Any hardware/software routers that support Full Cone NAT? [closed]

i'm trying to get Teredo to function on my machine.

Most routers, it seems, refuse to forward packets from any host other than the one i specifically connected to first. Teredo requires full Cone NAT in order to function.

Does any router, hardware or software, allow full cone NAT?

Is this an oversight by the designers of Teredo that nobody, in practice, can use it?

i've tried

• m0n0wall
• pfsense
• D-Link
• Linksys
• SMC

Solution 1:

Some routers have a "gaming mode" that will turn on full cone NAT

Solution 2:

I've never had Teredo fail behind any NAT, even dodgy old Checkpoint.

I don't have much more info then that as all the Linux NAT's I use now have 6to4 enabled and advertised giving native IPv6 to clients.