I can confirm that this bug is still present in 12.04 (new install, not an upgrade).
The workaround is to add the following to the end of /etc/ntp.conf and restart ntp: # Prevent it flooding syslog with error messages: interface ignore ipv6 (assuming that you're on an IPv4 network) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/700492 Title: ntp complains about ipv6 errors every 5 minutes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/700492/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs