dbPrefix)
 	checkFatal(err)
@@ -395,17 +401,19 @@ func main() {
 	var (
 		allocator     *ipam.Allocator
 		defaultSubnet address.CIDR
-		trackerName   string
 	)
 	if ipamConfig.Enabled() {
 		var t tracker.LocalRangeTracker
 		if bridgeConfig.AWSVPC {
-			Log.Infoln("Creating AWSVPC LocalRangeTracker")
 			t, err = tracker.NewAWSVPCTracker(bridgeConfig.WeaveBridgeName)
 			if err != nil {
 				Log.Fatalf("Cannot create AWSVPC LocalRangeTracker: %s", err)
 			}
-			trackerName = "awsvpc"
+		} else if bridgeConfig.NoMasqLocal {
+			t = weavenet.NewNoMasqLocalTracker(ips)
+		}
+		if t != nil {
+			Log.Infof("Using %q LocalRangeTracker", t)
 		}

 		preClaims, err := findExistingAddresses(dockerCli, bridgeConfig.WeaveBridgeName)
@@ -453,7 +461,7 @@ func main() {
 	if httpAddr != "" {
 		muxRouter := mux.NewRouter()
 		if allocator != nil {
-			allocator.HandleHTTP(muxRouter, defaultSubnet, trackerName, dockerCli)
+			allocator.HandleHTTP(muxRouter, defaultSubnet, dockerCli)
 		}
 		if ns != nil {
 			ns.HandleHTTP(muxRouter, dockerCli)
@@ -4,10 +4,7 @@ package main
 import (
 	"fmt"
 	"os"
-	"path/filepath"
 	"strings"
-
-	weavenet "github.com/weaveworks/weave/net"
 )

 var commands map[string]func([]string) error
@@ -36,12 +33,6 @@ func init() {
 		"create-volume-container":  createVolumeContainer,
 		"attach-container":         attach,
 		"detach-container":         detach,
-		"configure-arp":            configureARP,
-		"check-iface":              checkIface,
-		"del-iface":                delIface,
-		"setup-iface":              setupIface,
-		"setup-iface-addrs":        setupIfaceAddrs,
-		"list-netdevs":             listNetDevs,
 		"cni-net":                  cniNet,
 		"cni-ipam":                 cniIPAM,
 		"bridge-ip":                bridgeIP,
@@ -55,14 +46,6 @@ func init() {
 }

 func main() {
-	// force re-exec of this binary
-	selfPath, err := filepath.EvalSymlinks("/proc/self/exe")
-	if err != nil {
-		fmt.Fprintln(os.Stderr, err)
-		os.Exit(1)
-	}
-	weavenet.WeaveUtilCmd = selfPath
-
 	// If no args passed, act as CNI plugin based on executable name
 	switch {
 	case len(os.Args) == 1 && strings.HasSuffix(os.Args[0], "weave-ipam"):
@@ -1,141 +0,0 @@
-package main
-
-import (
-	"encoding/json"
-	"fmt"
-	"strconv"
-	"strings"
-
-	"github.com/j-keck/arping"
-	"github.com/vishvananda/netlink"
-
-	weavenet "github.com/weaveworks/weave/net"
-)
-
-// checkIface returns an error if the given interface cannot be found.
-func checkIface(args []string) error {
-	if len(args) != 1 {
-		cmdUsage("check-iface", "<iface-name>")
-	}
-	ifaceName := args[0]
-
-	if _, err := netlink.LinkByName(ifaceName); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func delIface(args []string) error {
-	if len(args) != 1 {
-		cmdUsage("del-iface", "<iface-name>")
-	}
-	ifName := args[0]
-
-	link, err := netlink.LinkByName(ifName)
-	if err != nil {
-		return err
-	}
-	return netlink.LinkDel(link)
-}
-
-// setupIface renames the given iface and configures its ARP cache settings.
-func setupIface(args []string) error {
-	if len(args) != 2 {
-		cmdUsage("setup-iface", "<iface-name> <new-iface-name>")
-	}
-	ifaceName := args[0]
-	newIfName := args[1]
-
-	return weavenet.SetupIface(ifaceName, newIfName)
-}
-
-// setupIfaceAddrs sets up addresses on an interface. It expects to be called inside the container's netns.
-func setupIfaceAddrs(args []string) error {
-	if len(args) < 1 {
-		cmdUsage("setup-iface-addrs", "<iface-name> <with-multicast> <cidr>...")
-	}
-	link, err := netlink.LinkByName(args[0])
-	if err != nil {
-		return err
-	}
-	withMulticastRoute, err := strconv.ParseBool(args[1])
-	if err != nil {
-		return err
-	}
-	cidrs, err := parseCIDRs(args[2:])
-	if err != nil {
-		return err
-	}
-	return weavenet.SetupIfaceAddrs(link, withMulticastRoute, cidrs)
-}
-
-func configureARP(args []string) error {
-	if len(args) != 2 {
-		cmdUsage("configure-arp", "<iface-name-prefix> <root-path>")
-	}
-	prefix := args[0]
-	rootPath := args[1]
-
-	links, err := netlink.LinkList()
-	if err != nil {
-		return err
-	}
-	for _, link := range links {
-		ifName := link.Attrs().Name
-		if strings.HasPrefix(ifName, prefix) {
-			weavenet.ConfigureARPCache(rootPath+"/proc", ifName)
-			if addrs, err := netlink.AddrList(link, netlink.FAMILY_V4); err == nil {
-				for _, addr := range addrs {
-					arping.GratuitousArpOverIfaceByName(addr.IPNet.IP, ifName)
-				}
-			}
-		}
-	}
-
-	return nil
-}
-
-// listNetDevs outputs network ifaces identified by the given indexes
-// in the format of weavenet.Dev.
-func listNetDevs(args []string) error {
-	if len(args) == 0 {
-		cmdUsage("list-netdevs", "<iface-index>[ <iface-index>]")
-	}
-
-	indexes := make(map[int]struct{})
-	for _, index := range args {
-		if index != "" {
-			id, err := strconv.Atoi(index)
-			if err != nil {
-				return err
-			}
-			indexes[id] = struct{}{}
-		}
-	}
-
-	links, err := netlink.LinkList()
-	if err != nil {
-		return err
-	}
-
-	var netdevs []weavenet.Dev
-
-	for _, link := range links {
-		if _, found := indexes[link.Attrs().Index]; found {
-			netdev, err := weavenet.LinkToNetDev(link)
-			if err != nil {
-				return err
-			}
-			netdevs = append(netdevs, netdev)
-		}
-	}
-
-	nds, err := json.Marshal(netdevs)
-	if err != nil {
-		return err
-	}
-	fmt.Println(string(nds))
-
-	return nil
-}
@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"strings"

+	"github.com/docker/docker/api/types/filters"
 	"github.com/docker/docker/client"
 	docker "github.com/fsouza/go-dockerclient"
 )
@@ -58,7 +59,7 @@ func isDockerPluginEnabled(args []string) error {

 	ctx := context.Background()

-	plugins, err := c.PluginList(ctx)
+	plugins, err := c.PluginList(ctx, filters.Args{})
 	if err != nil {
 		return err
 	}
@@ -104,7 +104,8 @@ Yes, of course!  Weave allows you to run isolated networks and still allow open
 You must permit traffic to flow through TCP 6783 and UDP 6783/6784,
 which are Weave’s control and data ports.

-The daemon also uses TCP port 6782 for [metrics](/site/tasks/manage/metrics.md), but
+The daemon also uses TCP 6781/6782 for
+[metrics](/site/tasks/manage/metrics.md#metrics-endpoint-addresses), but
 you would only need to open up this port if you wish to collect metrics
 from another host.

@@ -7,21 +7,26 @@ search_type: Documentation
 The following topics are discussed:

 * [Installation](#install)
- * [Upgrading Kubernetes to version 1.6](#kube-1.6-upgrade)
- * [Upgrading the Daemon Sets](#daemon-sets)
- * [CPU and Memory Requirements](#resources)
- * [Pod Eviction](#eviction)
+   * [Upgrading Kubernetes to version 1.6](#kube-1.6-upgrade)
+   * [Upgrading the Daemon Sets](#daemon-sets)
+   * [CPU and Memory Requirements](#resources)
+   * [Pod Eviction](#eviction)
 * [Features](#features)
- * [Pod Network](#pod-network)
- * [Network Policy](#npc)
+   * [Pod Network](#pod-network)
+   * [Network Policy](#npc)
 * [Troubleshooting](#troubleshooting)
- * [Troubleshooting Blocked Connections](#blocked-connections)
- * [Things to watch out for](#key-points)
+   * [Reading the logs](#logs)
+   * [Troubleshooting Blocked Connections](#blocked-connections)
+   * [Things to watch out for](#key-points)
 * [Changing Configuration Options](#configuration-options)


 ## <a name="install"></a> Installation

+*Before installing Weave Net, you should make sure the following ports are not
+blocked by your firewall: TCP 6783 and UDP 6783/6784.
+For more details, see the [FAQ](/site/faq.md#ports).*
+
 Weave Net can be installed onto your CNI-enabled Kubernetes cluster
 with a single command:

@@ -186,12 +191,46 @@ definition](https://v1-7.docs.kubernetes.io/docs/api-reference/v1.7/#networkpoli

 ## <a name="troubleshooting"></a> Troubleshooting

+The first thing to check is whether Weave Net is up and
+running. The `kubectl apply` command you used to install it only
+_requests_ that it be downloaded and started; if anything goes wrong
+at startup, those details will only be visible in the [logs](#logs) of
+the container(s).
+
+To check what is running:
+
+```
+$ kubectl get pods -n kube-system -l name=weave-net
+NAME              READY  STATUS   RESTARTS  AGE
+weave-net-1jkl6   2/2    Running  0         1d
+weave-net-bskbv   2/2    Running  0         1d
+weave-net-m4x1b   2/2    Running  0         1d
+```
+
+You should see one line for each node in your cluster; each line
+should have STATUS "Running", and READY should be 2 out of 2. If you
+see a STATUS like "Error" or "CrashLoopBackoff", look in the logs of
+the container with that status.
+
+### <a name="logs"></a> Reading the logs
+
+Pick one of the pods from the list output by `kubectl get pods` and
+ask for the logs like this:
+
+```
+$ kubectl logs -n kube-system weave-net-1jkl6 weave
+```
+
+For easier viewing, pipe the output into a file , especially if
+it is long.
+
 Many Kubernetes network issues occur at a higher level than Weave Net.
 The [Kubernetes Service Debugging Guide]
 (https://kubernetes.io/docs/tasks/debug-application-cluster/debug-service/)
 has a detailed step-by-step guide.

-The status of Weave Net can be checked by running its CLI commands. This can be done in various ways:
+Once it is up and running, the status of Weave Net can be checked by
+running its CLI commands. This can be done in various ways:

 1\. [Install the `weave` script](/site/installing-weave.md) and run:

@@ -302,7 +341,15 @@ UDP connection from 10.32.0.7:56648 to 10.32.0.11:80 blocked by Weave NPC.
  impossible to correctly enforce network policies that restrict which
  pods can talk.
 - If you do set the `--cluster-cidr` option on kube-proxy, make sure
-  it matches the `IPALLOC_RANGE` given to Weave Net (see below)
+  it matches the `IPALLOC_RANGE` given to Weave Net (see below).
+- IP forwarding must be enabled on each node, in order for pods to
+  access Kubernetes services or other IP addresses on another
+  network. Check this with `sysctl net.ipv4.ip_forward`; the result
+  should be `1`. (Be aware that there can be security implications of
+  enabling IP forwarding).
+- Weave Net can be run on minikube v0.28 or later with the default CNI config shipped with minikube
+  being disabled. See [#3124](https://github.com/weaveworks/weave/issues/3124#issuecomment-397820940)
+  for more details.

 ## <a name="configuration-options"></a> Changing Configuration Options

@@ -323,7 +370,6 @@ You can customise the YAML you get from `cloud.weave.works` by passing some of W
  - `disable-npc`: boolean (`true|false`). Default: `false`.
  - `env.NAME=VALUE`: add environment variable `NAME` and set it to `VALUE`.
  - `seLinuxOptions.NAME=VALUE`: add SELinux option `NAME` and set it to `VALUE`, e.g. `seLinuxOptions.type=spc_t`
-  - `use-legacy-netpol`: use [legacy NetworkPolicy semantics](https://v1-6.docs.kubernetes.io/docs/api-reference/v1.6/#networkpolicy-v1beta1-extensions), boolean (`true|false`). Default: `true` for Kubernetes version <= 1.6, `false` for > 1.6.

 The list of variables you can set is:

@@ -355,6 +401,9 @@ The list of variables you can set is:
  a larger size for better performance if your network supports jumbo
  frames - see [here](/site/tasks/manage/fastdp.md#mtu) for more
  details.
+* `NO_MASQ_LOCAL` - set to 1 to preserve the client source IP address when
+  accessing Service annotated with `service.spec.externalTrafficPolicy=Local`.
+  The feature works only with Weave IPAM (default).

 Example:
 ```
@@ -67,3 +67,18 @@ Columns are as follows:
  partition, it may be because the peer has failed and needs to be
  removed administratively - see [Starting, Stopping and Removing
  Peers](/site/tasks/ipam/stop-remove-peers-ipam.md) for more details.
+
+
+### <a name="seeded-different-peers"></a>Seeded by Different Peers
+
+If you see the message: `IP allocation was seeded by different peers`,
+this means that some Weave Net peers were initialized into one cluster
+and some into another cluster; Weave Net cannot operate in this state.
+
+To recover, you need to eliminate the IPAM data from the affected
+nodes and restart.  If you installed via the Kubernetes Addon, this
+data will be in a file under `/var/lib/weave` on the node - delete
+this file and restart the node.
+
+For other installations, run `weave reset` and restart. Any existing
+connections to containers will be lost.
@@ -157,6 +157,9 @@ The columns are as follows:
   the encryption mode, data transport method, remote peer name and
   nickname for pending and established connections, mtu if known

+Specific error messages:
+* `IP allocation was seeded by different peers` - [more details here](/site/ipam/troubleshooting-ipam.md#seeded-different-peers)
+
 ### <a name="weave-status-peers"></a>List Peers

 Detailed information on peers can be obtained with `weave status
@@ -329,5 +332,6 @@ and the container image versions as git hashes.

 **See Also**

+ * [Troubleshooting the Kubernetes Addon](/site/kubernetes/kube-addon/#troubleshooting)
 * [Troubleshooting IPAM](/site/tasks/ipam/troubleshooting-ipam.md)
 * [Troubleshooting the Proxy](/site/tasks/weave-docker-api/using-proxy.md)
@@ -4,7 +4,7 @@

 tear_down_kubeadm() {
    for host in $HOSTS; do
-        run_on $host "sudo kubeadm reset && sudo rm -r -f /opt/cni/bin/*weave*"
+        run_on $host "sudo kubeadm reset --force && sudo rm -r -f /opt/cni/bin/*weave*"
        # Remove the rule to ensure that api-server is not accessible while kube-proxy
        # is not ready. Otherwise, we have a race between "-j KUBE-FORWARD" and "-j WEAVE-NPC"
        # which makes the NodePort isolation test case to fail.
@@ -44,16 +44,15 @@ for host in $HOSTS; do
 done

 if [ -n "$COVERAGE" ]; then
-    COVERAGE_ARGS="env:\\n                - name: EXTRA_ARGS\\n                  value: \"-test.coverprofile=/home/weave/cover.prof --\""
+    WEAVE_ENV_VARS="env:\\n                - name: EXTRA_ARGS\\n                  value: \"-test.coverprofile=/home/weave/cover.prof --\""
 else
-    COVERAGE_ARGS="env:"
+    WEAVE_ENV_VARS="env:"
 fi

 # Ensure Kubernetes uses locally built container images and inject code coverage environment variable (or do nothing depending on $COVERAGE):
 sed -e "s%imagePullPolicy: Always%imagePullPolicy: Never%" \
-    -e "s%env:%$COVERAGE_ARGS%" \
-    -e "s%#npc-args%              args:\n                - '--use-legacy-netpol'%" \
-    "$(dirname "$0")/../prog/weave-kube/weave-daemonset-k8s-1.7.yaml" | run_on "$HOST1" "$KUBECTL apply -n kube-system -f -"
+    -e "s%env:%$WEAVE_ENV_VARS%" \
+    "$(dirname "$0")/../prog/weave-kube/weave-daemonset-k8s-1.8.yaml" | run_on "$HOST1" "$KUBECTL apply -n kube-system -f -"

 sleep 5

@@ -63,7 +62,7 @@ check_connections() {

 assert_raises 'wait_for_x check_connections "connections to establish"'

-# Check we can ping between the Weave bridg IPs on each host
+# Check we can ping between the Weave bridge IPs on each host
 HOST1EXPIP=$($SSH $HOST1 "weave expose" || true)
 HOST2EXPIP=$($SSH $HOST2 "weave expose" || true)
 HOST3EXPIP=$($SSH $HOST3 "weave expose" || true)
@@ -76,10 +75,19 @@ assert "run_on $HOST1 ps aux | grep -c '[d]efunct'" "0"
 assert "run_on $HOST2 ps aux | grep -c '[d]efunct'" "0"
 assert "run_on $HOST3 ps aux | grep -c '[d]efunct'" "0"

-# Set up a simple network policy so all our test pods can talk to each other
-run_on $HOST1 "$KUBECTL annotate ns default net.beta.kubernetes.io/network-policy='{\"ingress\":{\"isolation\":\"DefaultDeny\"}}'"
+# Set up simple network policies so all our test pods can talk to each other
 run_on $HOST1 "$KUBECTL apply -f -" <<EOF
-apiVersion: extensions/v1beta1
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: default-deny
+spec:
+  podSelector: {}
+  policyTypes:
+  - Ingress
+EOF
+run_on $HOST1 "$KUBECTL apply -f -" <<EOF
+apiVersion: networking.k8s.io/v1
 kind: NetworkPolicy
 metadata:
  name: test840
@@ -102,7 +110,7 @@ EOF

 # Another policy, this time with no 'from' section, just to check that doesn't cause a crash
 run_on $HOST1 "$KUBECTL apply -f -" <<EOF
-apiVersion: extensions/v1beta1
+apiVersion: networking.k8s.io/v1
 kind: NetworkPolicy
 metadata:
  name: test840f
@@ -179,17 +187,6 @@ run_on $HOST1 "$KUBECTL run nettest-deny --labels=\"access=deny,run=nettest-deny
 denyPodName=$($SSH $HOST1 "$KUBECTL get pods -l run=nettest-deny -o go-template='{{(index .items 0).metadata.name}}'")
 assert_raises "! $SSH $HOST1 $KUBECTL exec $denyPodName -- curl -s -S -f -m 2 http://$DOMAIN:8080/status >/dev/null"

-# Restart weave-net with npc in non-legacy mode
-$SSH $HOST1 "$KUBECTL delete ds weave-net -n=kube-system"
-sed -e "s%imagePullPolicy: Always%imagePullPolicy: Never%" \
-    -e "s%env:%$COVERAGE_ARGS%" \
-    "$(dirname "$0")/../prog/weave-kube/weave-daemonset-k8s-1.7.yaml" | run_on "$HOST1" "$KUBECTL apply -n kube-system -f -"
-
-assert_raises 'wait_for_x check_all_pods_communicate pods'
-
-# nettest-deny should still not be able to reach nettest pods
-assert_raises "! $SSH $HOST1 $KUBECTL exec $denyPodName -- curl -s -S -f -m 2 http://$DOMAIN:8080/status >/dev/null"
-
 # check access via virtual IP
 VIRTUAL_IP=$($SSH $HOST1 $KUBECTL get service netvirt -o template --template={{.spec.clusterIP}})
 assert_raises   "$SSH $HOST1 $KUBECTL exec     $podName -- curl -s -S -f -m 2 http://$VIRTUAL_IP/status >/dev/null"
@@ -225,12 +222,39 @@ run_on $HOST1 "$KUBECTL delete netpol allow-nettest-deny"
 # nettest-deny should still not be able to reach nettest pods
 assert_raises "! $SSH $HOST1 $KUBECTL exec $denyPodName -- curl -s -S -f -m 2 http://$DOMAIN:8080/status >/dev/null"

-# allow access for all
+# Create many namespaces to stress namespaceSelector
+for n in 1 2 3 4 5 6 7 8 9 10; do
+    run_on $HOST1 "$KUBECTL create namespace namespace${n}"
+done
+
+# allow access from any namespace
 run_on $HOST1 "$KUBECTL apply -f -" <<EOF
 apiVersion: networking.k8s.io/v1
 kind: NetworkPolicy
 metadata:
-  name: allow-nettest-deny
+  name: allow-any-namespace
+  namespace: default
+spec:
+  podSelector: {}
+  ingress:
+    - from:
+      - namespaceSelector: {}
+EOF
+
+# Should be able to access from the "deny" pod now
+assert_raises "$SSH $HOST1 $KUBECTL exec $denyPodName -- curl -s -S -f -m 2 http://$DOMAIN:8080/status >/dev/null"
+
+# host should still not be able to reach pods via service virtual IP or NodePort
+# because host is not in a namespace
+assert_raises "! $SSH $HOST1 curl -s -S -f -m 2 http://$VIRTUAL_IP/status >/dev/null"
+assert_raises "! $SSH $HOST1 curl -s -S -f -m 2 http://$HOST2:31138/status >/dev/null"
+
+# allow access from anywhere
+run_on $HOST1 "$KUBECTL apply -f -" <<EOF
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: allow-anywhere
  namespace: default
 spec:
  podSelector: {}
@@ -238,12 +262,85 @@ spec:
    - {}
 EOF

-assert_raises "$SSH $HOST1 $KUBECTL exec $denyPodName -- curl -s -S -f -m 2 http://$DOMAIN:8080/status >/dev/null"
-
 # Virtual IP and NodePort should now work
 assert_raises "$SSH $HOST1 curl -s -S -f -m 2 http://$VIRTUAL_IP/status >/dev/null"
 assert_raises "$SSH $HOST1 curl -s -S -f -m 2 http://$HOST2:31138/status >/dev/null"

+# allow nettest-deny to access only to 8.8.8.0/24
+run_on $HOST1 "$KUBECTL apply -f -" <<EOF
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: egress-nettest-deny-dns
+  namespace: default
+spec:
+  podSelector:
+    matchLabels:
+      run: nettest-deny
+  policyTypes:
+  - Egress
+  egress:
+  - to:
+    - ipBlock:
+        cidr: 8.8.8.0/24
+        except:
+        - 8.8.8.4/32
+EOF
+
+assert_raises "! $SSH $HOST1 $KUBECTL exec $denyPodName -- curl -s -S -f -m 2 http://$DOMAIN:8080/status >/dev/null"
+assert_raises "! $SSH $HOST1 $KUBECTL exec $denyPodName -- dig @8.8.8.4 google.com >/dev/null"
+assert_raises "$SSH $HOST1 $KUBECTL exec $denyPodName -- dig @8.8.8.8 google.com >/dev/null"
+
+# also, allow nettest-deny to access nettest and kube-system (for kube-dns)
+run_on $HOST1 "$KUBECTL label namespace kube-system name=kube-system"
+run_on $HOST1 "$KUBECTL replace -f -" <<EOF
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: egress-nettest-deny-dns
+  namespace: default
+spec:
+  podSelector:
+    matchLabels:
+      run: nettest-deny
+  policyTypes:
+  - Egress
+  egress:
+  - to:
+    - ipBlock:
+        cidr: 8.8.8.0/24
+        except:
+        - 8.8.8.4/32
+    - podSelector:
+        matchLabels:
+          run: nettest
+    - namespaceSelector:
+        matchLabels:
+          name: kube-system
+EOF
+
+assert_raises "$SSH $HOST1 $KUBECTL exec $denyPodName -- curl -s -S -f -m 2 http://$DOMAIN:8080/status >/dev/null"
+
+# Passing --no-masq-local and setting externalTrafficPolicy to Local must preserve
+# the client source IP addr
+
+CLIENT_IP_MASQ="$($SSH $HOST1 curl -sS http://$HOST2:31138/client_ip)"
+
+WEAVE_ENV_VARS="${WEAVE_ENV_VARS}\\n                - name: NO_MASQ_LOCAL\\n                  value: \"1\""
+$SSH $HOST1 "$KUBECTL delete ds weave-net -n=kube-system"
+sed -e "s%imagePullPolicy: Always%imagePullPolicy: Never%" \
+    -e "s%env:%$WEAVE_ENV_VARS%" \
+    "$(dirname "$0")/../prog/weave-kube/weave-daemonset-k8s-1.8.yaml" | run_on "$HOST1" "$KUBECTL apply -n kube-system -f -"
+
+sleep 5
+
+run_on $HOST1 "$KUBECTL patch svc netvirt -p '{\"spec\":{\"externalTrafficPolicy\":\"Local\"}}'"
+
+CLIENT_IP_NO_MASQ="$($SSH $HOST1 curl -sS http://$HOST2:31138/client_ip)"
+
+assert_raises "[ $CLIENT_IP_NO_MASQ != $CLIENT_IP_MASQ ]"
+assert_raises "[ $HOST1IP == $CLIENT_IP_NO_MASQ ]"
+
 tear_down_kubeadm

 # Destroy our test ipset, and implicitly check it is still there
@@ -27,7 +27,7 @@ fi
 function teardown_kubernetes_cluster {
    greyly echo "Tearing down kubernetes cluster"
    for host in $HOSTS; do
-        run_on $host "sudo kubeadm reset && sudo rm -r -f /opt/cni/bin/*weave*"
+        run_on $host "sudo kubeadm reset --force && sudo rm -r -f /opt/cni/bin/*weave*"
    done
 }

@@ -13,7 +13,7 @@
 # limitations under the License.

 FROM bash
-RUN apk add --no-cache curl
+RUN apk add --no-cache curl bind-tools
 ADD webserver webserver
 EXPOSE 8080
 ENTRYPOINT ["/webserver"]
@@ -13,6 +13,8 @@
 // Visit /status to see pass/running/fail determination. (literally, it will
 // return one of those words.)
 //
+// Visit /client_ip to see the source IP addr of the request.
+//
 // /write is used by other network test servers to register connectivity.
 package main

@@ -78,6 +80,20 @@ func (s *State) serveStatus(w http.ResponseWriter, r *http.Request) {
 	fmt.Fprintf(w, "fail")
 }

+// serveClientIP returns the client source IP addr.
+func (s *State) serveClientIP(w http.ResponseWriter, r *http.Request) {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	host, _, err := net.SplitHostPort(r.RemoteAddr)
+	if err != nil {
+		go s.Logf("Warning: unable to parse remote addr: %s", err)
+		w.WriteHeader(http.StatusInternalServerError)
+	}
+
+	fmt.Fprintf(w, host)
+}
+
 // serveRead writes our json encoded state
 func (s *State) serveRead(w http.ResponseWriter, r *http.Request) {
 	s.lock.Lock()
@@ -186,6 +202,7 @@ func main() {
 	http.HandleFunc("/read", state.serveRead)
 	http.HandleFunc("/write", state.serveWrite)
 	http.HandleFunc("/status", state.serveStatus)
+	http.HandleFunc("/client_ip", state.serveClientIP)

 	go log.Fatal(http.ListenAndServe(fmt.Sprintf("0.0.0.0:%d", *port), nil))

@@ -23,4 +23,4 @@ if [ -n "$CIRCLECI" -o -n "$PARALLEL" ]; then
    RUNNER_ARGS="$RUNNER_ARGS -parallel"
 fi

-HOSTS="$HOSTS" "${DIR}/../tools/runner/runner" -timeout=300 $RUNNER_ARGS $TESTS
+HOSTS="$HOSTS" "${DIR}/../tools/runner/runner" -timeout=360 $RUNNER_ARGS $TESTS
@@ -41,15 +41,15 @@ func main() {
 			log.Fatalf("The client key already exists.  Please remove it or specify a different key/cert.")
 		}

-		err = cert.GenerateCert(
-			[]string{""},
-			clientCertPath,
-			clientKeyPath,
-			caCertPath,
-			caKeyPath,
-			org,
-			bits,
-		)
+		err = cert.GenerateCert(&cert.Options{
+			Hosts:     []string{""},
+			CertFile:  clientCertPath,
+			KeyFile:   clientKeyPath,
+			CAFile:    caCertPath,
+			CAKeyFile: caKeyPath,
+			Org:       org,
+			Bits:      bits,
+		})
 		if err != nil {
 			log.Fatalf("Error generating client certificate: %s", err)
 		}
@@ -64,15 +64,15 @@ func main() {

 		if _, err := os.Stat(serverCertPath); os.IsNotExist(err) {
 			log.Printf("Creating server certificate: %s", serverCertPath)
-			err = cert.GenerateCert(
-				[]string{ip},
-				serverCertPath,
-				serverKeyPath,
-				caCertPath,
-				caKeyPath,
-				org,
-				bits,
-			)
+			err = cert.GenerateCert(&cert.Options{
+				Hosts:     []string{ip},
+				CertFile:  serverCertPath,
+				KeyFile:   serverKeyPath,
+				CAFile:    caCertPath,
+				CAKeyFile: caKeyPath,
+				Org:       org,
+				Bits:      bits,
+			})
 			if err != nil {
 				log.Fatalf("error generating server cert: %s", err)
 			}
@@ -1,26 +0,0 @@
-
-# Managing Vendored Dependencies with `git submodule`
-
-These operations result in staged but uncommitted changes to your
-branch; you will need to commit them as normal. Execute them in the
-root of your checkout.
-
-## Adding a New Dependency
-
-    ~/weave$ git submodule add https://example.com/organisation/module vendor/example.com/organisation/module
-
-## Update All Dependencies to Upstream `master`
-
-    ~/weave$ git submodule foreach git pull origin master
-
-## Force a Specific Dependency to a Particular Commit
-
-	~/weave$ (cd vendor/example.com/organisation/module && git checkout <commit-ish>)
-	~/weave$ git add vendor/example.com/organisation/module
-
-## Remove a Dependency
-
-	~/weave$ git submodule deinit vendor/example.com/organisation/module
-    ~/weave$ git rm vendor/example.com/organisation/module
-	~/weave$ rm -rf .git/modules/vendor/example.con/organisation/module
-
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2015 Microsoft Corporation
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
@@ -0,0 +1,12 @@
+# go-ansiterm
+
+This is a cross platform Ansi Terminal Emulation library.  It reads a stream of Ansi characters and produces the appropriate function calls.  The results of the function calls are platform dependent.
+
+For example the parser might receive "ESC, [, A" as a stream of three characters.  This is the code for Cursor Up (http://www.vt100.net/docs/vt510-rm/CUU).  The parser then calls the cursor up function (CUU()) on an event handler.  The event handler determines what platform specific work must be done to cause the cursor to move up one position.
+
+The parser (parser.go) is a partial implementation of this state machine (http://vt100.net/emu/vt500_parser.png).  There are also two event handler implementations, one for tests (test_event_handler.go) to validate that the expected events are being produced and called, the other is a Windows implementation (winterm/win_event_handler.go).
+
+See parser_test.go for examples exercising the state machine and generating appropriate function calls.
+
+-----
+This project has adopted the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/). For more information see the [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/) or contact [opencode@microsoft.com](mailto:opencode@microsoft.com) with any additional questions or comments.
@@ -0,0 +1,188 @@
+package ansiterm
+
+const LogEnv = "DEBUG_TERMINAL"
+
+// ANSI constants
+// References:
+// -- http://www.ecma-international.org/publications/standards/Ecma-048.htm
+// -- http://man7.org/linux/man-pages/man4/console_codes.4.html
+// -- http://manpages.ubuntu.com/manpages/intrepid/man4/console_codes.4.html
+// -- http://en.wikipedia.org/wiki/ANSI_escape_code
+// -- http://vt100.net/emu/dec_ansi_parser
+// -- http://vt100.net/emu/vt500_parser.svg
+// -- http://invisible-island.net/xterm/ctlseqs/ctlseqs.html
+// -- http://www.inwap.com/pdp10/ansicode.txt
+const (
+	// ECMA-48 Set Graphics Rendition
+	// Note:
+	// -- Constants leading with an underscore (e.g., _ANSI_xxx) are unsupported or reserved
+	// -- Fonts could possibly be supported via SetCurrentConsoleFontEx
+	// -- Windows does not expose the per-window cursor (i.e., caret) blink times
+	ANSI_SGR_RESET              = 0
+	ANSI_SGR_BOLD               = 1
+	ANSI_SGR_DIM                = 2
+	_ANSI_SGR_ITALIC            = 3
+	ANSI_SGR_UNDERLINE          = 4
+	_ANSI_SGR_BLINKSLOW         = 5
+	_ANSI_SGR_BLINKFAST         = 6
+	ANSI_SGR_REVERSE            = 7
+	_ANSI_SGR_INVISIBLE         = 8
+	_ANSI_SGR_LINETHROUGH       = 9
+	_ANSI_SGR_FONT_00           = 10
+	_ANSI_SGR_FONT_01           = 11
+	_ANSI_SGR_FONT_02           = 12
+	_ANSI_SGR_FONT_03           = 13
+	_ANSI_SGR_FONT_04           = 14
+	_ANSI_SGR_FONT_05           = 15
+	_ANSI_SGR_FONT_06           = 16
+	_ANSI_SGR_FONT_07           = 17
+	_ANSI_SGR_FONT_08           = 18
+	_ANSI_SGR_FONT_09           = 19
+	_ANSI_SGR_FONT_10           = 20
+	_ANSI_SGR_DOUBLEUNDERLINE   = 21
+	ANSI_SGR_BOLD_DIM_OFF       = 22
+	_ANSI_SGR_ITALIC_OFF        = 23
+	ANSI_SGR_UNDERLINE_OFF      = 24
+	_ANSI_SGR_BLINK_OFF         = 25
+	_ANSI_SGR_RESERVED_00       = 26
+	ANSI_SGR_REVERSE_OFF        = 27
+	_ANSI_SGR_INVISIBLE_OFF     = 28
+	_ANSI_SGR_LINETHROUGH_OFF   = 29
+	ANSI_SGR_FOREGROUND_BLACK   = 30
+	ANSI_SGR_FOREGROUND_RED     = 31
+	ANSI_SGR_FOREGROUND_GREEN   = 32
+	ANSI_SGR_FOREGROUND_YELLOW  = 33
+	ANSI_SGR_FOREGROUND_BLUE    = 34
+	ANSI_SGR_FOREGROUND_MAGENTA = 35
+	ANSI_SGR_FOREGROUND_CYAN    = 36
+	ANSI_SGR_FOREGROUND_WHITE   = 37
+	_ANSI_SGR_RESERVED_01       = 38
+	ANSI_SGR_FOREGROUND_DEFAULT = 39
+	ANSI_SGR_BACKGROUND_BLACK   = 40
+	ANSI_SGR_BACKGROUND_RED     = 41
+	ANSI_SGR_BACKGROUND_GREEN   = 42
+	ANSI_SGR_BACKGROUND_YELLOW  = 43
+	ANSI_SGR_BACKGROUND_BLUE    = 44
+	ANSI_SGR_BACKGROUND_MAGENTA = 45
+	ANSI_SGR_BACKGROUND_CYAN    = 46
+	ANSI_SGR_BACKGROUND_WHITE   = 47
+	_ANSI_SGR_RESERVED_02       = 48
+	ANSI_SGR_BACKGROUND_DEFAULT = 49
+	// 50 - 65: Unsupported
+
+	ANSI_MAX_CMD_LENGTH = 4096
+
+	MAX_INPUT_EVENTS = 128
+	DEFAULT_WIDTH    = 80
+	DEFAULT_HEIGHT   = 24
+
+	ANSI_BEL              = 0x07
+	ANSI_BACKSPACE        = 0x08
+	ANSI_TAB              = 0x09
+	ANSI_LINE_FEED        = 0x0A
+	ANSI_VERTICAL_TAB     = 0x0B
+	ANSI_FORM_FEED        = 0x0C
+	ANSI_CARRIAGE_RETURN  = 0x0D
+	ANSI_ESCAPE_PRIMARY   = 0x1B
+	ANSI_ESCAPE_SECONDARY = 0x5B
+	ANSI_OSC_STRING_ENTRY = 0x5D
+	ANSI_COMMAND_FIRST    = 0x40
+	ANSI_COMMAND_LAST     = 0x7E
+	DCS_ENTRY             = 0x90
+	CSI_ENTRY             = 0x9B
+	OSC_STRING            = 0x9D
+	ANSI_PARAMETER_SEP    = ";"
+	ANSI_CMD_G0           = '('
+	ANSI_CMD_G1           = ')'
+	ANSI_CMD_G2           = '*'
+	ANSI_CMD_G3           = '+'
+	ANSI_CMD_DECPNM       = '>'
+	ANSI_CMD_DECPAM       = '='
+	ANSI_CMD_OSC          = ']'
+	ANSI_CMD_STR_TERM     = '\\'
+
+	KEY_CONTROL_PARAM_2 = ";2"
+	KEY_CONTROL_PARAM_3 = ";3"
+	KEY_CONTROL_PARAM_4 = ";4"
+	KEY_CONTROL_PARAM_5 = ";5"
+	KEY_CONTROL_PARAM_6 = ";6"
+	KEY_CONTROL_PARAM_7 = ";7"
+	KEY_CONTROL_PARAM_8 = ";8"
+	KEY_ESC_CSI         = "\x1B["
+	KEY_ESC_N           = "\x1BN"
+	KEY_ESC_O           = "\x1BO"
+
+	FILL_CHARACTER = ' '
+)
+
+func getByteRange(start byte, end byte) []byte {
+	bytes := make([]byte, 0, 32)
+	for i := start; i <= end; i++ {
+		bytes = append(bytes, byte(i))
+	}
+
+	return bytes
+}
+
+var toGroundBytes = getToGroundBytes()
+var executors = getExecuteBytes()
+
+// SPACE		  20+A0 hex  Always and everywhere a blank space
+// Intermediate	  20-2F hex   !"#$%&'()*+,-./
+var intermeds = getByteRange(0x20, 0x2F)
+
+// Parameters	  30-3F hex  0123456789:;<=>?
+// CSI Parameters 30-39, 3B hex 0123456789;
+var csiParams = getByteRange(0x30, 0x3F)
+
+var csiCollectables = append(getByteRange(0x30, 0x39), getByteRange(0x3B, 0x3F)...)
+
+// Uppercase	  40-5F hex  @ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_
+var upperCase = getByteRange(0x40, 0x5F)
+
+// Lowercase	  60-7E hex  `abcdefghijlkmnopqrstuvwxyz{|}~
+var lowerCase = getByteRange(0x60, 0x7E)
+
+// Alphabetics	  40-7E hex  (all of upper and lower case)
+var alphabetics = append(upperCase, lowerCase...)
+
+var printables = getByteRange(0x20, 0x7F)
+
+var escapeIntermediateToGroundBytes = getByteRange(0x30, 0x7E)
+var escapeToGroundBytes = getEscapeToGroundBytes()
+
+// See http://www.vt100.net/emu/vt500_parser.png for description of the complex
+// byte ranges below
+
+func getEscapeToGroundBytes() []byte {
+	escapeToGroundBytes := getByteRange(0x30, 0x4F)
+	escapeToGroundBytes = append(escapeToGroundBytes, getByteRange(0x51, 0x57)...)
+	escapeToGroundBytes = append(escapeToGroundBytes, 0x59)
+	escapeToGroundBytes = append(escapeToGroundBytes, 0x5A)
+	escapeToGroundBytes = append(escapeToGroundBytes, 0x5C)
+	escapeToGroundBytes = append(escapeToGroundBytes, getByteRange(0x60, 0x7E)...)
+	return escapeToGroundBytes
+}
+
+func getExecuteBytes() []byte {
+	executeBytes := getByteRange(0x00, 0x17)
+	executeBytes = append(executeBytes, 0x19)
+	executeBytes = append(executeBytes, getByteRange(0x1C, 0x1F)...)
+	return executeBytes
+}
+
+func getToGroundBytes() []byte {
+	groundBytes := []byte{0x18}
+	groundBytes = append(groundBytes, 0x1A)
+	groundBytes = append(groundBytes, getByteRange(0x80, 0x8F)...)
+	groundBytes = append(groundBytes, getByteRange(0x91, 0x97)...)
+	groundBytes = append(groundBytes, 0x99)
+	groundBytes = append(groundBytes, 0x9A)
+	groundBytes = append(groundBytes, 0x9C)
+	return groundBytes
+}
+
+// Delete		     7F hex  Always and everywhere ignored
+// C1 Control	  80-9F hex  32 additional control characters
+// G1 Displayable A1-FE hex  94 additional displayable characters
+// Special		  A0+FF hex  Same as SPACE and DELETE
@@ -0,0 +1,7 @@
+package ansiterm
+
+type ansiContext struct {
+	currentChar byte
+	paramBuffer []byte
+	interBuffer []byte
+}
@@ -0,0 +1,49 @@
+package ansiterm
+
+type csiEntryState struct {
+	baseState
+}
+
+func (csiState csiEntryState) Handle(b byte) (s state, e error) {
+	csiState.parser.logf("CsiEntry::Handle %#x", b)
+
+	nextState, err := csiState.baseState.Handle(b)
+	if nextState != nil || err != nil {
+		return nextState, err
+	}
+
+	switch {
+	case sliceContains(alphabetics, b):
+		return csiState.parser.ground, nil
+	case sliceContains(csiCollectables, b):
+		return csiState.parser.csiParam, nil
+	case sliceContains(executors, b):
+		return csiState, csiState.parser.execute()
+	}
+
+	return csiState, nil
+}
+
+func (csiState csiEntryState) Transition(s state) error {
+	csiState.parser.logf("CsiEntry::Transition %s --> %s", csiState.Name(), s.Name())
+	csiState.baseState.Transition(s)
+
+	switch s {
+	case csiState.parser.ground:
+		return csiState.parser.csiDispatch()
+	case csiState.parser.csiParam:
+		switch {
+		case sliceContains(csiParams, csiState.parser.context.currentChar):
+			csiState.parser.collectParam()
+		case sliceContains(intermeds, csiState.parser.context.currentChar):
+			csiState.parser.collectInter()
+		}
+	}
+
+	return nil
+}
+
+func (csiState csiEntryState) Enter() error {
+	csiState.parser.clear()
+	return nil
+}
@@ -0,0 +1,38 @@
+package ansiterm
+
+type csiParamState struct {
+	baseState
+}
+
+func (csiState csiParamState) Handle(b byte) (s state, e error) {
+	csiState.parser.logf("CsiParam::Handle %#x", b)
+
+	nextState, err := csiState.baseState.Handle(b)
+	if nextState != nil || err != nil {
+		return nextState, err
+	}
+
+	switch {
+	case sliceContains(alphabetics, b):
+		return csiState.parser.ground, nil
+	case sliceContains(csiCollectables, b):
+		csiState.parser.collectParam()
+		return csiState, nil
+	case sliceContains(executors, b):
+		return csiState, csiState.parser.execute()
+	}
+
+	return csiState, nil
+}
+
+func (csiState csiParamState) Transition(s state) error {
+	csiState.parser.logf("CsiParam::Transition %s --> %s", csiState.Name(), s.Name())
+	csiState.baseState.Transition(s)
+
+	switch s {
+	case csiState.parser.ground:
+		return csiState.parser.csiDispatch()
+	}
+
+	return nil
+}
@@ -0,0 +1,36 @@
+package ansiterm
+
+type escapeIntermediateState struct {
+	baseState
+}
+
+func (escState escapeIntermediateState) Handle(b byte) (s state, e error) {
+	escState.parser.logf("escapeIntermediateState::Handle %#x", b)
+	nextState, err := escState.baseState.Handle(b)
+	if nextState != nil || err != nil {
+		return nextState, err
+	}
+
+	switch {
+	case sliceContains(intermeds, b):
+		return escState, escState.parser.collectInter()
+	case sliceContains(executors, b):
+		return escState, escState.parser.execute()
+	case sliceContains(escapeIntermediateToGroundBytes, b):
+		return escState.parser.ground, nil
+	}
+
+	return escState, nil
+}
+
+func (escState escapeIntermediateState) Transition(s state) error {
+	escState.parser.logf("escapeIntermediateState::Transition %s --> %s", escState.Name(), s.Name())
+	escState.baseState.Transition(s)
+
+	switch s {
+	case escState.parser.ground:
+		return escState.parser.escDispatch()
+	}
+
+	return nil
+}
@@ -0,0 +1,47 @@
+package ansiterm
+
+type escapeState struct {
+	baseState
+}
+
+func (escState escapeState) Handle(b byte) (s state, e error) {
+	escState.parser.logf("escapeState::Handle %#x", b)
+	nextState, err := escState.baseState.Handle(b)
+	if nextState != nil || err != nil {
+		return nextState, err
+	}
+
+	switch {
+	case b == ANSI_ESCAPE_SECONDARY:
+		return escState.parser.csiEntry, nil
+	case b == ANSI_OSC_STRING_ENTRY:
+		return escState.parser.oscString, nil
+	case sliceContains(executors, b):
+		return escState, escState.parser.execute()
+	case sliceContains(escapeToGroundBytes, b):
+		return escState.parser.ground, nil
+	case sliceContains(intermeds, b):
+		return escState.parser.escapeIntermediate, nil
+	}
+
+	return escState, nil
+}
+
+func (escState escapeState) Transition(s state) error {
+	escState.parser.logf("Escape::Transition %s --> %s", escState.Name(), s.Name())
+	escState.baseState.Transition(s)
+
+	switch s {
+	case escState.parser.ground:
+		return escState.parser.escDispatch()
+	case escState.parser.escapeIntermediate:
+		return escState.parser.collectInter()
+	}
+
+	return nil
+}
+
+func (escState escapeState) Enter() error {
+	escState.parser.clear()
+	return nil
+}
@@ -0,0 +1,90 @@
+package ansiterm
+
+type AnsiEventHandler interface {
+	// Print
+	Print(b byte) error
+
+	// Execute C0 commands
+	Execute(b byte) error
+
+	// CUrsor Up
+	CUU(int) error
+
+	// CUrsor Down
+	CUD(int) error
+
+	// CUrsor Forward
+	CUF(int) error
+
+	// CUrsor Backward
+	CUB(int) error
+
+	// Cursor to Next Line
+	CNL(int) error
+
+	// Cursor to Previous Line
+	CPL(int) error
+
+	// Cursor Horizontal position Absolute
+	CHA(int) error
+
+	// Vertical line Position Absolute
+	VPA(int) error
+
+	// CUrsor Position
+	CUP(int, int) error
+
+	// Horizontal and Vertical Position (depends on PUM)
+	HVP(int, int) error
+
+	// Text Cursor Enable Mode
+	DECTCEM(bool) error
+
+	// Origin Mode
+	DECOM(bool) error
+
+	// 132 Column Mode
+	DECCOLM(bool) error
+
+	// Erase in Display
+	ED(int) error
+
+	// Erase in Line
+	EL(int) error
+
+	// Insert Line
+	IL(int) error
+
+	// Delete Line
+	DL(int) error
+
+	// Insert Character
+	ICH(int) error
+
+	// Delete Character
+	DCH(int) error
+
+	// Set Graphics Rendition
+	SGR([]int) error
+
+	// Pan Down
+	SU(int) error
+
+	// Pan Up
+	SD(int) error
+
+	// Device Attributes
+	DA([]string) error
+
+	// Set Top and Bottom Margins
+	DECSTBM(int, int) error
+
+	// Index
+	IND() error
+
+	// Reverse Index
+	RI() error
+
+	// Flush updates from previous commands
+	Flush() error
+}
@@ -0,0 +1,24 @@
+package ansiterm
+
+type groundState struct {
+	baseState
+}
+
+func (gs groundState) Handle(b byte) (s state, e error) {
+	gs.parser.context.currentChar = b
+
+	nextState, err := gs.baseState.Handle(b)
+	if nextState != nil || err != nil {
+		return nextState, err
+	}
+
+	switch {
+	case sliceContains(printables, b):
+		return gs, gs.parser.print()
+
+	case sliceContains(executors, b):
+		return gs, gs.parser.execute()
+	}
+
+	return gs, nil
+}
@@ -0,0 +1,31 @@
+package ansiterm
+
+type oscStringState struct {
+	baseState
+}
+
+func (oscState oscStringState) Handle(b byte) (s state, e error) {
+	oscState.parser.logf("OscString::Handle %#x", b)
+	nextState, err := oscState.baseState.Handle(b)
+	if nextState != nil || err != nil {
+		return nextState, err
+	}
+
+	switch {
+	case isOscStringTerminator(b):
+		return oscState.parser.ground, nil
+	}
+
+	return oscState, nil
+}
+
+// See below for OSC string terminators for linux
+// http://man7.org/linux/man-pages/man4/console_codes.4.html
+func isOscStringTerminator(b byte) bool {
+
+	if b == ANSI_BEL || b == 0x5C {
+		return true
+	}
+
+	return false
+}
@@ -0,0 +1,151 @@
+package ansiterm
+
+import (
+	"errors"
+	"log"
+	"os"
+)
+
+type AnsiParser struct {
+	currState          state
+	eventHandler       AnsiEventHandler
+	context            *ansiContext
+	csiEntry           state
+	csiParam           state
+	dcsEntry           state
+	escape             state
+	escapeIntermediate state
+	error              state
+	ground             state
+	oscString          state
+	stateMap           []state
+
+	logf func(string, ...interface{})
+}
+
+type Option func(*AnsiParser)
+
+func WithLogf(f func(string, ...interface{})) Option {
+	return func(ap *AnsiParser) {
+		ap.logf = f
+	}
+}
+
+func CreateParser(initialState string, evtHandler AnsiEventHandler, opts ...Option) *AnsiParser {
+	ap := &AnsiParser{
+		eventHandler: evtHandler,
+		context:      &ansiContext{},
+	}
+	for _, o := range opts {
+		o(ap)
+	}
+
+	if isDebugEnv := os.Getenv(LogEnv); isDebugEnv == "1" {
+		logFile, _ := os.Create("ansiParser.log")
+		logger := log.New(logFile, "", log.LstdFlags)
+		if ap.logf != nil {
+			l := ap.logf
+			ap.logf = func(s string, v ...interface{}) {
+				l(s, v...)
+				logger.Printf(s, v...)
+			}
+		} else {
+			ap.logf = logger.Printf
+		}
+	}
+
+	if ap.logf == nil {
+		ap.logf = func(string, ...interface{}) {}
+	}
+
+	ap.csiEntry = csiEntryState{baseState{name: "CsiEntry", parser: ap}}
+	ap.csiParam = csiParamState{baseState{name: "CsiParam", parser: ap}}
+	ap.dcsEntry = dcsEntryState{baseState{name: "DcsEntry", parser: ap}}
+	ap.escape = escapeState{baseState{name: "Escape", parser: ap}}
+	ap.escapeIntermediate = escapeIntermediateState{baseState{name: "EscapeIntermediate", parser: ap}}
+	ap.error = errorState{baseState{name: "Error", parser: ap}}
+	ap.ground = groundState{baseState{name: "Ground", parser: ap}}
+	ap.oscString = oscStringState{baseState{name: "OscString", parser: ap}}
+
+	ap.stateMap = []state{
+		ap.csiEntry,
+		ap.csiParam,
+		ap.dcsEntry,
+		ap.escape,
+		ap.escapeIntermediate,
+		ap.error,
+		ap.ground,
+		ap.oscString,
+	}
+
+	ap.currState = getState(initialState, ap.stateMap)
+
+	ap.logf("CreateParser: parser %p", ap)
+	return ap
+}
+
+func getState(name string, states []state) state {
+	for _, el := range states {
+		if el.Name() == name {
+			return el
+		}
+	}
+
+	return nil
+}
+
+func (ap *AnsiParser) Parse(bytes []byte) (int, error) {
+	for i, b := range bytes {
+		if err := ap.handle(b); err != nil {
+			return i, err
+		}
+	}
+
+	return len(bytes), ap.eventHandler.Flush()
+}
+
+func (ap *AnsiParser) handle(b byte) error {
+	ap.context.currentChar = b
+	newState, err := ap.currState.Handle(b)
+	if err != nil {
+		return err
+	}
+
+	if newState == nil {
+		ap.logf("WARNING: newState is nil")
+		return errors.New("New state of 'nil' is invalid.")
+	}
+
+	if newState != ap.currState {
+		if err := ap.changeState(newState); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (ap *AnsiParser) changeState(newState state) error {
+	ap.logf("ChangeState %s --> %s", ap.currState.Name(), newState.Name())
+
+	// Exit old state
+	if err := ap.currState.Exit(); err != nil {
+		ap.logf("Exit state '%s' failed with : '%v'", ap.currState.Name(), err)
+		return err
+	}
+
+	// Perform transition action
+	if err := ap.currState.Transition(newState); err != nil {
+		ap.logf("Transition from '%s' to '%s' failed with: '%v'", ap.currState.Name(), newState.Name, err)
+		return err
+	}
+
+	// Enter new state
+	if err := newState.Enter(); err != nil {
+		ap.logf("Enter state '%s' failed with: '%v'", newState.Name(), err)
+		return err
+	}
+
+	ap.currState = newState
+	return nil
+}
@@ -0,0 +1,99 @@
+package ansiterm
+
+import (
+	"strconv"
+)
+
+func parseParams(bytes []byte) ([]string, error) {
+	paramBuff := make([]byte, 0, 0)
+	params := []string{}
+
+	for _, v := range bytes {
+		if v == ';' {
+			if len(paramBuff) > 0 {
+				// Completed parameter, append it to the list
+				s := string(paramBuff)
+				params = append(params, s)
+				paramBuff = make([]byte, 0, 0)
+			}
+		} else {
+			paramBuff = append(paramBuff, v)
+		}
+	}
+
+	// Last parameter may not be terminated with ';'
+	if len(paramBuff) > 0 {
+		s := string(paramBuff)
+		params = append(params, s)
+	}
+
+	return params, nil
+}
+
+func parseCmd(context ansiContext) (string, error) {
+	return string(context.currentChar), nil
+}
+
+func getInt(params []string, dflt int) int {
+	i := getInts(params, 1, dflt)[0]
+	return i
+}
+
+func getInts(params []string, minCount int, dflt int) []int {
+	ints := []int{}
+
+	for _, v := range params {
+		i, _ := strconv.Atoi(v)
+		// Zero is mapped to the default value in VT100.
+		if i == 0 {
+			i = dflt
+		}
+		ints = append(ints, i)
+	}
+
+	if len(ints) < minCount {
+		remaining := minCount - len(ints)
+		for i := 0; i < remaining; i++ {
+			ints = append(ints, dflt)
+		}
+	}
+
+	return ints
+}
+
+func (ap *AnsiParser) modeDispatch(param string, set bool) error {
+	switch param {
+	case "?3":
+		return ap.eventHandler.DECCOLM(set)
+	case "?6":
+		return ap.eventHandler.DECOM(set)
+	case "?25":
+		return ap.eventHandler.DECTCEM(set)
+	}
+	return nil
+}
+
+func (ap *AnsiParser) hDispatch(params []string) error {
+	if len(params) == 1 {
+		return ap.modeDispatch(params[0], true)
+	}
+
+	return nil
+}
+
+func (ap *AnsiParser) lDispatch(params []string) error {
+	if len(params) == 1 {
+		return ap.modeDispatch(params[0], false)
+	}
+
+	return nil
+}
+
+func getEraseParam(params []string) int {
+	param := getInt(params, 0)
+	if param < 0 || 3 < param {
+		param = 0
+	}
+
+	return param
+}
@@ -0,0 +1,119 @@
+package ansiterm
+
+func (ap *AnsiParser) collectParam() error {
+	currChar := ap.context.currentChar
+	ap.logf("collectParam %#x", currChar)
+	ap.context.paramBuffer = append(ap.context.paramBuffer, currChar)
+	return nil
+}
+
+func (ap *AnsiParser) collectInter() error {
+	currChar := ap.context.currentChar
+	ap.logf("collectInter %#x", currChar)
+	ap.context.paramBuffer = append(ap.context.interBuffer, currChar)
+	return nil
+}
+
+func (ap *AnsiParser) escDispatch() error {
+	cmd, _ := parseCmd(*ap.context)
+	intermeds := ap.context.interBuffer
+	ap.logf("escDispatch currentChar: %#x", ap.context.currentChar)
+	ap.logf("escDispatch: %v(%v)", cmd, intermeds)
+
+	switch cmd {
+	case "D": // IND
+		return ap.eventHandler.IND()
+	case "E": // NEL, equivalent to CRLF
+		err := ap.eventHandler.Execute(ANSI_CARRIAGE_RETURN)
+		if err == nil {
+			err = ap.eventHandler.Execute(ANSI_LINE_FEED)
+		}
+		return err
+	case "M": // RI
+		return ap.eventHandler.RI()
+	}
+
+	return nil
+}
+
+func (ap *AnsiParser) csiDispatch() error {
+	cmd, _ := parseCmd(*ap.context)
+	params, _ := parseParams(ap.context.paramBuffer)
+	ap.logf("Parsed params: %v with length: %d", params, len(params))
+
+	ap.logf("csiDispatch: %v(%v)", cmd, params)
+
+	switch cmd {
+	case "@":
+		return ap.eventHandler.ICH(getInt(params, 1))
+	case "A":
+		return ap.eventHandler.CUU(getInt(params, 1))
+	case "B":
+		return ap.eventHandler.CUD(getInt(params, 1))
+	case "C":
+		return ap.eventHandler.CUF(getInt(params, 1))
+	case "D":
+		return ap.eventHandler.CUB(getInt(params, 1))
+	case "E":
+		return ap.eventHandler.CNL(getInt(params, 1))
+	case "F":
+		return ap.eventHandler.CPL(getInt(params, 1))
+	case "G":
+		return ap.eventHandler.CHA(getInt(params, 1))
+	case "H":
+		ints := getInts(params, 2, 1)
+		x, y := ints[0], ints[1]
+		return ap.eventHandler.CUP(x, y)
+	case "J":
+		param := getEraseParam(params)
+		return ap.eventHandler.ED(param)
+	case "K":
+		param := getEraseParam(params)
+		return ap.eventHandler.EL(param)
+	case "L":
+		return ap.eventHandler.IL(getInt(params, 1))
+	case "M":
+		return ap.eventHandler.DL(getInt(params, 1))
+	case "P":
+		return ap.eventHandler.DCH(getInt(params, 1))
+	case "S":
+		return ap.eventHandler.SU(getInt(params, 1))
+	case "T":
+		return ap.eventHandler.SD(getInt(params, 1))
+	case "c":
+		return ap.eventHandler.DA(params)
+	case "d":
+		return ap.eventHandler.VPA(getInt(params, 1))
+	case "f":
+		ints := getInts(params, 2, 1)
+		x, y := ints[0], ints[1]
+		return ap.eventHandler.HVP(x, y)
+	case "h":
+		return ap.hDispatch(params)
+	case "l":
+		return ap.lDispatch(params)
+	case "m":
+		return ap.eventHandler.SGR(getInts(params, 1, 0))
+	case "r":
+		ints := getInts(params, 2, 1)
+		top, bottom := ints[0], ints[1]
+		return ap.eventHandler.DECSTBM(top, bottom)
+	default:
+		ap.logf("ERROR: Unsupported CSI command: '%s', with full context:  %v", cmd, ap.context)
+		return nil
+	}
+
+}
+
+func (ap *AnsiParser) print() error {
+	return ap.eventHandler.Print(ap.context.currentChar)
+}
+
+func (ap *AnsiParser) clear() error {
+	ap.context = &ansiContext{}
+	return nil
+}
+
+func (ap *AnsiParser) execute() error {
+	return ap.eventHandler.Execute(ap.context.currentChar)
+}
@@ -0,0 +1,71 @@
+package ansiterm
+
+type stateID int
+
+type state interface {
+	Enter() error
+	Exit() error
+	Handle(byte) (state, error)
+	Name() string
+	Transition(state) error
+}
+
+type baseState struct {
+	name   string
+	parser *AnsiParser
+}
+
+func (base baseState) Enter() error {
+	return nil
+}
+
+func (base baseState) Exit() error {
+	return nil
+}
+
+func (base baseState) Handle(b byte) (s state, e error) {
+
+	switch {
+	case b == CSI_ENTRY:
+		return base.parser.csiEntry, nil
+	case b == DCS_ENTRY:
+		return base.parser.dcsEntry, nil
+	case b == ANSI_ESCAPE_PRIMARY:
+		return base.parser.escape, nil
+	case b == OSC_STRING:
+		return base.parser.oscString, nil
+	case sliceContains(toGroundBytes, b):
+		return base.parser.ground, nil
+	}
+
+	return nil, nil
+}
+
+func (base baseState) Name() string {
+	return base.name
+}
+
+func (base baseState) Transition(s state) error {
+	if s == base.parser.ground {
+		execBytes := []byte{0x18}
+		execBytes = append(execBytes, 0x1A)
+		execBytes = append(execBytes, getByteRange(0x80, 0x8F)...)
+		execBytes = append(execBytes, getByteRange(0x91, 0x97)...)
+		execBytes = append(execBytes, 0x99)
+		execBytes = append(execBytes, 0x9A)
+
+		if sliceContains(execBytes, base.parser.context.currentChar) {
+			return base.parser.execute()
+		}
+	}
+
+	return nil
+}
+
+type dcsEntryState struct {
+	baseState
+}
+
+type errorState struct {
+	baseState
+}
@@ -0,0 +1,21 @@
+package ansiterm
+
+import (
+	"strconv"
+)
+
+func sliceContains(bytes []byte, b byte) bool {
+	for _, v := range bytes {
+		if v == b {
+			return true
+		}
+	}
+
+	return false
+}
+
+func convertBytesToInteger(bytes []byte) int {
+	s := string(bytes)
+	i, _ := strconv.Atoi(s)
+	return i
+}
@@ -0,0 +1,182 @@
+// +build windows
+
+package winterm
+
+import (
+	"fmt"
+	"os"
+	"strconv"
+	"strings"
+	"syscall"
+
+	"github.com/Azure/go-ansiterm"
+)
+
+// Windows keyboard constants
+// See https://msdn.microsoft.com/en-us/library/windows/desktop/dd375731(v=vs.85).aspx.
+const (
+	VK_PRIOR    = 0x21 // PAGE UP key
+	VK_NEXT     = 0x22 // PAGE DOWN key
+	VK_END      = 0x23 // END key
+	VK_HOME     = 0x24 // HOME key
+	VK_LEFT     = 0x25 // LEFT ARROW key
+	VK_UP       = 0x26 // UP ARROW key
+	VK_RIGHT    = 0x27 // RIGHT ARROW key
+	VK_DOWN     = 0x28 // DOWN ARROW key
+	VK_SELECT   = 0x29 // SELECT key
+	VK_PRINT    = 0x2A // PRINT key
+	VK_EXECUTE  = 0x2B // EXECUTE key
+	VK_SNAPSHOT = 0x2C // PRINT SCREEN key
+	VK_INSERT   = 0x2D // INS key
+	VK_DELETE   = 0x2E // DEL key
+	VK_HELP     = 0x2F // HELP key
+	VK_F1       = 0x70 // F1 key
+	VK_F2       = 0x71 // F2 key
+	VK_F3       = 0x72 // F3 key
+	VK_F4       = 0x73 // F4 key
+	VK_F5       = 0x74 // F5 key
+	VK_F6       = 0x75 // F6 key
+	VK_F7       = 0x76 // F7 key
+	VK_F8       = 0x77 // F8 key
+	VK_F9       = 0x78 // F9 key
+	VK_F10      = 0x79 // F10 key
+	VK_F11      = 0x7A // F11 key
+	VK_F12      = 0x7B // F12 key
+
+	RIGHT_ALT_PRESSED  = 0x0001
+	LEFT_ALT_PRESSED   = 0x0002
+	RIGHT_CTRL_PRESSED = 0x0004
+	LEFT_CTRL_PRESSED  = 0x0008
+	SHIFT_PRESSED      = 0x0010
+	NUMLOCK_ON         = 0x0020
+	SCROLLLOCK_ON      = 0x0040
+	CAPSLOCK_ON        = 0x0080
+	ENHANCED_KEY       = 0x0100
+)
+
+type ansiCommand struct {
+	CommandBytes []byte
+	Command      string
+	Parameters   []string
+	IsSpecial    bool
+}
+
+func newAnsiCommand(command []byte) *ansiCommand {
+
+	if isCharacterSelectionCmdChar(command[1]) {
+		// Is Character Set Selection commands
+		return &ansiCommand{
+			CommandBytes: command,
+			Command:      string(command),
+			IsSpecial:    true,
+		}
+	}
+
+	// last char is command character
+	lastCharIndex := len(command) - 1
+
+	ac := &ansiCommand{
+		CommandBytes: command,
+		Command:      string(command[lastCharIndex]),
+		IsSpecial:    false,
+	}
+
+	// more than a single escape
+	if lastCharIndex != 0 {
+		start := 1
+		// skip if double char escape sequence
+		if command[0] == ansiterm.ANSI_ESCAPE_PRIMARY && command[1] == ansiterm.ANSI_ESCAPE_SECONDARY {
+			start++
+		}
+		// convert this to GetNextParam method
+		ac.Parameters = strings.Split(string(command[start:lastCharIndex]), ansiterm.ANSI_PARAMETER_SEP)
+	}
+
+	return ac
+}
+
+func (ac *ansiCommand) paramAsSHORT(index int, defaultValue int16) int16 {
+	if index < 0 || index >= len(ac.Parameters) {
+		return defaultValue
+	}
+
+	param, err := strconv.ParseInt(ac.Parameters[index], 10, 16)
+	if err != nil {
+		return defaultValue
+	}
+
+	return int16(param)
+}
+
+func (ac *ansiCommand) String() string {
+	return fmt.Sprintf("0x%v \"%v\" (\"%v\")",
+		bytesToHex(ac.CommandBytes),
+		ac.Command,
+		strings.Join(ac.Parameters, "\",\""))
+}
+
+// isAnsiCommandChar returns true if the passed byte falls within the range of ANSI commands.
+// See http://manpages.ubuntu.com/manpages/intrepid/man4/console_codes.4.html.
+func isAnsiCommandChar(b byte) bool {
+	switch {
+	case ansiterm.ANSI_COMMAND_FIRST <= b && b <= ansiterm.ANSI_COMMAND_LAST && b != ansiterm.ANSI_ESCAPE_SECONDARY:
+		return true
+	case b == ansiterm.ANSI_CMD_G1 || b == ansiterm.ANSI_CMD_OSC || b == ansiterm.ANSI_CMD_DECPAM || b == ansiterm.ANSI_CMD_DECPNM:
+		// non-CSI escape sequence terminator
+		return true
+	case b == ansiterm.ANSI_CMD_STR_TERM || b == ansiterm.ANSI_BEL:
+		// String escape sequence terminator
+		return true
+	}
+	return false
+}
+
+func isXtermOscSequence(command []byte, current byte) bool {
+	return (len(command) >= 2 && command[0] == ansiterm.ANSI_ESCAPE_PRIMARY && command[1] == ansiterm.ANSI_CMD_OSC && current != ansiterm.ANSI_BEL)
+}
+
+func isCharacterSelectionCmdChar(b byte) bool {
+	return (b == ansiterm.ANSI_CMD_G0 || b == ansiterm.ANSI_CMD_G1 || b == ansiterm.ANSI_CMD_G2 || b == ansiterm.ANSI_CMD_G3)
+}
+
+// bytesToHex converts a slice of bytes to a human-readable string.
+func bytesToHex(b []byte) string {
+	hex := make([]string, len(b))
+	for i, ch := range b {
+		hex[i] = fmt.Sprintf("%X", ch)
+	}
+	return strings.Join(hex, "")
+}
+
+// ensureInRange adjusts the passed value, if necessary, to ensure it is within
+// the passed min / max range.
+func ensureInRange(n int16, min int16, max int16) int16 {
+	if n < min {
+		return min
+	} else if n > max {
+		return max
+	} else {
+		return n
+	}
+}
+
+func GetStdFile(nFile int) (*os.File, uintptr) {
+	var file *os.File
+	switch nFile {
+	case syscall.STD_INPUT_HANDLE:
+		file = os.Stdin
+	case syscall.STD_OUTPUT_HANDLE:
+		file = os.Stdout
+	case syscall.STD_ERROR_HANDLE:
+		file = os.Stderr
+	default:
+		panic(fmt.Errorf("Invalid standard handle identifier: %v", nFile))
+	}
+
+	fd, err := syscall.GetStdHandle(nFile)
+	if err != nil {
+		panic(fmt.Errorf("Invalid standard handle identifier: %v -- %v", nFile, err))
+	}
+
+	return file, uintptr(fd)
+}
@@ -0,0 +1,327 @@
+// +build windows
+
+package winterm
+
+import (
+	"fmt"
+	"syscall"
+	"unsafe"
+)
+
+//===========================================================================================================
+// IMPORTANT NOTE:
+//
+//	The methods below make extensive use of the "unsafe" package to obtain the required pointers.
+//	Beginning in Go 1.3, the garbage collector may release local variables (e.g., incoming arguments, stack
+//	variables) the pointers reference *before* the API completes.
+//
+//  As a result, in those cases, the code must hint that the variables remain in active by invoking the
+//	dummy method "use" (see below). Newer versions of Go are planned to change the mechanism to no longer
+//	require unsafe pointers.
+//
+//	If you add or modify methods, ENSURE protection of local variables through the "use" builtin to inform
+//	the garbage collector the variables remain in use if:
+//
+//	-- The value is not a pointer (e.g., int32, struct)
+//	-- The value is not referenced by the method after passing the pointer to Windows
+//
+//	See http://golang.org/doc/go1.3.
+//===========================================================================================================
+
+var (
+	kernel32DLL = syscall.NewLazyDLL("kernel32.dll")
+
+	getConsoleCursorInfoProc       = kernel32DLL.NewProc("GetConsoleCursorInfo")
+	setConsoleCursorInfoProc       = kernel32DLL.NewProc("SetConsoleCursorInfo")
+	setConsoleCursorPositionProc   = kernel32DLL.NewProc("SetConsoleCursorPosition")
+	setConsoleModeProc             = kernel32DLL.NewProc("SetConsoleMode")
+	getConsoleScreenBufferInfoProc = kernel32DLL.NewProc("GetConsoleScreenBufferInfo")
+	setConsoleScreenBufferSizeProc = kernel32DLL.NewProc("SetConsoleScreenBufferSize")
+	scrollConsoleScreenBufferProc  = kernel32DLL.NewProc("ScrollConsoleScreenBufferA")
+	setConsoleTextAttributeProc    = kernel32DLL.NewProc("SetConsoleTextAttribute")
+	setConsoleWindowInfoProc       = kernel32DLL.NewProc("SetConsoleWindowInfo")
+	writeConsoleOutputProc         = kernel32DLL.NewProc("WriteConsoleOutputW")
+	readConsoleInputProc           = kernel32DLL.NewProc("ReadConsoleInputW")
+	waitForSingleObjectProc        = kernel32DLL.NewProc("WaitForSingleObject")
+)
+
+// Windows Console constants
+const (
+	// Console modes
+	// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms686033(v=vs.85).aspx.
+	ENABLE_PROCESSED_INPUT        = 0x0001
+	ENABLE_LINE_INPUT             = 0x0002
+	ENABLE_ECHO_INPUT             = 0x0004
+	ENABLE_WINDOW_INPUT           = 0x0008
+	ENABLE_MOUSE_INPUT            = 0x0010
+	ENABLE_INSERT_MODE            = 0x0020
+	ENABLE_QUICK_EDIT_MODE        = 0x0040
+	ENABLE_EXTENDED_FLAGS         = 0x0080
+	ENABLE_AUTO_POSITION          = 0x0100
+	ENABLE_VIRTUAL_TERMINAL_INPUT = 0x0200
+
+	ENABLE_PROCESSED_OUTPUT            = 0x0001
+	ENABLE_WRAP_AT_EOL_OUTPUT          = 0x0002
+	ENABLE_VIRTUAL_TERMINAL_PROCESSING = 0x0004
+	DISABLE_NEWLINE_AUTO_RETURN        = 0x0008
+	ENABLE_LVB_GRID_WORLDWIDE          = 0x0010
+
+	// Character attributes
+	// Note:
+	// -- The attributes are combined to produce various colors (e.g., Blue + Green will create Cyan).
+	//    Clearing all foreground or background colors results in black; setting all creates white.
+	// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms682088(v=vs.85).aspx#_win32_character_attributes.
+	FOREGROUND_BLUE      uint16 = 0x0001
+	FOREGROUND_GREEN     uint16 = 0x0002
+	FOREGROUND_RED       uint16 = 0x0004
+	FOREGROUND_INTENSITY uint16 = 0x0008
+	FOREGROUND_MASK      uint16 = 0x000F
+
+	BACKGROUND_BLUE      uint16 = 0x0010
+	BACKGROUND_GREEN     uint16 = 0x0020
+	BACKGROUND_RED       uint16 = 0x0040
+	BACKGROUND_INTENSITY uint16 = 0x0080
+	BACKGROUND_MASK      uint16 = 0x00F0
+
+	COMMON_LVB_MASK          uint16 = 0xFF00
+	COMMON_LVB_REVERSE_VIDEO uint16 = 0x4000
+	COMMON_LVB_UNDERSCORE    uint16 = 0x8000
+
+	// Input event types
+	// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms683499(v=vs.85).aspx.
+	KEY_EVENT                = 0x0001
+	MOUSE_EVENT              = 0x0002
+	WINDOW_BUFFER_SIZE_EVENT = 0x0004
+	MENU_EVENT               = 0x0008
+	FOCUS_EVENT              = 0x0010
+
+	// WaitForSingleObject return codes
+	WAIT_ABANDONED = 0x00000080
+	WAIT_FAILED    = 0xFFFFFFFF
+	WAIT_SIGNALED  = 0x0000000
+	WAIT_TIMEOUT   = 0x00000102
+
+	// WaitForSingleObject wait duration
+	WAIT_INFINITE       = 0xFFFFFFFF
+	WAIT_ONE_SECOND     = 1000
+	WAIT_HALF_SECOND    = 500
+	WAIT_QUARTER_SECOND = 250
+)
+
+// Windows API Console types
+// -- See https://msdn.microsoft.com/en-us/library/windows/desktop/ms682101(v=vs.85).aspx for Console specific types (e.g., COORD)
+// -- See https://msdn.microsoft.com/en-us/library/aa296569(v=vs.60).aspx for comments on alignment
+type (
+	CHAR_INFO struct {
+		UnicodeChar uint16
+		Attributes  uint16
+	}
+
+	CONSOLE_CURSOR_INFO struct {
+		Size    uint32
+		Visible int32
+	}
+
+	CONSOLE_SCREEN_BUFFER_INFO struct {
+		Size              COORD
+		CursorPosition    COORD
+		Attributes        uint16
+		Window            SMALL_RECT
+		MaximumWindowSize COORD
+	}
+
+	COORD struct {
+		X int16
+		Y int16
+	}
+
+	SMALL_RECT struct {
+		Left   int16
+		Top    int16
+		Right  int16
+		Bottom int16
+	}
+
+	// INPUT_RECORD is a C/C++ union of which KEY_EVENT_RECORD is one case, it is also the largest
+	// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms683499(v=vs.85).aspx.
+	INPUT_RECORD struct {
+		EventType uint16
+		KeyEvent  KEY_EVENT_RECORD
+	}
+
+	KEY_EVENT_RECORD struct {
+		KeyDown         int32
+		RepeatCount     uint16
+		VirtualKeyCode  uint16
+		VirtualScanCode uint16
+		UnicodeChar     uint16
+		ControlKeyState uint32
+	}
+
+	WINDOW_BUFFER_SIZE struct {
+		Size COORD
+	}
+)
+
+// boolToBOOL converts a Go bool into a Windows int32.
+func boolToBOOL(f bool) int32 {
+	if f {
+		return int32(1)
+	} else {
+		return int32(0)
+	}
+}
+
+// GetConsoleCursorInfo retrieves information about the size and visiblity of the console cursor.
+// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms683163(v=vs.85).aspx.
+func GetConsoleCursorInfo(handle uintptr, cursorInfo *CONSOLE_CURSOR_INFO) error {
+	r1, r2, err := getConsoleCursorInfoProc.Call(handle, uintptr(unsafe.Pointer(cursorInfo)), 0)
+	return checkError(r1, r2, err)
+}
+
+// SetConsoleCursorInfo sets the size and visiblity of the console cursor.
+// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms686019(v=vs.85).aspx.
+func SetConsoleCursorInfo(handle uintptr, cursorInfo *CONSOLE_CURSOR_INFO) error {
+	r1, r2, err := setConsoleCursorInfoProc.Call(handle, uintptr(unsafe.Pointer(cursorInfo)), 0)
+	return checkError(r1, r2, err)
+}
+
+// SetConsoleCursorPosition location of the console cursor.
+// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms686025(v=vs.85).aspx.
+func SetConsoleCursorPosition(handle uintptr, coord COORD) error {
+	r1, r2, err := setConsoleCursorPositionProc.Call(handle, coordToPointer(coord))
+	use(coord)
+	return checkError(r1, r2, err)
+}
+
+// GetConsoleMode gets the console mode for given file descriptor
+// See http://msdn.microsoft.com/en-us/library/windows/desktop/ms683167(v=vs.85).aspx.
+func GetConsoleMode(handle uintptr) (mode uint32, err error) {
+	err = syscall.GetConsoleMode(syscall.Handle(handle), &mode)
+	return mode, err
+}
+
+// SetConsoleMode sets the console mode for given file descriptor
+// See http://msdn.microsoft.com/en-us/library/windows/desktop/ms686033(v=vs.85).aspx.
+func SetConsoleMode(handle uintptr, mode uint32) error {
+	r1, r2, err := setConsoleModeProc.Call(handle, uintptr(mode), 0)
+	use(mode)
+	return checkError(r1, r2, err)
+}
+
+// GetConsoleScreenBufferInfo retrieves information about the specified console screen buffer.
+// See http://msdn.microsoft.com/en-us/library/windows/desktop/ms683171(v=vs.85).aspx.
+func GetConsoleScreenBufferInfo(handle uintptr) (*CONSOLE_SCREEN_BUFFER_INFO, error) {
+	info := CONSOLE_SCREEN_BUFFER_INFO{}
+	err := checkError(getConsoleScreenBufferInfoProc.Call(handle, uintptr(unsafe.Pointer(&info)), 0))
+	if err != nil {
+		return nil, err
+	}
+	return &info, nil
+}
+
+func ScrollConsoleScreenBuffer(handle uintptr, scrollRect SMALL_RECT, clipRect SMALL_RECT, destOrigin COORD, char CHAR_INFO) error {
+	r1, r2, err := scrollConsoleScreenBufferProc.Call(handle, uintptr(unsafe.Pointer(&scrollRect)), uintptr(unsafe.Pointer(&clipRect)), coordToPointer(destOrigin), uintptr(unsafe.Pointer(&char)))
+	use(scrollRect)
+	use(clipRect)
+	use(destOrigin)
+	use(char)
+	return checkError(r1, r2, err)
+}
+
+// SetConsoleScreenBufferSize sets the size of the console screen buffer.
+// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms686044(v=vs.85).aspx.
+func SetConsoleScreenBufferSize(handle uintptr, coord COORD) error {
+	r1, r2, err := setConsoleScreenBufferSizeProc.Call(handle, coordToPointer(coord))
+	use(coord)
+	return checkError(r1, r2, err)
+}
+
+// SetConsoleTextAttribute sets the attributes of characters written to the
+// console screen buffer by the WriteFile or WriteConsole function.
+// See http://msdn.microsoft.com/en-us/library/windows/desktop/ms686047(v=vs.85).aspx.
+func SetConsoleTextAttribute(handle uintptr, attribute uint16) error {
+	r1, r2, err := setConsoleTextAttributeProc.Call(handle, uintptr(attribute), 0)
+	use(attribute)
+	return checkError(r1, r2, err)
+}
+
+// SetConsoleWindowInfo sets the size and position of the console screen buffer's window.
+// Note that the size and location must be within and no larger than the backing console screen buffer.
+// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms686125(v=vs.85).aspx.
+func SetConsoleWindowInfo(handle uintptr, isAbsolute bool, rect SMALL_RECT) error {
+	r1, r2, err := setConsoleWindowInfoProc.Call(handle, uintptr(boolToBOOL(isAbsolute)), uintptr(unsafe.Pointer(&rect)))
+	use(isAbsolute)
+	use(rect)
+	return checkError(r1, r2, err)
+}
+
+// WriteConsoleOutput writes the CHAR_INFOs from the provided buffer to the active console buffer.
+// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms687404(v=vs.85).aspx.
+func WriteConsoleOutput(handle uintptr, buffer []CHAR_INFO, bufferSize COORD, bufferCoord COORD, writeRegion *SMALL_RECT) error {
+	r1, r2, err := writeConsoleOutputProc.Call(handle, uintptr(unsafe.Pointer(&buffer[0])), coordToPointer(bufferSize), coordToPointer(bufferCoord), uintptr(unsafe.Pointer(writeRegion)))
+	use(buffer)
+	use(bufferSize)
+	use(bufferCoord)
+	return checkError(r1, r2, err)
+}
+
+// ReadConsoleInput reads (and removes) data from the console input buffer.
+// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms684961(v=vs.85).aspx.
+func ReadConsoleInput(handle uintptr, buffer []INPUT_RECORD, count *uint32) error {
+	r1, r2, err := readConsoleInputProc.Call(handle, uintptr(unsafe.Pointer(&buffer[0])), uintptr(len(buffer)), uintptr(unsafe.Pointer(count)))
+	use(buffer)
+	return checkError(r1, r2, err)
+}
+
+// WaitForSingleObject waits for the passed handle to be signaled.
+// It returns true if the handle was signaled; false otherwise.
+// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms687032(v=vs.85).aspx.
+func WaitForSingleObject(handle uintptr, msWait uint32) (bool, error) {
+	r1, _, err := waitForSingleObjectProc.Call(handle, uintptr(uint32(msWait)))
+	switch r1 {
+	case WAIT_ABANDONED, WAIT_TIMEOUT:
+		return false, nil
+	case WAIT_SIGNALED:
+		return true, nil
+	}
+	use(msWait)
+	return false, err
+}
+
+// String helpers
+func (info CONSOLE_SCREEN_BUFFER_INFO) String() string {
+	return fmt.Sprintf("Size(%v) Cursor(%v) Window(%v) Max(%v)", info.Size, info.CursorPosition, info.Window, info.MaximumWindowSize)
+}
+
+func (coord COORD) String() string {
+	return fmt.Sprintf("%v,%v", coord.X, coord.Y)
+}
+
+func (rect SMALL_RECT) String() string {
+	return fmt.Sprintf("(%v,%v),(%v,%v)", rect.Left, rect.Top, rect.Right, rect.Bottom)
+}
+
+// checkError evaluates the results of a Windows API call and returns the error if it failed.
+func checkError(r1, r2 uintptr, err error) error {
+	// Windows APIs return non-zero to indicate success
+	if r1 != 0 {
+		return nil
+	}
+
+	// Return the error if provided, otherwise default to EINVAL
+	if err != nil {
+		return err
+	}
+	return syscall.EINVAL
+}
+
+// coordToPointer converts a COORD into a uintptr (by fooling the type system).
+func coordToPointer(c COORD) uintptr {
+	// Note: This code assumes the two SHORTs are correctly laid out; the "cast" to uint32 is just to get a pointer to pass.
+	return uintptr(*((*uint32)(unsafe.Pointer(&c))))
+}
+
+// use is a no-op, but the compiler cannot see that it is.
+// Calling use(p) ensures that p is kept live until that point.
+func use(p interface{}) {}
@@ -0,0 +1,100 @@
+// +build windows
+
+package winterm
+
+import "github.com/Azure/go-ansiterm"
+
+const (
+	FOREGROUND_COLOR_MASK = FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE
+	BACKGROUND_COLOR_MASK = BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE
+)
+
+// collectAnsiIntoWindowsAttributes modifies the passed Windows text mode flags to reflect the
+// request represented by the passed ANSI mode.
+func collectAnsiIntoWindowsAttributes(windowsMode uint16, inverted bool, baseMode uint16, ansiMode int16) (uint16, bool) {
+	switch ansiMode {
+
+	// Mode styles
+	case ansiterm.ANSI_SGR_BOLD:
+		windowsMode = windowsMode | FOREGROUND_INTENSITY
+
+	case ansiterm.ANSI_SGR_DIM, ansiterm.ANSI_SGR_BOLD_DIM_OFF:
+		windowsMode &^= FOREGROUND_INTENSITY
+
+	case ansiterm.ANSI_SGR_UNDERLINE:
+		windowsMode = windowsMode | COMMON_LVB_UNDERSCORE
+
+	case ansiterm.ANSI_SGR_REVERSE:
+		inverted = true
+
+	case ansiterm.ANSI_SGR_REVERSE_OFF:
+		inverted = false
+
+	case ansiterm.ANSI_SGR_UNDERLINE_OFF:
+		windowsMode &^= COMMON_LVB_UNDERSCORE
+
+		// Foreground colors
+	case ansiterm.ANSI_SGR_FOREGROUND_DEFAULT:
+		windowsMode = (windowsMode &^ FOREGROUND_MASK) | (baseMode & FOREGROUND_MASK)
+
+	case ansiterm.ANSI_SGR_FOREGROUND_BLACK:
+		windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK)
+
+	case ansiterm.ANSI_SGR_FOREGROUND_RED:
+		windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_RED
+
+	case ansiterm.ANSI_SGR_FOREGROUND_GREEN:
+		windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_GREEN
+
+	case ansiterm.ANSI_SGR_FOREGROUND_YELLOW:
+		windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_RED | FOREGROUND_GREEN
+
+	case ansiterm.ANSI_SGR_FOREGROUND_BLUE:
+		windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_BLUE
+
+	case ansiterm.ANSI_SGR_FOREGROUND_MAGENTA:
+		windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_RED | FOREGROUND_BLUE
+
+	case ansiterm.ANSI_SGR_FOREGROUND_CYAN:
+		windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_GREEN | FOREGROUND_BLUE
+
+	case ansiterm.ANSI_SGR_FOREGROUND_WHITE:
+		windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE
+
+		// Background colors
+	case ansiterm.ANSI_SGR_BACKGROUND_DEFAULT:
+		// Black with no intensity
+		windowsMode = (windowsMode &^ BACKGROUND_MASK) | (baseMode & BACKGROUND_MASK)
+
+	case ansiterm.ANSI_SGR_BACKGROUND_BLACK:
+		windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK)
+
+	case ansiterm.ANSI_SGR_BACKGROUND_RED:
+		windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_RED
+
+	case ansiterm.ANSI_SGR_BACKGROUND_GREEN:
+		windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_GREEN
+
+	case ansiterm.ANSI_SGR_BACKGROUND_YELLOW:
+		windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_RED | BACKGROUND_GREEN
+
+	case ansiterm.ANSI_SGR_BACKGROUND_BLUE:
+		windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_BLUE
+
+	case ansiterm.ANSI_SGR_BACKGROUND_MAGENTA:
+		windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_RED | BACKGROUND_BLUE
+
+	case ansiterm.ANSI_SGR_BACKGROUND_CYAN:
+		windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_GREEN | BACKGROUND_BLUE
+
+	case ansiterm.ANSI_SGR_BACKGROUND_WHITE:
+		windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE
+	}
+
+	return windowsMode, inverted
+}
+
+// invertAttributes inverts the foreground and background colors of a Windows attributes value
+func invertAttributes(windowsMode uint16) uint16 {
+	return (COMMON_LVB_MASK & windowsMode) | ((FOREGROUND_MASK & windowsMode) << 4) | ((BACKGROUND_MASK & windowsMode) >> 4)
+}
@@ -0,0 +1,101 @@
+// +build windows
+
+package winterm
+
+const (
+	horizontal = iota
+	vertical
+)
+
+func (h *windowsAnsiEventHandler) getCursorWindow(info *CONSOLE_SCREEN_BUFFER_INFO) SMALL_RECT {
+	if h.originMode {
+		sr := h.effectiveSr(info.Window)
+		return SMALL_RECT{
+			Top:    sr.top,
+			Bottom: sr.bottom,
+			Left:   0,
+			Right:  info.Size.X - 1,
+		}
+	} else {
+		return SMALL_RECT{
+			Top:    info.Window.Top,
+			Bottom: info.Window.Bottom,
+			Left:   0,
+			Right:  info.Size.X - 1,
+		}
+	}
+}
+
+// setCursorPosition sets the cursor to the specified position, bounded to the screen size
+func (h *windowsAnsiEventHandler) setCursorPosition(position COORD, window SMALL_RECT) error {
+	position.X = ensureInRange(position.X, window.Left, window.Right)
+	position.Y = ensureInRange(position.Y, window.Top, window.Bottom)
+	err := SetConsoleCursorPosition(h.fd, position)
+	if err != nil {
+		return err
+	}
+	h.logf("Cursor position set: (%d, %d)", position.X, position.Y)
+	return err
+}
+
+func (h *windowsAnsiEventHandler) moveCursorVertical(param int) error {
+	return h.moveCursor(vertical, param)
+}
+
+func (h *windowsAnsiEventHandler) moveCursorHorizontal(param int) error {
+	return h.moveCursor(horizontal, param)
+}
+
+func (h *windowsAnsiEventHandler) moveCursor(moveMode int, param int) error {
+	info, err := GetConsoleScreenBufferInfo(h.fd)
+	if err != nil {
+		return err
+	}
+
+	position := info.CursorPosition
+	switch moveMode {
+	case horizontal:
+		position.X += int16(param)
+	case vertical:
+		position.Y += int16(param)
+	}
+
+	if err = h.setCursorPosition(position, h.getCursorWindow(info)); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (h *windowsAnsiEventHandler) moveCursorLine(param int) error {
+	info, err := GetConsoleScreenBufferInfo(h.fd)
+	if err != nil {
+		return err
+	}
+
+	position := info.CursorPosition
+	position.X = 0
+	position.Y += int16(param)
+
+	if err = h.setCursorPosition(position, h.getCursorWindow(info)); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (h *windowsAnsiEventHandler) moveCursorColumn(param int) error {
+	info, err := GetConsoleScreenBufferInfo(h.fd)
+	if err != nil {
+		return err
+	}
+
+	position := info.CursorPosition
+	position.X = int16(param) - 1
+
+	if err = h.setCursorPosition(position, h.getCursorWindow(info)); err != nil {
+		return err
+	}
+
+	return nil
+}
@@ -0,0 +1,84 @@
+// +build windows
+
+package winterm
+
+import "github.com/Azure/go-ansiterm"
+
+func (h *windowsAnsiEventHandler) clearRange(attributes uint16, fromCoord COORD, toCoord COORD) error {
+	// Ignore an invalid (negative area) request
+	if toCoord.Y < fromCoord.Y {
+		return nil
+	}
+
+	var err error
+
+	var coordStart = COORD{}
+	var coordEnd = COORD{}
+
+	xCurrent, yCurrent := fromCoord.X, fromCoord.Y
+	xEnd, yEnd := toCoord.X, toCoord.Y
+
+	// Clear any partial initial line
+	if xCurrent > 0 {
+		coordStart.X, coordStart.Y = xCurrent, yCurrent
+		coordEnd.X, coordEnd.Y = xEnd, yCurrent
+
+		err = h.clearRect(attributes, coordStart, coordEnd)
+		if err != nil {
+			return err
+		}
+
+		xCurrent = 0
+		yCurrent += 1
+	}
+
+	// Clear intervening rectangular section
+	if yCurrent < yEnd {
+		coordStart.X, coordStart.Y = xCurrent, yCurrent
+		coordEnd.X, coordEnd.Y = xEnd, yEnd-1
+
+		err = h.clearRect(attributes, coordStart, coordEnd)
+		if err != nil {
+			return err
+		}
+
+		xCurrent = 0
+		yCurrent = yEnd
+	}
+
+	// Clear remaining partial ending line
+	coordStart.X, coordStart.Y = xCurrent, yCurrent
+	coordEnd.X, coordEnd.Y = xEnd, yEnd
+
+	err = h.clearRect(attributes, coordStart, coordEnd)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (h *windowsAnsiEventHandler) clearRect(attributes uint16, fromCoord COORD, toCoord COORD) error {
+	region := SMALL_RECT{Top: fromCoord.Y, Left: fromCoord.X, Bottom: toCoord.Y, Right: toCoord.X}
+	width := toCoord.X - fromCoord.X + 1
+	height := toCoord.Y - fromCoord.Y + 1
+	size := uint32(width) * uint32(height)
+
+	if size <= 0 {
+		return nil
+	}
+
+	buffer := make([]CHAR_INFO, size)
+
+	char := CHAR_INFO{ansiterm.FILL_CHARACTER, attributes}
+	for i := 0; i < int(size); i++ {
+		buffer[i] = char
+	}
+
+	err := WriteConsoleOutput(h.fd, buffer, COORD{X: width, Y: height}, COORD{X: 0, Y: 0}, &region)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
@@ -0,0 +1,118 @@
+// +build windows
+
+package winterm
+
+// effectiveSr gets the current effective scroll region in buffer coordinates
+func (h *windowsAnsiEventHandler) effectiveSr(window SMALL_RECT) scrollRegion {
+	top := addInRange(window.Top, h.sr.top, window.Top, window.Bottom)
+	bottom := addInRange(window.Top, h.sr.bottom, window.Top, window.Bottom)
+	if top >= bottom {
+		top = window.Top
+		bottom = window.Bottom
+	}
+	return scrollRegion{top: top, bottom: bottom}
+}
+
+func (h *windowsAnsiEventHandler) scrollUp(param int) error {
+	info, err := GetConsoleScreenBufferInfo(h.fd)
+	if err != nil {
+		return err
+	}
+
+	sr := h.effectiveSr(info.Window)
+	return h.scroll(param, sr, info)
+}
+
+func (h *windowsAnsiEventHandler) scrollDown(param int) error {
+	return h.scrollUp(-param)
+}
+
+func (h *windowsAnsiEventHandler) deleteLines(param int) error {
+	info, err := GetConsoleScreenBufferInfo(h.fd)
+	if err != nil {
+		return err
+	}
+
+	start := info.CursorPosition.Y
+	sr := h.effectiveSr(info.Window)
+	// Lines cannot be inserted or deleted outside the scrolling region.
+	if start >= sr.top && start <= sr.bottom {
+		sr.top = start
+		return h.scroll(param, sr, info)
+	} else {
+		return nil
+	}
+}
+
+func (h *windowsAnsiEventHandler) insertLines(param int) error {
+	return h.deleteLines(-param)
+}
+
+// scroll scrolls the provided scroll region by param lines. The scroll region is in buffer coordinates.
+func (h *windowsAnsiEventHandler) scroll(param int, sr scrollRegion, info *CONSOLE_SCREEN_BUFFER_INFO) error {
+	h.logf("scroll: scrollTop: %d, scrollBottom: %d", sr.top, sr.bottom)
+	h.logf("scroll: windowTop: %d, windowBottom: %d", info.Window.Top, info.Window.Bottom)
+
+	// Copy from and clip to the scroll region (full buffer width)
+	scrollRect := SMALL_RECT{
+		Top:    sr.top,
+		Bottom: sr.bottom,
+		Left:   0,
+		Right:  info.Size.X - 1,
+	}
+
+	// Origin to which area should be copied
+	destOrigin := COORD{
+		X: 0,
+		Y: sr.top - int16(param),
+	}
+
+	char := CHAR_INFO{
+		UnicodeChar: ' ',
+		Attributes:  h.attributes,
+	}
+
+	if err := ScrollConsoleScreenBuffer(h.fd, scrollRect, scrollRect, destOrigin, char); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (h *windowsAnsiEventHandler) deleteCharacters(param int) error {
+	info, err := GetConsoleScreenBufferInfo(h.fd)
+	if err != nil {
+		return err
+	}
+	return h.scrollLine(param, info.CursorPosition, info)
+}
+
+func (h *windowsAnsiEventHandler) insertCharacters(param int) error {
+	return h.deleteCharacters(-param)
+}
+
+// scrollLine scrolls a line horizontally starting at the provided position by a number of columns.
+func (h *windowsAnsiEventHandler) scrollLine(columns int, position COORD, info *CONSOLE_SCREEN_BUFFER_INFO) error {
+	// Copy from and clip to the scroll region (full buffer width)
+	scrollRect := SMALL_RECT{
+		Top:    position.Y,
+		Bottom: position.Y,
+		Left:   position.X,
+		Right:  info.Size.X - 1,
+	}
+
+	// Origin to which area should be copied
+	destOrigin := COORD{
+		X: position.X - int16(columns),
+		Y: position.Y,
+	}
+
+	char := CHAR_INFO{
+		UnicodeChar: ' ',
+		Attributes:  h.attributes,
+	}
+
+	if err := ScrollConsoleScreenBuffer(h.fd, scrollRect, scrollRect, destOrigin, char); err != nil {
+		return err
+	}
+	return nil
+}
@@ -0,0 +1,9 @@
+// +build windows
+
+package winterm
+
+// AddInRange increments a value by the passed quantity while ensuring the values
+// always remain within the supplied min / max range.
+func addInRange(n int16, increment int16, min int16, max int16) int16 {
+	return ensureInRange(n+increment, min, max)
+}
@@ -0,0 +1,743 @@
+// +build windows
+
+package winterm
+
+import (
+	"bytes"
+	"log"
+	"os"
+	"strconv"
+
+	"github.com/Azure/go-ansiterm"
+)
+
+type windowsAnsiEventHandler struct {
+	fd             uintptr
+	file           *os.File
+	infoReset      *CONSOLE_SCREEN_BUFFER_INFO
+	sr             scrollRegion
+	buffer         bytes.Buffer
+	attributes     uint16
+	inverted       bool
+	wrapNext       bool
+	drewMarginByte bool
+	originMode     bool
+	marginByte     byte
+	curInfo        *CONSOLE_SCREEN_BUFFER_INFO
+	curPos         COORD
+	logf           func(string, ...interface{})
+}
+
+type Option func(*windowsAnsiEventHandler)
+
+func WithLogf(f func(string, ...interface{})) Option {
+	return func(w *windowsAnsiEventHandler) {
+		w.logf = f
+	}
+}
+
+func CreateWinEventHandler(fd uintptr, file *os.File, opts ...Option) ansiterm.AnsiEventHandler {
+	infoReset, err := GetConsoleScreenBufferInfo(fd)
+	if err != nil {
+		return nil
+	}
+
+	h := &windowsAnsiEventHandler{
+		fd:         fd,
+		file:       file,
+		infoReset:  infoReset,
+		attributes: infoReset.Attributes,
+	}
+	for _, o := range opts {
+		o(h)
+	}
+
+	if isDebugEnv := os.Getenv(ansiterm.LogEnv); isDebugEnv == "1" {
+		logFile, _ := os.Create("winEventHandler.log")
+		logger := log.New(logFile, "", log.LstdFlags)
+		if h.logf != nil {
+			l := h.logf
+			h.logf = func(s string, v ...interface{}) {
+				l(s, v...)
+				logger.Printf(s, v...)
+			}
+		} else {
+			h.logf = logger.Printf
+		}
+	}
+
+	if h.logf == nil {
+		h.logf = func(string, ...interface{}) {}
+	}
+
+	return h
+}
+
+type scrollRegion struct {
+	top    int16
+	bottom int16
+}
+
+// simulateLF simulates a LF or CR+LF by scrolling if necessary to handle the
+// current cursor position and scroll region settings, in which case it returns
+// true. If no special handling is necessary, then it does nothing and returns
+// false.
+//
+// In the false case, the caller should ensure that a carriage return
+// and line feed are inserted or that the text is otherwise wrapped.
+func (h *windowsAnsiEventHandler) simulateLF(includeCR bool) (bool, error) {
+	if h.wrapNext {
+		if err := h.Flush(); err != nil {
+			return false, err
+		}
+		h.clearWrap()
+	}
+	pos, info, err := h.getCurrentInfo()
+	if err != nil {
+		return false, err
+	}
+	sr := h.effectiveSr(info.Window)
+	if pos.Y == sr.bottom {
+		// Scrolling is necessary. Let Windows automatically scroll if the scrolling region
+		// is the full window.
+		if sr.top == info.Window.Top && sr.bottom == info.Window.Bottom {
+			if includeCR {
+				pos.X = 0
+				h.updatePos(pos)
+			}
+			return false, nil
+		}
+
+		// A custom scroll region is active. Scroll the window manually to simulate
+		// the LF.
+		if err := h.Flush(); err != nil {
+			return false, err
+		}
+		h.logf("Simulating LF inside scroll region")
+		if err := h.scrollUp(1); err != nil {
+			return false, err
+		}
+		if includeCR {
+			pos.X = 0
+			if err := SetConsoleCursorPosition(h.fd, pos); err != nil {
+				return false, err
+			}
+		}
+		return true, nil
+
+	} else if pos.Y < info.Window.Bottom {
+		// Let Windows handle the LF.
+		pos.Y++
+		if includeCR {
+			pos.X = 0
+		}
+		h.updatePos(pos)
+		return false, nil
+	} else {
+		// The cursor is at the bottom of the screen but outside the scroll
+		// region. Skip the LF.
+		h.logf("Simulating LF outside scroll region")
+		if includeCR {
+			if err := h.Flush(); err != nil {
+				return false, err
+			}
+			pos.X = 0
+			if err := SetConsoleCursorPosition(h.fd, pos); err != nil {
+				return false, err
+			}
+		}
+		return true, nil
+	}
+}
+
+// executeLF executes a LF without a CR.
+func (h *windowsAnsiEventHandler) executeLF() error {
+	handled, err := h.simulateLF(false)
+	if err != nil {
+		return err
+	}
+	if !handled {
+		// Windows LF will reset the cursor column position. Write the LF
+		// and restore the cursor position.
+		pos, _, err := h.getCurrentInfo()
+		if err != nil {
+			return err
+		}
+		h.buffer.WriteByte(ansiterm.ANSI_LINE_FEED)
+		if pos.X != 0 {
+			if err := h.Flush(); err != nil {
+				return err
+			}
+			h.logf("Resetting cursor position for LF without CR")
+			if err := SetConsoleCursorPosition(h.fd, pos); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func (h *windowsAnsiEventHandler) Print(b byte) error {
+	if h.wrapNext {
+		h.buffer.WriteByte(h.marginByte)
+		h.clearWrap()
+		if _, err := h.simulateLF(true); err != nil {
+			return err
+		}
+	}
+	pos, info, err := h.getCurrentInfo()
+	if err != nil {
+		return err
+	}
+	if pos.X == info.Size.X-1 {
+		h.wrapNext = true
+		h.marginByte = b
+	} else {
+		pos.X++
+		h.updatePos(pos)
+		h.buffer.WriteByte(b)
+	}
+	return nil
+}
+
+func (h *windowsAnsiEventHandler) Execute(b byte) error {
+	switch b {
+	case ansiterm.ANSI_TAB:
+		h.logf("Execute(TAB)")
+		// Move to the next tab stop, but preserve auto-wrap if already set.
+		if !h.wrapNext {
+			pos, info, err := h.getCurrentInfo()
+			if err != nil {
+				return err
+			}
+			pos.X = (pos.X + 8) - pos.X%8
+			if pos.X >= info.Size.X {
+				pos.X = info.Size.X - 1
+			}
+			if err := h.Flush(); err != nil {
+				return err
+			}
+			if err := SetConsoleCursorPosition(h.fd, pos); err != nil {
+				return err
+			}
+		}
+		return nil
+
+	case ansiterm.ANSI_BEL:
+		h.buffer.WriteByte(ansiterm.ANSI_BEL)
+		return nil
+
+	case ansiterm.ANSI_BACKSPACE:
+		if h.wrapNext {
+			if err := h.Flush(); err != nil {
+				return err
+			}
+			h.clearWrap()
+		}
+		pos, _, err := h.getCurrentInfo()
+		if err != nil {
+			return err
+		}
+		if pos.X > 0 {
+			pos.X--
+			h.updatePos(pos)
+			h.buffer.WriteByte(ansiterm.ANSI_BACKSPACE)
+		}
+		return nil
+
+	case ansiterm.ANSI_VERTICAL_TAB, ansiterm.ANSI_FORM_FEED:
+		// Treat as true LF.
+		return h.executeLF()
+
+	case ansiterm.ANSI_LINE_FEED:
+		// Simulate a CR and LF for now since there is no way in go-ansiterm
+		// to tell if the LF should include CR (and more things break when it's
+		// missing than when it's incorrectly added).
+		handled, err := h.simulateLF(true)
+		if handled || err != nil {
+			return err
+		}
+		return h.buffer.WriteByte(ansiterm.ANSI_LINE_FEED)
+
+	case ansiterm.ANSI_CARRIAGE_RETURN:
+		if h.wrapNext {
+			if err := h.Flush(); err != nil {
+				return err
+			}
+			h.clearWrap()
+		}
+		pos, _, err := h.getCurrentInfo()
+		if err != nil {
+			return err
+		}
+		if pos.X != 0 {
+			pos.X = 0
+			h.updatePos(pos)
+			h.buffer.WriteByte(ansiterm.ANSI_CARRIAGE_RETURN)
+		}
+		return nil
+
+	default:
+		return nil
+	}
+}
+
+func (h *windowsAnsiEventHandler) CUU(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	h.logf("CUU: [%v]", []string{strconv.Itoa(param)})
+	h.clearWrap()
+	return h.moveCursorVertical(-param)
+}
+
+func (h *windowsAnsiEventHandler) CUD(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	h.logf("CUD: [%v]", []string{strconv.Itoa(param)})
+	h.clearWrap()
+	return h.moveCursorVertical(param)
+}
+
+func (h *windowsAnsiEventHandler) CUF(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	h.logf("CUF: [%v]", []string{strconv.Itoa(param)})
+	h.clearWrap()
+	return h.moveCursorHorizontal(param)
+}
+
+func (h *windowsAnsiEventHandler) CUB(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	h.logf("CUB: [%v]", []string{strconv.Itoa(param)})
+	h.clearWrap()
+	return h.moveCursorHorizontal(-param)
+}
+
+func (h *windowsAnsiEventHandler) CNL(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	h.logf("CNL: [%v]", []string{strconv.Itoa(param)})
+	h.clearWrap()
+	return h.moveCursorLine(param)
+}
+
+func (h *windowsAnsiEventHandler) CPL(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	h.logf("CPL: [%v]", []string{strconv.Itoa(param)})
+	h.clearWrap()
+	return h.moveCursorLine(-param)
+}
+
+func (h *windowsAnsiEventHandler) CHA(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	h.logf("CHA: [%v]", []string{strconv.Itoa(param)})
+	h.clearWrap()
+	return h.moveCursorColumn(param)
+}
+
+func (h *windowsAnsiEventHandler) VPA(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	h.logf("VPA: [[%d]]", param)
+	h.clearWrap()
+	info, err := GetConsoleScreenBufferInfo(h.fd)
+	if err != nil {
+		return err
+	}
+	window := h.getCursorWindow(info)
+	position := info.CursorPosition
+	position.Y = window.Top + int16(param) - 1
+	return h.setCursorPosition(position, window)
+}
+
+func (h *windowsAnsiEventHandler) CUP(row int, col int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	h.logf("CUP: [[%d %d]]", row, col)
+	h.clearWrap()
+	info, err := GetConsoleScreenBufferInfo(h.fd)
+	if err != nil {
+		return err
+	}
+
+	window := h.getCursorWindow(info)
+	position := COORD{window.Left + int16(col) - 1, window.Top + int16(row) - 1}
+	return h.setCursorPosition(position, window)
+}
+
+func (h *windowsAnsiEventHandler) HVP(row int, col int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	h.logf("HVP: [[%d %d]]", row, col)
+	h.clearWrap()
+	return h.CUP(row, col)
+}
+
+func (h *windowsAnsiEventHandler) DECTCEM(visible bool) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	h.logf("DECTCEM: [%v]", []string{strconv.FormatBool(visible)})
+	h.clearWrap()
+	return nil
+}
+
+func (h *windowsAnsiEventHandler) DECOM(enable bool) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	h.logf("DECOM: [%v]", []string{strconv.FormatBool(enable)})
+	h.clearWrap()
+	h.originMode = enable
+	return h.CUP(1, 1)
+}
+
+func (h *windowsAnsiEventHandler) DECCOLM(use132 bool) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	h.logf("DECCOLM: [%v]", []string{strconv.FormatBool(use132)})
+	h.clearWrap()
+	if err := h.ED(2); err != nil {
+		return err
+	}
+	info, err := GetConsoleScreenBufferInfo(h.fd)
+	if err != nil {
+		return err
+	}
+	targetWidth := int16(80)
+	if use132 {
+		targetWidth = 132
+	}
+	if info.Size.X < targetWidth {
+		if err := SetConsoleScreenBufferSize(h.fd, COORD{targetWidth, info.Size.Y}); err != nil {
+			h.logf("set buffer failed: %v", err)
+			return err
+		}
+	}
+	window := info.Window
+	window.Left = 0
+	window.Right = targetWidth - 1
+	if err := SetConsoleWindowInfo(h.fd, true, window); err != nil {
+		h.logf("set window failed: %v", err)
+		return err
+	}
+	if info.Size.X > targetWidth {
+		if err := SetConsoleScreenBufferSize(h.fd, COORD{targetWidth, info.Size.Y}); err != nil {
+			h.logf("set buffer failed: %v", err)
+			return err
+		}
+	}
+	return SetConsoleCursorPosition(h.fd, COORD{0, 0})
+}
+
+func (h *windowsAnsiEventHandler) ED(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	h.logf("ED: [%v]", []string{strconv.Itoa(param)})
+	h.clearWrap()
+
+	// [J  -- Erases from the cursor to the end of the screen, including the cursor position.
+	// [1J -- Erases from the beginning of the screen to the cursor, including the cursor position.
+	// [2J -- Erases the complete display. The cursor does not move.
+	// Notes:
+	// -- Clearing the entire buffer, versus just the Window, works best for Windows Consoles
+
+	info, err := GetConsoleScreenBufferInfo(h.fd)
+	if err != nil {
+		return err
+	}
+
+	var start COORD
+	var end COORD
+
+	switch param {
+	case 0:
+		start = info.CursorPosition
+		end = COORD{info.Size.X - 1, info.Size.Y - 1}
+
+	case 1:
+		start = COORD{0, 0}
+		end = info.CursorPosition
+
+	case 2:
+		start = COORD{0, 0}
+		end = COORD{info.Size.X - 1, info.Size.Y - 1}
+	}
+
+	err = h.clearRange(h.attributes, start, end)
+	if err != nil {
+		return err
+	}
+
+	// If the whole buffer was cleared, move the window to the top while preserving
+	// the window-relative cursor position.
+	if param == 2 {
+		pos := info.CursorPosition
+		window := info.Window
+		pos.Y -= window.Top
+		window.Bottom -= window.Top
+		window.Top = 0
+		if err := SetConsoleCursorPosition(h.fd, pos); err != nil {
+			return err
+		}
+		if err := SetConsoleWindowInfo(h.fd, true, window); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (h *windowsAnsiEventHandler) EL(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	h.logf("EL: [%v]", strconv.Itoa(param))
+	h.clearWrap()
+
+	// [K  -- Erases from the cursor to the end of the line, including the cursor position.
+	// [1K -- Erases from the beginning of the line to the cursor, including the cursor position.
+	// [2K -- Erases the complete line.
+
+	info, err := GetConsoleScreenBufferInfo(h.fd)
+	if err != nil {
+		return err
+	}
+
+	var start COORD
+	var end COORD
+
+	switch param {
+	case 0:
+		start = info.CursorPosition
+		end = COORD{info.Size.X, info.CursorPosition.Y}
+
+	case 1:
+		start = COORD{0, info.CursorPosition.Y}
+		end = info.CursorPosition
+
+	case 2:
+		start = COORD{0, info.CursorPosition.Y}
+		end = COORD{info.Size.X, info.CursorPosition.Y}
+	}
+
+	err = h.clearRange(h.attributes, start, end)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (h *windowsAnsiEventHandler) IL(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	h.logf("IL: [%v]", strconv.Itoa(param))
+	h.clearWrap()
+	return h.insertLines(param)
+}
+
+func (h *windowsAnsiEventHandler) DL(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	h.logf("DL: [%v]", strconv.Itoa(param))
+	h.clearWrap()
+	return h.deleteLines(param)
+}
+
+func (h *windowsAnsiEventHandler) ICH(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	h.logf("ICH: [%v]", strconv.Itoa(param))
+	h.clearWrap()
+	return h.insertCharacters(param)
+}
+
+func (h *windowsAnsiEventHandler) DCH(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	h.logf("DCH: [%v]", strconv.Itoa(param))
+	h.clearWrap()
+	return h.deleteCharacters(param)
+}
+
+func (h *windowsAnsiEventHandler) SGR(params []int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	strings := []string{}
+	for _, v := range params {
+		strings = append(strings, strconv.Itoa(v))
+	}
+
+	h.logf("SGR: [%v]", strings)
+
+	if len(params) <= 0 {
+		h.attributes = h.infoReset.Attributes
+		h.inverted = false
+	} else {
+		for _, attr := range params {
+
+			if attr == ansiterm.ANSI_SGR_RESET {
+				h.attributes = h.infoReset.Attributes
+				h.inverted = false
+				continue
+			}
+
+			h.attributes, h.inverted = collectAnsiIntoWindowsAttributes(h.attributes, h.inverted, h.infoReset.Attributes, int16(attr))
+		}
+	}
+
+	attributes := h.attributes
+	if h.inverted {
+		attributes = invertAttributes(attributes)
+	}
+	err := SetConsoleTextAttribute(h.fd, attributes)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (h *windowsAnsiEventHandler) SU(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	h.logf("SU: [%v]", []string{strconv.Itoa(param)})
+	h.clearWrap()
+	return h.scrollUp(param)
+}
+
+func (h *windowsAnsiEventHandler) SD(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	h.logf("SD: [%v]", []string{strconv.Itoa(param)})
+	h.clearWrap()
+	return h.scrollDown(param)
+}
+
+func (h *windowsAnsiEventHandler) DA(params []string) error {
+	h.logf("DA: [%v]", params)
+	// DA cannot be implemented because it must send data on the VT100 input stream,
+	// which is not available to go-ansiterm.
+	return nil
+}
+
+func (h *windowsAnsiEventHandler) DECSTBM(top int, bottom int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	h.logf("DECSTBM: [%d, %d]", top, bottom)
+
+	// Windows is 0 indexed, Linux is 1 indexed
+	h.sr.top = int16(top - 1)
+	h.sr.bottom = int16(bottom - 1)
+
+	// This command also moves the cursor to the origin.
+	h.clearWrap()
+	return h.CUP(1, 1)
+}
+
+func (h *windowsAnsiEventHandler) RI() error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	h.logf("RI: []")
+	h.clearWrap()
+
+	info, err := GetConsoleScreenBufferInfo(h.fd)
+	if err != nil {
+		return err
+	}
+
+	sr := h.effectiveSr(info.Window)
+	if info.CursorPosition.Y == sr.top {
+		return h.scrollDown(1)
+	}
+
+	return h.moveCursorVertical(-1)
+}
+
+func (h *windowsAnsiEventHandler) IND() error {
+	h.logf("IND: []")
+	return h.executeLF()
+}
+
+func (h *windowsAnsiEventHandler) Flush() error {
+	h.curInfo = nil
+	if h.buffer.Len() > 0 {
+		h.logf("Flush: [%s]", h.buffer.Bytes())
+		if _, err := h.buffer.WriteTo(h.file); err != nil {
+			return err
+		}
+	}
+
+	if h.wrapNext && !h.drewMarginByte {
+		h.logf("Flush: drawing margin byte '%c'", h.marginByte)
+
+		info, err := GetConsoleScreenBufferInfo(h.fd)
+		if err != nil {
+			return err
+		}
+
+		charInfo := []CHAR_INFO{{UnicodeChar: uint16(h.marginByte), Attributes: info.Attributes}}
+		size := COORD{1, 1}
+		position := COORD{0, 0}
+		region := SMALL_RECT{Left: info.CursorPosition.X, Top: info.CursorPosition.Y, Right: info.CursorPosition.X, Bottom: info.CursorPosition.Y}
+		if err := WriteConsoleOutput(h.fd, charInfo, size, position, &region); err != nil {
+			return err
+		}
+		h.drewMarginByte = true
+	}
+	return nil
+}
+
+// cacheConsoleInfo ensures that the current console screen information has been queried
+// since the last call to Flush(). It must be called before accessing h.curInfo or h.curPos.
+func (h *windowsAnsiEventHandler) getCurrentInfo() (COORD, *CONSOLE_SCREEN_BUFFER_INFO, error) {
+	if h.curInfo == nil {
+		info, err := GetConsoleScreenBufferInfo(h.fd)
+		if err != nil {
+			return COORD{}, nil, err
+		}
+		h.curInfo = info
+		h.curPos = info.CursorPosition
+	}
+	return h.curPos, h.curInfo, nil
+}
+
+func (h *windowsAnsiEventHandler) updatePos(pos COORD) {
+	if h.curInfo == nil {
+		panic("failed to call getCurrentInfo before calling updatePos")
+	}
+	h.curPos = pos
+}
+
+// clearWrap clears the state where the cursor is in the margin
+// waiting for the next character before wrapping the line. This must
+// be done before most operations that act on the cursor.
+func (h *windowsAnsiEventHandler) clearWrap() {
+	h.wrapNext = false
+	h.drewMarginByte = false
+}
@@ -0,0 +1 @@
+*.exe
@@ -0,0 +1,22 @@
+The MIT License (MIT)
+
+Copyright (c) 2015 Microsoft
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
@@ -0,0 +1,22 @@
+# go-winio
+
+This repository contains utilities for efficiently performing Win32 IO operations in
+Go. Currently, this is focused on accessing named pipes and other file handles, and
+for using named pipes as a net transport.
+
+This code relies on IO completion ports to avoid blocking IO on system threads, allowing Go
+to reuse the thread to schedule another goroutine. This limits support to Windows Vista and
+newer operating systems. This is similar to the implementation of network sockets in Go's net
+package.
+
+Please see the LICENSE file for licensing information.
+
+This project has adopted the [Microsoft Open Source Code of
+Conduct](https://opensource.microsoft.com/codeofconduct/). For more information
+see the [Code of Conduct
+FAQ](https://opensource.microsoft.com/codeofconduct/faq/) or contact
+[opencode@microsoft.com](mailto:opencode@microsoft.com) with any additional
+questions or comments.
+
+Thanks to natefinch for the inspiration for this library. See https://github.com/natefinch/npipe
+for another named pipe implementation.
@@ -0,0 +1,27 @@
+Copyright (c) 2012 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
@@ -0,0 +1,280 @@
+// +build windows
+
+package winio
+
+import (
+	"encoding/binary"
+	"errors"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"os"
+	"runtime"
+	"syscall"
+	"unicode/utf16"
+)
+
+//sys backupRead(h syscall.Handle, b []byte, bytesRead *uint32, abort bool, processSecurity bool, context *uintptr) (err error) = BackupRead
+//sys backupWrite(h syscall.Handle, b []byte, bytesWritten *uint32, abort bool, processSecurity bool, context *uintptr) (err error) = BackupWrite
+
+const (
+	BackupData = uint32(iota + 1)
+	BackupEaData
+	BackupSecurity
+	BackupAlternateData
+	BackupLink
+	BackupPropertyData
+	BackupObjectId
+	BackupReparseData
+	BackupSparseBlock
+	BackupTxfsData
+)
+
+const (
+	StreamSparseAttributes = uint32(8)
+)
+
+const (
+	WRITE_DAC              = 0x40000
+	WRITE_OWNER            = 0x80000
+	ACCESS_SYSTEM_SECURITY = 0x1000000
+)
+
+// BackupHeader represents a backup stream of a file.
+type BackupHeader struct {
+	Id         uint32 // The backup stream ID
+	Attributes uint32 // Stream attributes
+	Size       int64  // The size of the stream in bytes
+	Name       string // The name of the stream (for BackupAlternateData only).
+	Offset     int64  // The offset of the stream in the file (for BackupSparseBlock only).
+}
+
+type win32StreamId struct {
+	StreamId   uint32
+	Attributes uint32
+	Size       uint64
+	NameSize   uint32
+}
+
+// BackupStreamReader reads from a stream produced by the BackupRead Win32 API and produces a series
+// of BackupHeader values.
+type BackupStreamReader struct {
+	r         io.Reader
+	bytesLeft int64
+}
+
+// NewBackupStreamReader produces a BackupStreamReader from any io.Reader.
+func NewBackupStreamReader(r io.Reader) *BackupStreamReader {
+	return &BackupStreamReader{r, 0}
+}
+
+// Next returns the next backup stream and prepares for calls to Read(). It skips the remainder of the current stream if
+// it was not completely read.
+func (r *BackupStreamReader) Next() (*BackupHeader, error) {
+	if r.bytesLeft > 0 {
+		if s, ok := r.r.(io.Seeker); ok {
+			// Make sure Seek on io.SeekCurrent sometimes succeeds
+			// before trying the actual seek.
+			if _, err := s.Seek(0, io.SeekCurrent); err == nil {
+				if _, err = s.Seek(r.bytesLeft, io.SeekCurrent); err != nil {
+					return nil, err
+				}
+				r.bytesLeft = 0
+			}
+		}
+		if _, err := io.Copy(ioutil.Discard, r); err != nil {
+			return nil, err
+		}
+	}
+	var wsi win32StreamId
+	if err := binary.Read(r.r, binary.LittleEndian, &wsi); err != nil {
+		return nil, err
+	}
+	hdr := &BackupHeader{
+		Id:         wsi.StreamId,
+		Attributes: wsi.Attributes,
+		Size:       int64(wsi.Size),
+	}
+	if wsi.NameSize != 0 {
+		name := make([]uint16, int(wsi.NameSize/2))
+		if err := binary.Read(r.r, binary.LittleEndian, name); err != nil {
+			return nil, err
+		}
+		hdr.Name = syscall.UTF16ToString(name)
+	}
+	if wsi.StreamId == BackupSparseBlock {
+		if err := binary.Read(r.r, binary.LittleEndian, &hdr.Offset); err != nil {
+			return nil, err
+		}
+		hdr.Size -= 8
+	}
+	r.bytesLeft = hdr.Size
+	return hdr, nil
+}
+
+// Read reads from the current backup stream.
+func (r *BackupStreamReader) Read(b []byte) (int, error) {
+	if r.bytesLeft == 0 {
+		return 0, io.EOF
+	}
+	if int64(len(b)) > r.bytesLeft {
+		b = b[:r.bytesLeft]
+	}
+	n, err := r.r.Read(b)
+	r.bytesLeft -= int64(n)
+	if err == io.EOF {
+		err = io.ErrUnexpectedEOF
+	} else if r.bytesLeft == 0 && err == nil {
+		err = io.EOF
+	}
+	return n, err
+}
+
+// BackupStreamWriter writes a stream compatible with the BackupWrite Win32 API.
+type BackupStreamWriter struct {
+	w         io.Writer
+	bytesLeft int64
+}
+
+// NewBackupStreamWriter produces a BackupStreamWriter on top of an io.Writer.
+func NewBackupStreamWriter(w io.Writer) *BackupStreamWriter {
+	return &BackupStreamWriter{w, 0}
+}
+
+// WriteHeader writes the next backup stream header and prepares for calls to Write().
+func (w *BackupStreamWriter) WriteHeader(hdr *BackupHeader) error {
+	if w.bytesLeft != 0 {
+		return fmt.Errorf("missing %d bytes", w.bytesLeft)
+	}
+	name := utf16.Encode([]rune(hdr.Name))
+	wsi := win32StreamId{
+		StreamId:   hdr.Id,
+		Attributes: hdr.Attributes,
+		Size:       uint64(hdr.Size),
+		NameSize:   uint32(len(name) * 2),
+	}
+	if hdr.Id == BackupSparseBlock {
+		// Include space for the int64 block offset
+		wsi.Size += 8
+	}
+	if err := binary.Write(w.w, binary.LittleEndian, &wsi); err != nil {
+		return err
+	}
+	if len(name) != 0 {
+		if err := binary.Write(w.w, binary.LittleEndian, name); err != nil {
+			return err
+		}
+	}
+	if hdr.Id == BackupSparseBlock {
+		if err := binary.Write(w.w, binary.LittleEndian, hdr.Offset); err != nil {
+			return err
+		}
+	}
+	w.bytesLeft = hdr.Size
+	return nil
+}
+
+// Write writes to the current backup stream.
+func (w *BackupStreamWriter) Write(b []byte) (int, error) {
+	if w.bytesLeft < int64(len(b)) {
+		return 0, fmt.Errorf("too many bytes by %d", int64(len(b))-w.bytesLeft)
+	}
+	n, err := w.w.Write(b)
+	w.bytesLeft -= int64(n)
+	return n, err
+}
+
+// BackupFileReader provides an io.ReadCloser interface on top of the BackupRead Win32 API.
+type BackupFileReader struct {
+	f               *os.File
+	includeSecurity bool
+	ctx             uintptr
+}
+
+// NewBackupFileReader returns a new BackupFileReader from a file handle. If includeSecurity is true,
+// Read will attempt to read the security descriptor of the file.
+func NewBackupFileReader(f *os.File, includeSecurity bool) *BackupFileReader {
+	r := &BackupFileReader{f, includeSecurity, 0}
+	return r
+}
+
+// Read reads a backup stream from the file by calling the Win32 API BackupRead().
+func (r *BackupFileReader) Read(b []byte) (int, error) {
+	var bytesRead uint32
+	err := backupRead(syscall.Handle(r.f.Fd()), b, &bytesRead, false, r.includeSecurity, &r.ctx)
+	if err != nil {
+		return 0, &os.PathError{"BackupRead", r.f.Name(), err}
+	}
+	runtime.KeepAlive(r.f)
+	if bytesRead == 0 {
+		return 0, io.EOF
+	}
+	return int(bytesRead), nil
+}
+
+// Close frees Win32 resources associated with the BackupFileReader. It does not close
+// the underlying file.
+func (r *BackupFileReader) Close() error {
+	if r.ctx != 0 {
+		backupRead(syscall.Handle(r.f.Fd()), nil, nil, true, false, &r.ctx)
+		runtime.KeepAlive(r.f)
+		r.ctx = 0
+	}
+	return nil
+}
+
+// BackupFileWriter provides an io.WriteCloser interface on top of the BackupWrite Win32 API.
+type BackupFileWriter struct {
+	f               *os.File
+	includeSecurity bool
+	ctx             uintptr
+}
+
+// NewBackupFileWriter returns a new BackupFileWriter from a file handle. If includeSecurity is true,
+// Write() will attempt to restore the security descriptor from the stream.
+func NewBackupFileWriter(f *os.File, includeSecurity bool) *BackupFileWriter {
+	w := &BackupFileWriter{f, includeSecurity, 0}
+	return w
+}
+
+// Write restores a portion of the file using the provided backup stream.
+func (w *BackupFileWriter) Write(b []byte) (int, error) {
+	var bytesWritten uint32
+	err := backupWrite(syscall.Handle(w.f.Fd()), b, &bytesWritten, false, w.includeSecurity, &w.ctx)
+	if err != nil {
+		return 0, &os.PathError{"BackupWrite", w.f.Name(), err}
+	}
+	runtime.KeepAlive(w.f)
+	if int(bytesWritten) != len(b) {
+		return int(bytesWritten), errors.New("not all bytes could be written")
+	}
+	return len(b), nil
+}
+
+// Close frees Win32 resources associated with the BackupFileWriter. It does not
+// close the underlying file.
+func (w *BackupFileWriter) Close() error {
+	if w.ctx != 0 {
+		backupWrite(syscall.Handle(w.f.Fd()), nil, nil, true, false, &w.ctx)
+		runtime.KeepAlive(w.f)
+		w.ctx = 0
+	}
+	return nil
+}
+
+// OpenForBackup opens a file or directory, potentially skipping access checks if the backup
+// or restore privileges have been acquired.
+//
+// If the file opened was a directory, it cannot be used with Readdir().
+func OpenForBackup(path string, access uint32, share uint32, createmode uint32) (*os.File, error) {
+	winPath, err := syscall.UTF16FromString(path)
+	if err != nil {
+		return nil, err
+	}
+	h, err := syscall.CreateFile(&winPath[0], access, share, nil, createmode, syscall.FILE_FLAG_BACKUP_SEMANTICS|syscall.FILE_FLAG_OPEN_REPARSE_POINT, 0)
+	if err != nil {
+		err = &os.PathError{Op: "open", Path: path, Err: err}
+		return nil, err
+	}
+	return os.NewFile(uintptr(h), path), nil
+}
@@ -0,0 +1,137 @@
+package winio
+
+import (
+	"bytes"
+	"encoding/binary"
+	"errors"
+)
+
+type fileFullEaInformation struct {
+	NextEntryOffset uint32
+	Flags           uint8
+	NameLength      uint8
+	ValueLength     uint16
+}
+
+var (
+	fileFullEaInformationSize = binary.Size(&fileFullEaInformation{})
+
+	errInvalidEaBuffer = errors.New("invalid extended attribute buffer")
+	errEaNameTooLarge  = errors.New("extended attribute name too large")
+	errEaValueTooLarge = errors.New("extended attribute value too large")
+)
+
+// ExtendedAttribute represents a single Windows EA.
+type ExtendedAttribute struct {
+	Name  string
+	Value []byte
+	Flags uint8
+}
+
+func parseEa(b []byte) (ea ExtendedAttribute, nb []byte, err error) {
+	var info fileFullEaInformation
+	err = binary.Read(bytes.NewReader(b), binary.LittleEndian, &info)
+	if err != nil {
+		err = errInvalidEaBuffer
+		return
+	}
+
+	nameOffset := fileFullEaInformationSize
+	nameLen := int(info.NameLength)
+	valueOffset := nameOffset + int(info.NameLength) + 1
+	valueLen := int(info.ValueLength)
+	nextOffset := int(info.NextEntryOffset)
+	if valueLen+valueOffset > len(b) || nextOffset < 0 || nextOffset > len(b) {
+		err = errInvalidEaBuffer
+		return
+	}
+
+	ea.Name = string(b[nameOffset : nameOffset+nameLen])
+	ea.Value = b[valueOffset : valueOffset+valueLen]
+	ea.Flags = info.Flags
+	if info.NextEntryOffset != 0 {
+		nb = b[info.NextEntryOffset:]
+	}
+	return
+}
+
+// DecodeExtendedAttributes decodes a list of EAs from a FILE_FULL_EA_INFORMATION
+// buffer retrieved from BackupRead, ZwQueryEaFile, etc.
+func DecodeExtendedAttributes(b []byte) (eas []ExtendedAttribute, err error) {
+	for len(b) != 0 {
+		ea, nb, err := parseEa(b)
+		if err != nil {
+			return nil, err
+		}
+
+		eas = append(eas, ea)
+		b = nb
+	}
+	return
+}
+
+func writeEa(buf *bytes.Buffer, ea *ExtendedAttribute, last bool) error {
+	if int(uint8(len(ea.Name))) != len(ea.Name) {
+		return errEaNameTooLarge
+	}
+	if int(uint16(len(ea.Value))) != len(ea.Value) {
+		return errEaValueTooLarge
+	}
+	entrySize := uint32(fileFullEaInformationSize + len(ea.Name) + 1 + len(ea.Value))
+	withPadding := (entrySize + 3) &^ 3
+	nextOffset := uint32(0)
+	if !last {
+		nextOffset = withPadding
+	}
+	info := fileFullEaInformation{
+		NextEntryOffset: nextOffset,
+		Flags:           ea.Flags,
+		NameLength:      uint8(len(ea.Name)),
+		ValueLength:     uint16(len(ea.Value)),
+	}
+
+	err := binary.Write(buf, binary.LittleEndian, &info)
+	if err != nil {
+		return err
+	}
+
+	_, err = buf.Write([]byte(ea.Name))
+	if err != nil {
+		return err
+	}
+
+	err = buf.WriteByte(0)
+	if err != nil {
+		return err
+	}
+
+	_, err = buf.Write(ea.Value)
+	if err != nil {
+		return err
+	}
+
+	_, err = buf.Write([]byte{0, 0, 0}[0 : withPadding-entrySize])
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// EncodeExtendedAttributes encodes a list of EAs into a FILE_FULL_EA_INFORMATION
+// buffer for use with BackupWrite, ZwSetEaFile, etc.
+func EncodeExtendedAttributes(eas []ExtendedAttribute) ([]byte, error) {
+	var buf bytes.Buffer
+	for i := range eas {
+		last := false
+		if i == len(eas)-1 {
+			last = true
+		}
+
+		err := writeEa(&buf, &eas[i], last)
+		if err != nil {
+			return nil, err
+		}
+	}
+	return buf.Bytes(), nil
+}
Author	SHA1	Message	Date
Martynas Pumputis	e2d6ee4223	Add release v2.4.0	2018-07-25 10:32:04 +02:00
Bryan Boreham	90a81ce736	Merge pull request #3319 from weaveworks/weave-reset-err Make error "Weave is not running" less confusing when running on Kubernetes	2018-07-24 10:18:24 +01:00
Bryan Boreham	9cf0dd1b87	Merge pull request #3313 from weaveworks/issues/2624-egress-npc Implement Egress NPC	2018-07-24 10:17:45 +01:00
Martynas Pumputis	e65cf32372	npc: Flush chain if rules mismatch in AddChainWithRules Also, move the helper function to net/iptables.go.	2018-07-24 10:06:55 +02:00
Martynas Pumputis	0ad2001ab4	npc: ACCEPT already established connections in egress chain It's safe to accept such connections as they will be accepted in the ingress chain anyway.	2018-07-24 10:06:55 +02:00
Martynas Pumputis	70ff510e49	npc: Document egress rules	2018-07-24 10:06:55 +02:00
Martynas Pumputis	6377aeabdd	npc: Do not ignore errors when creating chains Also, move ensureRulesAtTop to net/iptables.go	2018-07-24 10:06:55 +02:00
Martynas Pumputis	1649080a35	npc: Add ns name into ipBlock ipset name Otherwise, the same ipBlock ipset can be used among different namespaces which results in panic as refcounting of ipsets happens only per namespace, so npc will try to create the same ipset twice.	2018-07-24 10:06:55 +02:00
Martynas Pumputis	c1ee358f66	npc: Fix ipset package import path after rebase	2018-07-24 10:06:55 +02:00
Martynas Pumputis	2c708b57a1	npc: Improve analyser comments	2018-07-24 10:06:55 +02:00
Martynas Pumputis	c5772c814c	npc: Add comments for traffic steering	2018-07-24 10:06:55 +02:00
Martynas Pumputis	10a5b6fb51	npc: Use constants for chains	2018-07-24 10:06:55 +02:00
Martynas Pumputis	07d31a8558	npc: Get rid of the legacy netpol	2018-07-24 10:06:55 +02:00
Martynas Pumputis	cf3a3be8f2	npc: Replace isNil by reflect.IsNil	2018-07-24 10:06:23 +02:00
Martynas Pumputis	49224ec9f7	npc: Rename policy{Ingress,Egress} to policyType{Ingress,Egress}	2018-07-24 10:06:23 +02:00
Martynas Pumputis	dee24aec65	npc: Add integration test for egress Also, install dig (bind-tools) in the network-tester image.	2018-07-24 10:06:23 +02:00
Martynas Pumputis	9a63ade1b5	npc: Do not create WEAVE-NPC-EGRESS* chains in legacy netpol mode	2018-07-24 10:06:23 +02:00
Martynas Pumputis	18a6237ec7	npc: Check whether weave-local-pods exists before creating We do not destroy it anymore, thus the check.	2018-07-24 10:06:23 +02:00
Martynas Pumputis	be8298926a	npc: Pass --use-legacy-netpol to weaver in 840	2018-07-24 10:06:23 +02:00
Martynas Pumputis	86958be6cf	npc: Add --use-legacy-netpol flag to weaver Egress does not work in the legacy netpol mode, so in the legacy case we don't have to create the egress traffic steering rules. Otherwise, some traffic will be blocked.	2018-07-24 10:06:23 +02:00
Martynas Pumputis	a2d07c85da	npc: Remove WEAVE-NPC-EGRESS* chains upon "weave reset" Also, fix removal of rule which steers traffic for ingress processing.	2018-07-24 10:06:23 +02:00
Martynas Pumputis	295ddc5248	npc: Try not to clear WEAVE-NPC-EGRESS chain First check whether the chain exists with the required rules, and if not - create it. If we flush each time we start weave-npc then we create a (short) time window during which all egress traffic is allowed.	2018-07-24 10:06:23 +02:00
Martynas Pumputis	a85a19e40a	npc: Add unit test for egress policy with ipblock	2018-07-24 10:06:23 +02:00
Martynas Pumputis	cec3c8a846	npc: Add iptables mocked interface	2018-07-24 10:06:23 +02:00
Martynas Pumputis	7da7ce85df	npc: Extend TestDefaultAllow unit test to include egress	2018-07-24 10:06:23 +02:00
Martynas Pumputis	6055431b6f	npc: Refactor bypassRules	2018-07-24 10:06:23 +02:00
Martynas Pumputis	c0e2deb5a0	npc: Add WEAVE-NPC-EGRESS-ACCEPT chain For improving readability of NPC rules. The chain marks to-be-allowed egress traffic.	2018-07-24 10:06:23 +02:00
Martynas Pumputis	1f86ed55ba	npc: Ensure default-allow rules for egress	2018-07-24 10:06:23 +02:00
Martynas Pumputis	35f1ba17e1	npc: Provision egress rules	2018-07-24 10:06:23 +02:00
Martynas Pumputis	b84fbf86ec	npc: Add a dummy isNil method to ruleHost interface	2018-07-24 10:06:23 +02:00
Martynas Pumputis	a5e0b3452d	npc: Create rules with IPBlock (egress only)	2018-07-24 10:06:23 +02:00
Martynas Pumputis	0a1ca30aae	npc: Add getRuleSpec for ipBlockSpec	2018-07-24 10:06:23 +02:00
Martynas Pumputis	2e85018c26	npc: Add ruleHost interface The idea for the interface is taken from the kitt1987/ipblock work. The interface is going to be implemented by selectorSpec and ipBlockSpec.	2018-07-24 10:06:23 +02:00
Martynas Pumputis	affdc6f5af	npc: Provision networkingv1.IPBlock (only for Egress)	2018-07-24 10:06:23 +02:00
Martynas Pumputis	9198bb5a68	npc: Refactor npc/ipblock.go - No need to validate networkingv1.IPBlock fields as k8s does it. - Fix provisioning.	2018-07-24 10:06:23 +02:00
Kitt Hsu	9769c8d5b9	support ipblock in npc NOTE(brb): This commit is cherry-picked from the kitt1987/ipblock branch.	2018-07-24 10:06:23 +02:00
Martynas Pumputis	688328dc57	npc: Steer traffic for egress processing We need two rules: * `-A INPUT -i weave -j WEAVE-NPC-EGRESS`: applies to packets destined to a local node. * `-A FORWARD -i weave -j WEAVE-NPC-EGRESS`: the rest. It can match an ingress packet.	2018-07-24 10:06:23 +02:00
Martynas Pumputis	8904a4b144	npc: Get rid of selectorSpec.target We treat selectorSpec as a target selector if len(selectorSpec.policyTypes) > 0.	2018-07-24 10:06:23 +02:00
Martynas Pumputis	8d1ee752d4	npc: Rename dstSelector to targetSelector dstSelector becomes ambiguous once we introduce the egress. So, from now on, we call selector a target selector if it selects pods to which a netpol applies (aka NetworkPolicySpec.podSelector).	2018-07-24 10:06:23 +02:00
Martynas Pumputis	f02a11b27b	npc: Analyse egress policy This is a copy-paste from the ingress part with small modifications.	2018-07-24 10:06:23 +02:00
Martynas Pumputis	5e675f26f7	npc: Embed policyType into rule This ensures two rules with the same rulespec but of different policyType will end up having different keys. Sharing the same key would prevent from provisioning the rules.	2018-07-24 10:06:23 +02:00
Martynas Pumputis	497a9c7fd0	npc: Replace rulesType by policyType	2018-07-24 10:06:23 +02:00
Martynas Pumputis	5afcd0595d	npc: Parse PolicyTypes field when analysing a netpol	2018-07-24 10:06:23 +02:00
Martynas Pumputis	f27d4d2117	npc: Add defaultAllowIPSetName helper	2018-07-24 10:06:23 +02:00
Martynas Pumputis	79727a86fa	npc: Manage entries in egressDefaultAllowIPSet	2018-07-24 10:06:23 +02:00
Martynas Pumputis	d474c1c26d	npc: Add policyType to selectorSpec This allows us to distinguish between ingress and egress dst selectors (required when managing entries in default-allow ipsets).	2018-07-24 10:06:23 +02:00
Martynas Pumputis	29ec43bdc8	npc: Rename default-allow ipset for ingress As we're going to introduce one for egress, we cannot use "default-allow" name for ingress.	2018-07-24 10:06:23 +02:00
Martynas Pumputis	cabc05b06c	npc: Add rule type (ingress, egress)	2018-07-24 10:06:23 +02:00
Martynas Pumputis	89e820d62e	npc: Create WEAVE-NPC-EGRESS chain with the base rules The following rules are provisioned by weave-npc: -A WEAVE-NPC-EGRESS -m state --state RELATED,ESTABLISHED -j RETURN -A WEAVE-NPC-EGRESS -m set ! --match-set weave-local-pods src -j RETURN -A WEAVE-NPC-EGRESS -d 224.0.0.0/4 -j RETURN -A WEAVE-NPC-EGRESS -m state --state NEW -j WEAVE-NPC-EGRESS-DEFAULT -A WEAVE-NPC-EGRESS -m state --state NEW -m mark ! --mark 0x40000/0x40000 -j WEAVE-NPC-EGRESS-CUSTOM -A WEAVE-NPC-EGRESS -m state --state NEW -m mark ! --mark 0x40000/0x40000 -j NFLOG --nflog-group 86 -A WEAVE-NPC-EGRESS -m mark ! --mark 0x40000/0x40000 -j DROP -A WEAVE-NPC-EGRESS-CUSTOM <rulespec> -j MARK --set-xmark 0x40000/0x40000 -A WEAVE-NPC-EGRESS-CUSTOM <rulespec> -j RETURN -A WEAVE-NPC-EGRESS-DEFAULT <rulespec> -j MARK --set-xmark 0x40000/0x40000 -A WEAVE-NPC-EGRESS-DEFAULT <rulespec> -j RETURN For each rule we create two (mark and return). We cannot just accept a packet if it matches any rule, as a packet might need to traverse the ingress npc as well which happens later in the chain (in some cases we cannot detect whether packet is ingress or egress, so we need to check both chains).	2018-07-24 10:06:23 +02:00
Bryan Boreham	88616007b0	Merge pull request #3353 from louismunro/fix_xtables_lock Fix xtables.lock race condition between weave and kube-proxy.	2018-07-23 13:35:26 +01:00
Munro, Louis	b262a1eedc	Fix xtables.lock race condition between weave and kube-proxy. Fixes #3351	2018-07-22 13:12:00 -04:00
Bryan Boreham	b8ce722a2c	Merge pull request #3346 from murali-reddy/issue-3206 3206: Protect against CNI plugin being called with the host namespace	2018-07-19 12:02:49 +01:00
Bryan Boreham	b8fa4af06a	Merge branch '2.3'	2018-07-17 12:25:49 +01:00
Bryan Boreham	ea8f041a20	Fix indentation of TOC	2018-07-17 11:38:09 +01:00
Bryan Boreham	52e8cdb011	Merge pull request #3348 from weaveworks/check-running Add instructions to check weave-kube logs	2018-07-17 11:35:29 +01:00
Bryan Boreham	ac9f47783c	Review feedback	2018-07-17 10:24:26 +01:00
Murali Reddy	27f9aa16d6	3206: Protect against CNI plugin being called with the host namespace adding a check to verify if network namespace is not host network namespace Fixes #3206	2018-07-16 12:43:09 +05:30
Bryan Boreham	08dc649b9a	Merge branch '2.3'	2018-07-12 08:58:54 +00:00
Bryan Boreham	bb1a373272	Add instructions to check weave-kube logs "Check it is running" and "check the logs" are important steps when troubleshooting.	2018-07-12 08:53:02 +00:00
Martynas Pumputis	e192f68891	Merge pull request #3345 from stevenjohnstone/issues/3337-symlink-upgrades-broken Issue #3337: fix upgrade_cni_plugin Fix #3337	2018-07-09 12:17:32 +02:00
Stevie Johnstone	73654791c1	Issue #3337 : fix upgrade_cni_plugin	2018-07-09 10:33:04 +01:00
Martynas Pumputis	8908458942	Merge pull request #3340 from weaveworks/k8s-1-11 Update smoke tests to use Kubernetes 1.11	2018-07-09 09:49:11 +02:00
Bryan Boreham	26792283ab	Merge pull request #3328 from weaveworks/minikube-docs Add minikube caveat to docs	2018-07-05 13:39:06 +01:00
Bryan Boreham	32a92a4695	Add --force flag to kubeadm reset	2018-06-28 10:26:09 +00:00
Bryan Boreham	3bea2ae419	Bump to Kubernetes 1.11	2018-06-28 09:25:56 +00:00
Martynas Pumputis	58eaf19026	Merge pull request #3334 from weaveworks/issues/3332-add-nodestatus-perms Add permissions to set node status	2018-06-21 17:37:11 +02:00
Bryan Boreham	d513e68fab	Add permissions to set node status This is needed to update the node NetworkUnavailable conditon see https://github.com/weaveworks/weave/issues/3249	2018-06-21 11:08:27 +00:00
Martynas Pumputis	ca8bbb27a0	Add minikube caveat to docs	2018-06-16 18:04:03 +02:00
Martynas Pumputis	287dab27ae	Merge pull request #3317 from weaveworks/break-infinite-loop Break out of kube rm-peers loop if nothing changes	2018-06-12 14:52:39 +02:00
Martynas Pumputis	25c26519ed	Merge remote-tracking branch 'origin/2.3'	2018-06-12 14:47:42 +02:00
Bryan Boreham	cf66c8d507	Don't remove myself when reclaiming Some logs from users show an entry of X with annotation X, which suggests we have gone down the path of removing ourselves. This change avoids that possibility.	2018-06-12 11:52:03 +00:00
Bryan Boreham	318bb767a5	Merge pull request #3320 from weaveworks/manifest-tool-make Fix manifest-tool cmd in Makefile	2018-06-12 10:48:30 +01:00
Bryan Boreham	ad6148f0f6	Break out of kube rm peers loop if nothing changes Avoid getting into an infinite loop if some of the logic or underlying data is bad	2018-06-12 08:31:35 +00:00
Martynas Pumputis	8042d3f22a	Fix manifest-tool cmd in Makefile	2018-06-12 10:19:47 +02:00
Martynas Pumputis	c7259fc424	Make error "Weave is not running" less confusing when running on Kubernetes	2018-06-12 09:58:08 +02:00
Bryan Boreham	62c949df6e	Merge pull request #3316 from weaveworks/fix-makefile Fix $HOME usage in Makefile	2018-06-11 16:39:36 +01:00
Martynas Pumputis	8c7dc342e0	Fix $HOME var in Makefile	2018-06-11 17:23:22 +02:00
Martynas Pumputis	d15439aeac	Merge remote-tracking branch 'origin/2.3'	2018-06-11 16:39:03 +02:00
Martynas Pumputis	c19c64a990	Merge pull request #3305 from weaveworks/issues/3289-many-namespaces Make the ipset list size bigger	2018-06-11 16:36:26 +02:00
Bryan Boreham	8e374d9416	D'oh	2018-06-11 13:52:15 +00:00
Martynas Pumputis	49216ce365	Merge pull request #3307 from weaveworks/set-kube-netstatus Set Kubernetes NodeNetworkUnavailable to false when starting	2018-06-11 15:20:14 +02:00
Bryan Boreham	812c58297f	Merge pull request #3298 from weaveworks/issues/2924-preserve-src-ip-on-local 2924: Preserve the client source IP	2018-06-11 13:21:12 +01:00
Bryan Boreham	2a04df1049	Rename "kube-peers" to "kube-utils" It's now doing things like network status that are outside of the scope of "peers".	2018-06-11 11:22:07 +00:00
Martynas Pumputis	2eda624653	Merge pull request #3291 from weaveworks/withnetns-inproc Remove subprocess for changing netns	2018-06-05 16:49:37 +02:00
Martynas Pumputis	2f8aa7a351	Add random nonce to test ipset name to prevent race As ipset.New(...) can be called by two processes (weaver and weave-npc) at the same time, there is a possibility for a race when they both check the comment support. To prevent the race, we append a random nonce to the test ipset name.	2018-06-05 08:52:21 +02:00
Martynas Pumputis	b6115f0147	Address the PR comments - Track only local changes. - Add comment to the iptables rule which prevents SNAT'ing. - Rename the ipset to weaver-no-masq-local to prevent NPC from destroying it. - Fix comment about create/flush WEAVE-EXPOSE. - Add comment about reexpose being no-op if bridge hasn't been exposed. - Add comment that the feature is not only for Kubernetes. - Reuse the ipset instance.	2018-06-04 19:22:48 +02:00
Bryan Boreham	5ff22a1a77	Review feedback: tidied up function names	2018-06-04 13:28:28 +00:00
Martynas Pumputis	7fdf8fee13	Mention NO_MASQ_LOCAL opt in the docs	2018-06-04 14:08:24 +02:00
Martynas Pumputis	45a9ea666e	Add k8s integration test case for preserving client IP addr Also, increase timeout for smoke tests to 360 sec.	2018-06-04 14:08:24 +02:00
Martynas Pumputis	efd5d0e410	Add /client_ip to network-tester The endpoint is going to be used by --no-masq-local integration tests.	2018-06-04 14:08:24 +02:00
Martynas Pumputis	6dbe95a0b5	Add NO_MASQ_LOCAL to weave-kube/launch.sh One can enable the feature by setting NO_MASQ_LOCAL=1 among env vars of the weave-kube DaemonSet.	2018-06-04 14:08:24 +02:00
Martynas Pumputis	a0ec06a487	Destroy weave-no-masq-local ipset upon "weave reset"	2018-06-04 14:08:24 +02:00
Martynas Pumputis	ebf4b4b48a	Implement and start using NoMasqLocalTracker The tracker updates the "no-masq-local" ipset with CIDR ranges allocated by IPAM.	2018-06-04 14:08:24 +02:00
Martynas Pumputis	4f99efaaf4	Export tracker.RemoveCommon and tracker.Merge It's going to be used by NoMasqLocalTracker.	2018-06-04 14:08:24 +02:00
Martynas Pumputis	62c30d9130	Extern LocalRangeTracker interface with String method Cleaner approach than passing a tracker name to ipam/http.	2018-06-04 14:08:24 +02:00
Martynas Pumputis	21fb953d0f	Create weave-no-masq-local ipset The ipset is used to track locally allocated CIDRs. If requested, external traffic sent to pods within these CIDR ranges will avoid SNAT'ing (NYI).	2018-06-04 14:08:24 +02:00
Martynas Pumputis	27c98070e8	Move npc/ipset package to net/ipset It's going to be used by net/bridge.go.	2018-06-04 14:08:24 +02:00
Martynas Pumputis	039750a7fa	Re-expose weave bridge in EnsureBridge This ensures that all exposing-related iptables rules are created. As we do the re-expose, we need to clear the WEAVE-EXPOSE chain if such exists. Thus, we use ClearChain instead of NewChain to create the chain.	2018-06-04 14:06:09 +02:00
Bryan Boreham	9b0d1bd054	Set Kubernetes NodeNetworkUnavailable to false when starting	2018-05-26 14:06:57 +00:00
Bryan Boreham	4c1c2a5661	Add --max-list-size option for ipset lists and default it to 1024 for cases where the size is fixed by the kernel	2018-05-25 17:24:22 +00:00
Bryan Boreham	791d9aecfc	Extend k8s test to cover namespaceSelector and >10 Namespaces	2018-05-25 17:24:22 +00:00
Bryan Boreham	48aaac90fb	Merge pull request #3277 from weaveworks/ml-release-docs Add instruction for validating whether imgs were pushed for all platforms	2018-05-23 13:51:38 +01:00
Martynas Pumputis	bfaa3a3a92	Merge pull request #3278 from weaveworks/seeded-docs Add instructions for 'seeded by different peers' message	2018-05-22 17:23:06 +02:00
Martynas Pumputis	6dce685105	Merge remote-tracking branch 'origin/2.3'	2018-05-22 17:21:03 +02:00
Martynas Pumputis	8c4e33faef	Merge pull request #3301 from Nodraak/nodraak-doc [Docs] Improve the installation page concerning firewall	2018-05-22 17:14:19 +02:00
Adrien Chardon	81582b04f9	Add firewall warning on installation page	2018-05-16 14:23:35 +02:00
Marc Carré	dbcc72a6f6	Merge pull request #3299 from weaveworks/add-opencontainers-labels-to-dockerfiles Add org.opencontainers.image.* labels to Dockerfiles	2018-05-15 09:44:39 +01:00
Marc Carré	9f207f161a	Add org.opencontainers.image.* labels to Dockerfiles - This should ultimately help for image-to-code back references. - `org.label-schema.` labels are now deprecated, in favour of `org.opencontainers.image.` labels. See also: https://github.com/opencontainers/image-spec/blob/master/annotations.md#back-compatibility-with-label-schema - Git revision is now injected at `docker build` time.	2018-05-14 11:51:40 +01:00
Bryan Boreham	1ee4039681	Add build constraint for go1.10 onwards	2018-05-03 07:15:36 +01:00
Bryan Boreham	3203814940	Merge pull request #3283 from weaveworks/note-ip-forward Add note about ip forward setting	2018-05-02 13:58:32 +02:00
Bryan Boreham	acc8c33260	Merge pull request #3284 from weaveworks/docs-k8s-src-ip Add docs/k8s-src-ip.md	2018-05-02 13:58:15 +02:00
Bryan Boreham	22ecf505e3	Added note about security implications of enabling IP forwarding	2018-05-02 06:06:58 +01:00
Bryan Boreham	c2c14410d2	Remove subprocess for changing netns Now that Go 1.10 has removed the issue which made us do this.	2018-04-30 23:40:59 +01:00
Martynas Pumputis	ba578c91a7	Merge pull request #3268 from weaveworks/try-dep Convert vendoring from git submodules to copy, using 'dep'	2018-04-27 16:04:00 +02:00
Bryan Boreham	7b46391e30	Add vendor instructions	2018-04-27 14:34:49 +01:00
Bryan Boreham	ae551cafea	Run manifest-tool from a container image The source code has incompatible dependencies so we can't build it.	2018-04-27 14:34:49 +01:00
Bryan Boreham	672c770dbe	Rework /report handler to pull format from URL Otherwise test 150 would fail - Gorilla mux was not handling a newline in the format parameter. This way you also get a better error if you have an error in the parameter - instead of a 404.	2018-04-27 14:34:49 +01:00
Bryan Boreham	847046a225	Update to match upstream changes	2018-04-27 14:34:48 +01:00
Bryan Boreham	4da998ab45	Move to lower-case logrus import	2018-04-27 14:34:48 +01:00
Bryan Boreham	b534ea60f5	Copy dependencies into vendor dir, using dep	2018-04-27 14:34:48 +01:00
Bryan Boreham	549ccff5eb	Don't need to update submodules to build exes	2018-04-27 14:34:47 +01:00
Bryan Boreham	9cf6749b2e	Remove vendor submodules	2018-04-27 14:34:47 +01:00
Martynas Pumputis	d2999cf1d7	Add docs/k8s-src-ip.md	2018-04-24 14:02:29 +02:00
Bryan Boreham	391b55ceaf	Add note about ip forward setting	2018-04-23 14:24:44 +01:00
Bryan Boreham	e05345d3bb	Add instructions for 'seeded by different peers' message	2018-04-17 10:24:00 +01:00
Martynas Pumputis	67bd54e55d	Add instruction for validating whether imgs were pushed for all platforms	2018-04-10 12:41:24 +02:00