On Wednesday, April 27, 2016, Aaron Hopkins <[email protected]> wrote: > On Wed, 27 Apr 2016, Baptiste Jonglez wrote: > > While doing statistics on the participants of a public DHT, I was >> surprised to see some IP addresses that are not present in the DFZ: >> > > I believe those are used by T-mobile's 464XLAT (RFC 6877) implementation. > > Recent Android on T-mobile is IPv6-only and has no ability to connect to > raw IPv4 addresses. T-mobile's DNS servers are only asked by these devices > to translate hostnames to IPv6 addresses. If they can't find an IPv6 > address, they will look up the IPv4 address for a hostname, and pack it > into > the bottom 32 bits of an IPv6 address that routes to a IPv6-to-IPv4 NAT > device. > > 2607:7700:0:25::4e00:605b >> > > 4e00:605b -> 78.0.96.91 > > -- Aaron >
Apple has also required the ability for ipv6-only operations https://developer.apple.com/news/?id=08282015a
