diff --git a/README.md b/README.md
index 453f3ccf..2e1adff8 100644
--- a/README.md
+++ b/README.md
@@ -55,7 +55,7 @@ it locally to control a weave network on a remote host.
 
 ## Quick Start Screencast
 
-<a href="http://youtu.be/k6r7yuSr0hE" alt="Click to watch the screencast" target="_blank">
+<a href="https://youtu.be/BF9YJSPQUcY" alt="Click to watch the screencast" target="_blank">
   <img src="/docs/hello-screencast.png" />
 </a>
 
diff --git a/circle.yml b/circle.yml
index 7b23b9f1..4bc4d29b 100644
--- a/circle.yml
+++ b/circle.yml
@@ -41,9 +41,9 @@ test:
         parallel: true
     - cd $SRCDIR/test; ./gce.sh setup:
         parallel: true
-    - cd $SRCDIR/test; . ./gce.sh hosts; ./setup.sh:
+    - cd $SRCDIR/test; eval $(./gce.sh hosts); ./setup.sh:
         parallel: true
-    - cd $SRCDIR/test; . ./gce.sh hosts; export COVERAGE=true; ./run_all.sh:
+    - cd $SRCDIR/test; eval $(./gce.sh hosts); export COVERAGE=true; ./run_all.sh:
         parallel: true
         timeout: 300
   post:
diff --git a/docs/hello-screencast.png b/docs/hello-screencast.png
index 70ac6ed3..1833429e 100644
Binary files a/docs/hello-screencast.png and b/docs/hello-screencast.png differ
diff --git a/nameserver/nameserver.go b/nameserver/nameserver.go
index 5a2e7cb0..c6822bec 100644
--- a/nameserver/nameserver.go
+++ b/nameserver/nameserver.go
@@ -137,6 +137,7 @@ func (n *Nameserver) ContainerDied(ident string) error {
 }
 
 func (n *Nameserver) PeerGone(peer *router.Peer) {
+	n.infof("peer gone %s", peer.String())
 	n.Lock()
 	defer n.Unlock()
 	n.entries.filter(func(e *Entry) bool {
diff --git a/proxy/create_container_interceptor.go b/proxy/create_container_interceptor.go
index 9381d983..6fa255f8 100644
--- a/proxy/create_container_interceptor.go
+++ b/proxy/create_container_interceptor.go
@@ -25,9 +25,9 @@ type createContainerRequestBody struct {
 	MacAddress string             `json:"MacAddress,omitempty" yaml:"MacAddress,omitempty"`
 }
 
-// Replacement for docker.NoSuchImage, which does not contain the
-// image name, which in turn breaks docker clients post 1.7.0 since
-// they expect the image name to be present in errors.
+// ErrNoSuchImage replaces docker.NoSuchImage, which does not contain the image
+// name, which in turn breaks docker clients post 1.7.0 since they expect the
+// image name to be present in errors.
 type ErrNoSuchImage struct {
 	Name string
 }
@@ -48,7 +48,9 @@ func (i *createContainerInterceptor) InterceptRequest(r *http.Request) error {
 		return err
 	}
 
-	if cidrs, ok := i.proxy.weaveCIDRsFromConfig(container.Config); ok {
+	if cidrs, err := i.proxy.weaveCIDRsFromConfig(container.Config, container.HostConfig); err != nil {
+		Log.Infof("Ignoring container due to %s", err)
+	} else {
 		Log.Infof("Creating container with WEAVE_CIDR \"%s\"", strings.Join(cidrs, " "))
 		if container.HostConfig == nil {
 			container.HostConfig = &docker.HostConfig{}
diff --git a/proxy/create_exec_interceptor.go b/proxy/create_exec_interceptor.go
index 3a1af205..8b89a53a 100644
--- a/proxy/create_exec_interceptor.go
+++ b/proxy/create_exec_interceptor.go
@@ -30,8 +30,10 @@ func (i *createExecInterceptor) InterceptRequest(r *http.Request) error {
 	}
 
 	_, hasWeaveWait := container.Volumes["/w"]
-	cidrs, hasCIDRs := i.proxy.weaveCIDRsFromConfig(container.Config)
-	if hasCIDRs && hasWeaveWait {
+	cidrs, err := i.proxy.weaveCIDRsFromConfig(container.Config, container.HostConfig)
+	if err != nil {
+		Log.Infof("Ignoring container %s due to %s", container.ID, err)
+	} else if hasWeaveWait {
 		Log.Infof("Exec in container %s with WEAVE_CIDR \"%s\"", container.ID, strings.Join(cidrs, " "))
 		cmd := append(weaveWaitEntrypoint, "-s")
 		options.Cmd = append(cmd, options.Cmd...)
diff --git a/proxy/proxy.go b/proxy/proxy.go
index 214bff22..5f1bbb06 100644
--- a/proxy/proxy.go
+++ b/proxy/proxy.go
@@ -2,6 +2,7 @@ package proxy
 
 import (
 	"crypto/tls"
+	"errors"
 	"fmt"
 	"net"
 	"net/http"
@@ -26,6 +27,10 @@ var (
 	containerCreateRegexp = regexp.MustCompile("^(/v[0-9\\.]*)?/containers/create$")
 	containerStartRegexp  = regexp.MustCompile("^(/v[0-9\\.]*)?/containers/[^/]*/(re)?start$")
 	execCreateRegexp      = regexp.MustCompile("^(/v[0-9\\.]*)?/containers/[^/]*/exec$")
+
+	ErrInvalidNetworkMode = errors.New("--net option")
+	ErrWeaveCIDRNone      = errors.New("WEAVE_CIDR=none")
+	ErrNoDefaultIPAM      = errors.New("--no-default-ipam option")
 )
 
 type Config struct {
@@ -191,14 +196,22 @@ func (proxy *Proxy) listen(protoAndAddr string) (net.Listener, string, error) {
 	return listener, fmt.Sprintf("%s://%s", proto, addr), nil
 }
 
-func (proxy *Proxy) weaveCIDRsFromConfig(config *docker.Config) ([]string, bool) {
+func (proxy *Proxy) weaveCIDRsFromConfig(config *docker.Config, hostConfig *docker.HostConfig) ([]string, error) {
+	if hostConfig != nil &&
+		hostConfig.NetworkMode != "" &&
+		hostConfig.NetworkMode != "bridge" {
+		return nil, ErrInvalidNetworkMode
+	}
 	for _, e := range config.Env {
 		if strings.HasPrefix(e, "WEAVE_CIDR=") {
 			if e[11:] == "none" {
-				return nil, false
+				return nil, ErrWeaveCIDRNone
 			}
-			return strings.Fields(e[11:]), true
+			return strings.Fields(e[11:]), nil
 		}
 	}
-	return nil, !proxy.NoDefaultIPAM
+	if proxy.NoDefaultIPAM {
+		return nil, ErrNoDefaultIPAM
+	}
+	return nil, nil
 }
diff --git a/proxy/start_container_interceptor.go b/proxy/start_container_interceptor.go
index 1a4de456..7353c07e 100644
--- a/proxy/start_container_interceptor.go
+++ b/proxy/start_container_interceptor.go
@@ -21,9 +21,9 @@ func (i *startContainerInterceptor) InterceptResponse(r *http.Response) error {
 		return err
 	}
 
-	cidrs, ok := i.proxy.weaveCIDRsFromConfig(container.Config)
-	if !ok {
-		Log.Debug("No Weave CIDR, ignoring")
+	cidrs, err := i.proxy.weaveCIDRsFromConfig(container.Config, container.HostConfig)
+	if err != nil {
+		Log.Infof("Ignoring container %s due to %s", container.ID, err)
 		return nil
 	}
 	Log.Infof("Attaching container %s with WEAVE_CIDR \"%s\" to weave network", container.ID, strings.Join(cidrs, " "))
diff --git a/test/210_dns_cross_hosts_test.sh b/test/210_dns_cross_hosts_test.sh
index 1d936e3e..7f134654 100755
--- a/test/210_dns_cross_hosts_test.sh
+++ b/test/210_dns_cross_hosts_test.sh
@@ -36,6 +36,31 @@ start_container_with_dns $HOST1 --name=baz
 assert_dns_record $HOST1 baz foo.weave.local $FOO_IPS
 assert_dns_record $HOST1 baz bar.weave.local $BAR_IPS
 
+# now stop and start the containers a bunch of times
+# this tests gossip dns tombstone behaviour
+for i in $(seq 5); do
+    for host in $HOSTS; do
+        proxy docker_on $host kill foo 1>/dev/null
+        proxy docker_on $host kill bar 1>/dev/null
+    done
+
+    assert_no_dns_record $HOST1 baz foo.weave.local
+    assert_no_dns_record $HOST1 baz bar.weave.local
+
+    FOO_IPS=
+    BAR_IPS=
+    for host in $HOSTS; do
+        proxy docker_on $host start foo 1>/dev/null
+        proxy docker_on $host start bar 1>/dev/null
+
+        FOO_IPS="$FOO_IPS $(container_ip $host foo)"
+        BAR_IPS="$BAR_IPS $(container_ip $host bar)"
+    done
+
+    assert_dns_record $HOST1 baz foo.weave.local $FOO_IPS
+    assert_dns_record $HOST1 baz bar.weave.local $BAR_IPS
+done
+
 # resolution for names mapped to multiple addresses
 weave_on $HOST2 dns-add $C2a c2 -h $NAME2
 weave_on $HOST2 dns-add $C2b c2 -h $NAME2
diff --git a/test/660_proxy_ipam_test.sh b/test/660_proxy_ipam_test.sh
index 0e27b5ec..24c37679 100755
--- a/test/660_proxy_ipam_test.sh
+++ b/test/660_proxy_ipam_test.sh
@@ -26,13 +26,21 @@ start $HOST1 --name=auto
 start $HOST1 --name=none       -e WEAVE_CIDR=none
 start $HOST2 --name=zero       -e WEAVE_CIDR=
 start $HOST2 --name=no-default
+start $HOST1 --name=bridge     --net=bridge
+start $HOST1 --name=host       --net=host
+start $HOST1 --name=other      --net=container:auto
 
 AUTO=$(container_ip $HOST1 auto)
 ZERO=$(container_ip $HOST2 zero)
+BRIDGE=$(container_ip $HOST1 bridge)
+OTHER=$(container_ip $HOST1 other)
 assert_raises "proxy exec_on $HOST1 auto $PING $ZERO"
 assert_raises "proxy exec_on $HOST2 zero $PING $AUTO"
+assert_raises "proxy exec_on $HOST2 zero $PING $BRIDGE"
+assert_raises "proxy exec_on $HOST2 zero $PING $OTHER"
 
 assert_no_ethwe $HOST1 none
 assert_no_ethwe $HOST2 no-default
+assert_no_ethwe $HOST1 host
 
 end_suite
diff --git a/test/gce.sh b/test/gce.sh
index 192af733..dd1cb63b 100755
--- a/test/gce.sh
+++ b/test/gce.sh
@@ -5,7 +5,7 @@
 # ./gce.sh destroy - tear down the VMs
 # ./gce.sh make_template - make a fresh VM template; update TEMPLATE_NAME first!
 
-set -ex
+set -e
 
 KEY_FILE=/tmp/gce_private_key.json
 SSH_KEY_FILE=$HOME/.ssh/gce_ssh_key
@@ -20,7 +20,7 @@ if [ -n "$CIRCLECI" ]; then
 fi
 
 # Setup authentication
-gcloud auth activate-service-account --key-file $KEY_FILE
+gcloud auth activate-service-account --key-file $KEY_FILE 1>/dev/null
 gcloud config set project $PROJECT
 
 function vm_names {
@@ -120,9 +120,9 @@ function hosts {
 		hosts="$hostname $hosts"
 		args="--add-host=$hostname:$(internal_ip $name) $args"
 	done
-	export SSH=ssh
-	export HOSTS="$hosts"
-	export WEAVE_DOCKER_ARGS="$args"
+	echo export SSH=ssh
+	echo export HOSTS=\"$hosts\"
+	echo export WEAVE_DOCKER_ARGS=\"$args\"
 }
 
 case "$1" in