Comcast is going for a pure IPv6 core network, they are currently at 60% of their customers getting an IPv6 address of some sort (cable modem or even cable box)

Comcast is going for a pure IPv6 core network, they are currently at 60% of their customers getting an IPv6 address of some sort (cable modem or even cable box). T-Mobile's network is IPv6 as well. Especially for customer devices that support 464XLAT: https://sites.google.com/site/tmoipv6/464xlat https://sites.google.com/site/tmoipv6/464xlat There is a LOT of support for IPv6, and many companies like Facebook are finding that IPv6 actually offers better performance end to end for their users. Take a look at this NANOG presentation: https://www.youtube.com/watch?v=EfjdOc41g0s https://www.youtube.com/watch?v=EfjdOc41g0s