Automated cherry pick of #6193: Fix that AntreaProxy could unintentionally delete conntrack #6405
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hongliangl
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…n zone 0 (antrea-io#6193) This is a subsequent PR for antrea-io#5112. As mentioned in antrea-io#5112: > Due to the restriction of the go library 'netlink', there is no API to specify a target zone. As a result, when deleting a stale conntrack entry with a destination port (such as NodePort), not only will the conntrack entry whose destination port is the port added by AntreaProxy be deleted, but also the conntrack entry that is not added by AntreaProxy will be deleted. This behavior is unexpected, as only the conntrack entries added by AntreaProxy should be deleted. This PR resolves the issue by integrating a CT zone filter, now available in the latest Go library `netlink`. Leveraging this feature, AntreaProxy can accurately delete stale UDP conntrack entries. Signed-off-by: Hongliang Liu <lhongliang@vmware.com>
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Cherry pick of #6193 on release-1.15.
#6193: Fix that AntreaProxy could unintentionally delete conntrack
For details on the cherry pick process, see the cherry pick requests page.