Kevin Day/Your.org tried that with "The Great IPv6 Experiment" offering free porn vids over v6 and instructional cooking videos over v4. That folded up even before the first Google IPv6 Implementors Conference in 2009, and only now appears to have had that gear returned as an actual pay-porn site with IPv6 connectivity. Albeit the free porn wasn't at issue, but rather getting all their gear supporting v6 properly (as per the last few posts on their now defunct mailing list). Guess all that gear works now for them.

Hotel catering fail more likely.

D-link DIR-615 hardware rev C1

no ipv6 firewall rules, but does native/static tunnel/6to4, and announces a /64 to your wired lan/wireless

ftp://ftp.dlink.com/Gateway/dir615_revC/Manual/dir615_revC_manual_300.pdf start at their page 48, does native, pppoe, 6to4, 6in4

Somehow I doubt /. operates on a residential network, which is mostly what appears to be listed on the sixxs link.

There are US based colo/transit providers, not listed on that page, that already make IPv6 natively available to customers.

D-Link DIR-615 Hardware Revision C

http://www.tunnelbroker.net/forums/index.php?topic=296.0

I bought 2, they work mint both for native and tunneled.