Switched to Ubiquiti, I'm quite happy except for their lack of a sane MCP.
It's not something I've tried but I imagine you could actually expose FRR directly and configure through that
I have like a ~15y history of working with their stuff.
You might be interested in https://www.youtube.com/watch?v=KZpJvpm1Ris (title: Does UniFi FINALLY support IPv6 Properly? State of IPv6 with Unifi Network v9). The video is about a year old, but from the looks it's not terribly outdated.