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Jana Radhakrishnan 6cff09f710 Check existence of network chain before creating
We check for existence of all filter rules in
overlay driver before creating it. We should
also do this for chain creation, because even though
we cleanup network chains when the last container
stops, there is a possibility of a stale network
chain in case of ungraceful restart.

Also cleaned up stale bridges if any exist due to
ungraceful shutdown of daemon.

Signed-off-by: Jana Radhakrishnan <mrjana@docker.com>
2015-12-22 11:22:03 -08:00
libnetwork Check existence of network chain before creating 2015-12-22 11:22:03 -08:00