Definitely will be interesting to read the list discussion about this. My first reaction was why would you even need this, so def curious. 

On Sat, Dec 21, 2024 at 8:25 PM Nick Hilliard <nick@foobar.org> wrote:
Douglas Fischer wrote on 22/12/2024 00:29:
Does any colleague have any clue about BFD session status propagation over BGP?

this internet draft discusses the problem space

https://datatracker.ietf.org/doc/draft-ietf-idr-rs-bfd/

Unfortunately there are no known implementations of the protocol.

Nick