As zaphoyd said, Verizon doesn't default to IPv6. Dual-stack devices should be using the Happy Eyeballs [1,2] algorithm to choose whether to use IPv4 or IPv6.

As zaphoyd said, Verizon doesn't default to IPv6. Dual-stack devices should be using the Happy Eyeballs [1,2] algorithm to choose whether to use IPv4 or IPv6. [1] http://tools.ietf.org/html/rfc6555 http://tools.ietf.org/html/rfc6555 [2] http://en.wikipedia.org/wiki/Happy_Eyeballs http://en.wikipedia.org/wiki/Happy_Eyeballs