[18.03] Possible race on ingress programming #2181
Merged
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backport of #2178 for the bump18.03 branch
no conflicts
Make sure that iptables operations on ingress
are serialized.
Before 2 racing routines trying to create the ingress chain
were allowed and one was failing reporting the chain as
already existing.
The lock guarantees that this condition does not happen anymore
Signed-off-by: Flavio Crisciani flavio.crisciani@docker.com
(cherry picked from commit 7bb62d0)
Signed-off-by: Sebastiaan van Stijn github@gone.nl