Version 20090528 is available upstream. Please consider updating!
It seems that version 20090528 is available upstream, while the latest version in the Gentoo tree is 2009.05.28. You think this warning is false? Read more about it here.
These are patterns (protocol definitions) for the Linux layer 7 packet
classifier (l7-filter). To use them, you need the l7-filter userspace version
available trough ebuild tree as net-misc/l7-filter and net-firewall/iptables
built with netlink USE flag.