AT&T and IPv6

[jcdick1]

I recently upgraded my router to 22.1 and also got AT&T fiber.  My RG is in passthrough mode so my OPNsense router gets the public IP.

I'd like to get IPv6 working properly, and have found a couple of threads from a year or more ago regarding changes to the dhcp6 conf file for multiple ia-pd and id-assoc entries to get multiple /64 delegations, for pfsense.

https://forum.netgate.com/topic/153288/multiple-ipv6-prefix-delegation-over-at-t-residential-gateway-for-pfsense-2-4-5

https://forums.att.com/conversations/att-fiber-equipment/ipv6-prefix-delegation-to-3rd-party-router-not-working-2020-edition/5e98da19fd08354359ccd447?commentId=5e9b3ea5758fed7722fd4361&replyId=5eb1a6b372a09d7a3fc8f1fb

I just wanted to check with anyone who might be able to confirm that this is proper for OPNsense 22.1 before I go mucking about in the conf files manually.

Thanks!

[jeffn2001]

I hope you post some updates.
I've been trying to follow the instructions, but no luck.
If you say you're successful, then that would give me hope :)

[motoridersd]

Did you figure it out? I tried some quick configs and couldn't get IPV6 to work. Just got ATT Fiber today.

[lrosenman]

you can ONLY get ONE of the 8 PD's with the current opnsense setup.

[Vesalius]

Might be the same but here is another data point to read over that also includes a reference to OPNsense 22.1.

https://github.com/lilchancep/att-pfsense-ipv6

[nomka]

Might be the same but here is another data point to read over that also includes a reference to OPNsense 22.1.

https://github.com/lilchancep/att-pfsense-ipv6

Thanks for sharing!

Since this is the first result for a google search for "att ipv6", just wanted to report back that I did bite the bullet manage to use the very well-written instructions in the link to get IPv6 working behind an AT&T RG in passthrough mode, despite the inane default behavior of only passing through one /64.

It requires some SSHing and manual config tuning but overall was painless.

OPNsense 22.7.6-amd64 w/ Arris RG