So I checked Fry's again today because my order with D-Link directly is in infinite backorder. They had 3 returns of this, and I picked up 2 (1 for work testing, 1 for home upgrade).
Here are some images of the interface and setting up the IPv6 connections (native static, 6in4, 6to4): http://deus-exmachina.net/~broquea/615/
When using the 6in4 for our tunnels with this appliance (which I've tested, and seen working) follow the example in http://deus-exmachina.net/~broquea/615/615-HE-tunnel.PNG
. Just use your tunnel information available under the Tunnel Details page. There is even an option in this model, to let external hosts IPv4 ping the router (simple check-box, and should make our system be able to ping you).
In my example screen shot, I was testing the appliance behind another firewall appliance that hands out RFC IPV4 addresses, and passes Protocol41 already, so that was an ugly double-NAT like test that still worked. So when YOU fill out local IPv4, make sure it is the IP address your ISP assigns the appliance's WAN interface.
(EDIT) - An important note about this, is there are no provisions for IPv6 firewall rules. Whereas with a Linux machine or something, you at least had ip6tables, this has nothing. It will function as an IPv6 router with no filtering. So make sure hosts are secure themselves, etc etc.
(EDIT 2) - The unit will also take that /64 and announce it over the wireless with any additional configuration. Plop in that /64 and its available over wired and wireless.