On June 8, Facebook, Google, Yahoo, Akamai, Limelight Networks and the Internet Society will all fire up Internet Protocol, IPv6, for 24 hours, in large part to see what breaks. IPv6 is the replacement addressing scheme for the current IPv4. http://ipcommunications.tmcnet.com/topics/ip-communications/articles/149956-june-8-test-ipv6-will-test-what-breaks.htm
