https://bugzilla.redhat.com/show_bug.cgi?id=689337
http://www.openwall.com/lists/oss-security/2011/03/21/4
http://www.openwall.com/lists/oss-security/2011/03/21/1
http://www.openwall.com/lists/oss-security/2011/03/18/15
http://marc.info/?l=netfilter-devel&m=130036157327564&w=2
http://marc.info/?l=netfilter&m=129978077509888&w=2
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=961ed183a9fd080cf306c659b8736007e44065a5
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39