Comment 11 for bug 2017889

That's interesting.

In your packet capture I cannot see any NA messages following the NS messages.
Which routes are configured in the instance itself?
Do you know from where your instances gets their L2 resolution?
Can you share your proxy_ndp configuration?

In my scenario proxy_arp/ndp is enabled:

net.ipv4.ip_forward = 1
net.ipv6.conf.all.forwarding = 1
net.ipv4.conf.br-ex.proxy_arp = 1
net.ipv6.conf.br-ex.proxy_ndp = 1

br-ex has addresses assigned:

14: br-ex: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN group default qlen 1000
    link/ether 7e:e8:52:8b:44:4b brd ff:ff:ff:ff:ff:ff
    inet 169.254.0.1/32 scope global br-ex
       valid_lft forever preferred_lft forever
    inet6 fd53:d91e:400:7f17::1/128 scope global
       valid_lft forever preferred_lft forever

To test with the BGP driver I had reconfigured a single node, I will now try to reconfigure the whole cluster. Should not make any difference, but who knows...