/routing ospf-v3 lsa print detail where originator=10.255.255.11
instance=default area=backbone type=router id=0.0.0.0 originator=10.255.255.11 sequence-number=0x80000233 age=919 checksum=0x5E3 options="V6|E|R" body=
flags=EXTERNAL
link-type=Point-To-Point iface-id=18 neighbor-iface-id=18 neighbor-routerId=10.255.255.201 metric=1
instance=default area=backbone type=intra-area-prefix id=0.0.0.0 originator=10.255.255.11 sequence-number=0x800000DC age=925 checksum=0x30EC options="" body=
referenced-LS-type=Router LSA
referenced-LS-ID=0
prefix=2a09:4c2:1f:ffff::/128 options=01000000 (LA)
prefix=2a09:4c2:1f:ff:91::/127 options=00000000
So both the linknet and the loopback seems to be advertised correctly, by BIRD. However, i'm unsure what the LA means here - but thats a Mikrotik subject, i suppose, so i'll go there and ask for help.
Again, thanks Ondrej and i'm very sorry for believing this was a BIRD issue :)
Best Regards
Anders Hansen