Hello all, I'm running into this problem with a pair of 3925 ISRs. I have BFD configured to run over an IPSEC encrypted GRE tunnel between the two routers. One side is is sending and receiving BFD packets, but the other side is sending but not receiving. Has anyone else run into this? Any version of code that this is know to work properly on? I'll update this thread with my configs and code version later today.