Hi,

I installed the phonenix release, and changed IPv4, IPv6 addresses and SIP port. Directory and dialplan should be default ones.
My phones are able to register when using just IPv4, and I can call from one to another.

When I try the same thing with IPv6, the call to other phone fails with [USER_NOT_REGISTERED], however I'm able to call 9999 and hear MOH.
Here you can find the log: http://pastebin.freeswitch.org/10757
Freeswitch is running on 10.80.62.40/2000:2::1
phones are 2000:2::1001 and 2000:2::1002

Am I doing something wrong? Maybe I forgot to configure something, but I can't see what it is.

Any hints are appreciated.