I noticed this today as well. I want to second that these lines should be deleted. I believe this sysctl has been deprecated for some time. These lines have been or will be removed from Debian:
http://groups.google.com/group/linux.debian.bugs.dist/browse_thread/thread/98efcd47db7c66ce -- ip_always_defrag is invalid https://bugs.launchpad.net/bugs/204971 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
