Stuff to do Routing socket filters many tools in userland are only interested in interface state changes bgpd produces an insane amount of messages dhclient uses 10-30% CPU time if bgpd couples its FIB Cleanup the mbuf API madness create a secure alternative to the current madness at the moment way to many side effects cause crashes cleanup code, especially incoming path Replace patricia tree with a more performing alternative original patricia tree was developed for a VAX current CPU work differently, memory access is expensive