I found a very nice HOWTO (for the opposing firewall, name shall not be mentioned). Which details how to get the ipv6 working on multiple interfaces. I did find this article here:
https://forum.opnsense.org/index.php?topic=17720.0
Alas, it doesn't really detail how to get everything working. I had it working great on the 'other' firewall (it rhymes with rents, and has a gate in a certain name), however I really prefer opnsense.
I have created a GitHub page, which references the 'original' document which solved this issue. I am linking here so you don't have to manually figure everything out.
https://github.com/symgryph/multiple-ipv6-att-opnsense
https://forum.opnsense.org/index.php?topic=17720.0
Alas, it doesn't really detail how to get everything working. I had it working great on the 'other' firewall (it rhymes with rents, and has a gate in a certain name), however I really prefer opnsense.
I have created a GitHub page, which references the 'original' document which solved this issue. I am linking here so you don't have to manually figure everything out.
https://github.com/symgryph/multiple-ipv6-att-opnsense
"