I have the same scenario of IPv6 + bind9 + dnssec. b-coleman's suspicion that this is related to debian bug# 578052 seems plausible. I upgraded my affected machine to Precise (12.04), and the problem has stopped.
-- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to bind9 in Ubuntu. https://bugs.launchpad.net/bugs/807153 Title: DNSSEC-enabled named sometimes does not die on "service bind9 stop" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bind9/+bug/807153/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
