http://www.squid-cache.org/mail-archive/squid-users/200601/0664.html - problem with squid

http://lists.zooko.com/pipermail/p2p-hackers/2006-September/000227.html - good overview

http://lists.zooko.com/pipermail/p2p-hackers/2006-September/000229.html - ditto

http://www.onlamp.com/pub/a/onlamp/2003/04/03/linuxhacks.html - cheap ip takeover for two servers in one location, same subnet