My ISP provides native IPv6 and it works great when I connect directly with my macbook to the ethernet port. I get a ipv6 assigned and all IPv6-only sites works great.
But when connecting through my Netgear WNR3500L router (running Tomato Firmware v1.28.7496-Toastman) IPv6 enabled sites won't work.
How would I configure my router for this to work? I don't have any "assigned/routed prefix" which the "native ipv6" settings in Tomato require, nor did I receive any settings from my ISP (it just worked).