I had this in my vlan config:
configure vlan DC_Techs router-discovery ipv6 add dnssl dc.local
configure vlan DC_Techs router-discovery ipv6 other-config-flag on
enable router-discovery ipv6 vlan DC_Techs
[/code]together with other things, like "add rdnss", "add prefix", etc, for IPv6 autoconfiguration
Suddenly - after the upgrade - I get errors in my logs like:
Did a "show router-discovery DC_Techs" on my 8806s - looks fine, has "dc.local" showing on both.
Thought, "ok, let's just kill the dnssl entry" by doing:
# configure vlan DC_Techs router-discovery ipv6 delete dnssl dc.local
Error: The specified DNS Suffix is not configured[/code]Say what? OK, "configure.... delte dnssl all" - that worked.
Tried to add and delete by name - same thing.
I still have a pair of 8806s running 18.104.22.168 where I can add and delete dnssl domain names by name just fine, and where neither errors happen at all, and "sh router-discovery vlan DC_Techs" yields the same output as on the 22.214.171.124 BDs.
I know that Windows doesn't even understand IPv6's dnssl advertisements, and we usually hand-roll our Unix/Linux boxes, so it doesn't matter all that much - I just wanted to point out something rather odd.
Adding and deleting rdnss entries by specifying the addresses works just fine.