Yes bfd-yang. Sometimes I would like to be wrong.
When I look at this I-D, I see that it references
/rt:routing/mpls:mpls/mpls:interface/mpls:config/mpls:enabled
In 2018, the MPLS WG removed that /config from the mpls-base-yang so
this would seem to be no longer valid. What needs changing to rectify
this I have not explored.
The I-D has
augment "/te:te/te:lsps-state/te:lsp"
which I no longer see in draft-ietf-teas-yang-te - the -state has gone.
Again, I have not explored the ramifications of this.
MPLS WG has a new base-yang out this week which differentiates between
an IP route with a MPLS next hop and a MPLS route with no IP, the latter
forming a new, mpls Address Family. I would think that the latter is
not catered for by BFD but it would be nice to be wrong
Tom Petch