When Vint Cerf and his friends at DARPA concocted a system that allowed for 4.3 billion IP addresses, it was never conceived that everyone's computer would be able to access the internet -- before the age when your telephone, fridge and air conditioning unit would too. The IPv4 system officially ran out of addresses last year, but fortunately the moment was prepared for: June 8th 2011 was "World IPv6 Day," where a host of sites including
