Is this bug really still unresolved? There are various guides online showing how to configure DDNS with ISC bind, that suggests that upstream does support it. On the other hand, I've tried to follow the instructions from a couple of those guides and it doesn't actually work - the logs show no evidence of communication between dhcpd and named. It is working fine for IPv4, just not IPv6 -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org