Really? Facebook runs their datacenters with only IPv6. Comcast has deployed IPv6 to over 60% of their customers, and that should be >75% by the end of the year

Really? Facebook runs their datacenters with only IPv6. Comcast has deployed IPv6 to over 60% of their customers, and that should be >75% by the end of the year. TMo and Verizon have huge amounts of IPv6 deployment. TMo android + windows phone devices are IPv6 only. iOS 9 if it supports 464XLAT will increase that hugely. There are soon going to be no IPv4 addresses left to have.