RFC9234 is nice for the clearnet, but it is of limited use in dn42, where everyone is a transit provider. Unfortunately, the RFC does not provide for a provider-to-provider relationship.
@k3npo Can relate. At #RIPE85 I gave a lightning talk about #RFC9234 with the #RFC author in the room. Of course I made a mistake (although I could blame him for not reading my slides beforehand even I made them available to him).
Marek
Wolfgang Tremmel