Comment 1 for bug 1977669

"Don't suppress localport traffic directed to external port" (https://github.com/ovn-org/ovn/commit/1148580290d0ace803f20aeaa0241dd51c100630) does not appear super trivially back-portable due to depending on among other things logic from https://github.com/ovn-org/ovn/commit/6c8b9a13253248318c666159e486aab0e6c477ff.

For backporting purposes we also need to backport the 21.06 branch’s cherry-pick which has extra logic for flow cleanup/deletion that wasn't needed in the master patch - that commit is https://github.com/ovn-org/ovn/commit/0e70fe417ea0413bef8a1b2803707e27e231f12a

I *think* it could back ported but would need understanding more thoroughly and partly rewriting.