The iptables package doesn't remove /etc/defaults/iptables-rules. apt- file search doesn't report any package that wants to clobber it. Apparently some other package deleted it, but that's going to be very to track down, and very difficult to duplicate.
-- iptables config lost after upgrade https://launchpad.net/bugs/49821 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
