> Maybe not in the strict sense, but it kind of has.

I challenge you to find:

1. A hotel in the US that provides IPv6. I have NEVER been in one, and I once stayed in a hotel (in Mountain View, CA) that was giving out public IPv4 addresses.

2. An easier task: a SIP provider that has IPv6 (in the US). You know, for the VoIP that is supposed to be a poster child of end-to-end connectivity.