Ipv6

http://www.google.com/intl/en/ipv6/ Read here if you have IPv6 connectivity, you can have google services served via IPv6 (i.e., google will reply with AAAA records on queries made from your DNS server)

http://www.sixxs.net/wiki/Routers SixXS – global v6 network of peering exchange points

http://www.potaroo.net/tools/ipv4/index.html notes about IPv4 extinction and a move to IPv6