Den 17.11.2025 17:06, skreiv Molly Miller via Bird-users:
There's some prior art in other routing implementations which you might be interested in looking at. FRR already has similar functionality for automatic peering via IPv6 link-local addresses, as does Nokia's SR Linux platform (there may be others, but those are the ones I know).
Another point worth mentioning is that BGP updates containing only link-local next-hops aren't properly standardised at the moment, so there is no guarantee that two implementations will interoperate well.
There is an active effort to fix this problem though, see https://datatracker.ietf.org/doc/draft-ietf-idr-linklocal-capability/.
Tore
