In my specific situation I was able to use this WAS-110 to get full speed PPPoE from my fiber provider (Bell).
https://pon.wiki/guides/masquerade-as-the-bce-inc-giga-hub-2...
In my specific situation I was able to use this WAS-110 to get full speed PPPoE from my fiber provider (Bell).
https://pon.wiki/guides/masquerade-as-the-bce-inc-giga-hub-2...
Sure, it bypasses the supplied hardware but does not solve PPPoE limitations on UniFi.
I use the same WAS-110 on Bell.
As I noted in my other comment, AT&T Fiber doesn't actually using PPPoE, but anyway, glad to see you linked pon.wiki here. I am running XGSPON ONU stick (ONU on SFP) with the community firmware for my AT&T Fiber connection, getting native 5gbit throughput without the AT&T device in the path. pon.wiki is an amazing resource.