Moved to AT&T Fiber, tunnel broken

[BiloxiGeek]

Recently moved from a cable modem with a tunnel setup that was working to AT&T fiber and now I can't get the tunnel working.  I've put the fiber modem (BGW320) into passthrough mode, disabled the IPv6 and it's firewall.

I got this set this up on a Netgate pfSense appliance (SG2100) and it was working just fine on the cable modem.  I've poked around in the pfSense and I don't see anything that seems to be set differently now or needs to be set differently. Is there something about this fiber modem that will block a tunnel from working?

[BiloxiGeek]

I've come to the conclusion that AT&T actively blocks all protocol 41 packets upstream from the fiber modem for residential internet. Doesn't seem to be any way around that at least as far as I've found.  I spent an hour or more chatting with support and after finally teaching the tech what 41 is for and why it's needed for 6in4 tunnels they came to the conclusion that's just how the network is and they can't allow the packets through.

Since it's AT&T I suspect that's so they can charge extra by making customers switch to business accounts and/or get static IP setup.