[ipv6-wg] Interest in IPv6-only world?

All, I saw this today: http://wiki.test-ipv6.com/wiki/Main_Page And I was thinking about the seeming increase in interest recently in researching the realities of an IPv6-only world. According to Cisco's IPv6 stats site: http://6lab.cisco.com/stats/ We're a long way from having most content available over IPv6... but not *that* long, if we can take the 40% numbers seriously. So I guess this is mostly a "setting the groundwork" for now, but maybe not. Does anyone actually run an IPv6-only network now, or is thinking about it? (As in, without a gateway to the IPv4 world.) Cheers, -- Shane