Stefan B

enp0s1f0d1 and enp0s1f0d4 are interfaces of Router A's control plane module, where FRR is running. Both logical interfaces are associated with the same physical port. Router B is a VM,...

There is a hardware pipeline connecting enp0s1f0d1/4 with the physical port. It forwards outgoing packets transparently. For incoming packets, it rewrites the DMAC from "phy port MAC" to "enp0s1f0d4 MAC"....

I think I found the cause of the problem in our case. If I comment out following lines in lib/bfd.c, the coupling between BFD and BGP works: ``` /* Skip...

I think you have just given the best argument for such a knob, namely the current lack of support for BFD on LAG. But there could also be other scenarios...