I am half tempted to beg you to figure out what I can NOT get figured out... IPv6 with PFSense 2.1RC0 Tue Jul 23 build still fails with IPv6 on my LAN, and WAN it feels like, especially when I have SQUID running locally.
When enabled it wants to assign FE: addressing which is a non-routable address from what I can find. The LAN is set to track WAN, but refuses to assign the proper addresses. Changing it at all on my box, will result in the WAN option disappearing for good, till the OS is re-installed.
Always fail the IPv6 tests for some reason.