[release/v0.9] Disable hostname lookup on chain exists check #1997
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Without `-n`, iptables will attempt to lookup hostnames for IP addresses, which can slow down the call dramatically. Since we don't need this, and generally don't even care about the output, use the `-n` flag to disable this. Signed-off-by: Brian Goff <cpuguy83@gmail.com> (cherry picked from commit 8dce207) Signed-off-by: Andrew Hsu <andrewhsu@docker.com>
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mavenugo
approved these changes
Oct 23, 2017
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backport fix:
with cherry-pick git commit 8dce207
cherry-pick when it clean