From 3ef97f0c7c697cf80076f5f0e520bd12ae0593d5 Mon Sep 17 00:00:00 2001
From: KevDG <kevin@dubourg.info>
Date: Thu, 20 Aug 2020 15:15:44 +0200
Subject: [PATCH] Workaround to fix ipset conflict with iptables

Sleep before ipset destroy in startup, otherwise the operation can
sometimes fail - see https://github.com/weaveworks/weave/issues/3847
---
 prog/weave-kube/init.sh | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/prog/weave-kube/init.sh b/prog/weave-kube/init.sh
index 232fda82..6ff7916c 100755
--- a/prog/weave-kube/init.sh
+++ b/prog/weave-kube/init.sh
@@ -21,6 +21,8 @@ xt_set_exists() {
     fi
     iptables -w -F WEAVE-KUBE-TEST
     iptables -w -X WEAVE-KUBE-TEST
+    # delay to allow kernel to clean up - see https://github.com/weaveworks/weave/issues/3847
+    sleep 1
     ipset destroy weave-kube-test
     [ -z "$NOT_EXIST" ] || (echo "\"xt_set\" does not exist" >&2 && return 1)
 }