bugfix: fix iptables masquerade local pod traffic error #49
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mars1024
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Pull Request Description
Describe what this PR does / why we need it
Exist iptables rules will masquerade the traffic from remote pods to local pods, which is not supposed to be done.
Does this pull request fix one issue?
NONE
Describe how you did it
Ignore the traffic from remote pods to local pods by container host interface name. To do this, interface name "xxx_h" should be changed to "h_xxx", because iptables cannot recognize interfaces by suffix.
Describe how to verify it
Use tcpdump in overlay pod, the traffic from remote overlay pods to local pods should not be masqueraded anymore.
Special notes for reviews
Only new pod's traffic with "h_xxx" interface will be fixed, old pod with "xxx_h" named host interface should be recreate to fix this issue.