Comment 7 for bug 2017889

Hey Tomas, thanks for your reply.

Actually I'm also adding the instance IPs into ndp_proxy.

However, this seems to be not sufficient as we also need NDP resolution for the reply from the instance to the outside world.
So we would need another entry in ndp_proxy for the next-hop of the instance.

I tested that with an instance on a provider network and the BGP driver (not modified) in use, while ARP for IPv4 works fine, NDP for IPv6 does not.

Furthermore, I saw in the code [1] that NDP entries are only created for specific port types, not for VM_VIF ports.

Do we require a special instance configuration to make this work?
If not, maybe you can confirm that behavior in your environment?

[1] https://opendev.org/openstack/ovn-bgp-agent/src/commit/e697e350af158de68fbc4f52e784d8d4a8c922ab/ovn_bgp_agent/drivers/openstack/ovn_bgp_driver.py#L567