AW: FreeBSD does not reply to IPv6 Neighbor Solicitations

[Lutz Donnerhacke]

> I’d start by checking netstat -s -p icmp6 and netstat -s -p ip6  for
> any suspicious counter updates.

Great idea. It points me tot he most stupid error I could make.

Instead of 
  ifconfig_lagg140_aliases="inet6 2a01:75c0:1000:140::/64 anycast"
I wrote
  ifconfig_vlan140_aliases="inet6 2a01:75c0:1000:140::/64 anycast"
so the IPv6 address was not set after reboot.

This fails to get noticed, due the long lifetime of the announced prefix.
(the error has been visible since a few days only, I had no time to investigate)

So I can confess, plain 12.2-STABLE is no broken.