Hi, We are running an OSPF/BFD setup with Bird, with several links that look like this: Bird/Debian -- switch -- fiber -- switch -- Bird/Debian We had a situation where a fiber link was flapping hard between two switches because of a hardware issue. In turn, the BFD sessions were flapping, which is expected. My question: is there any way to limit the amount of flapping in either OSPF or BFD? I was specifically looking for a "prefer older" option in OSPF but it only exists in BGP. Alternatively, BFD could disable a session for some time if it flaps too much. In our setup, routers often have several paths with the same OSPF cost to/from the BGP gateway. We don't use ECMP: only one path is used at a time, other paths are used as backup (in case of fiber cut or hardware issue). So, in our case, a "prefer older" option for OSPF would make a lot of sense and would naturally avoid using flapping links. Is it something that could be implemented? Thanks, Baptiste PS: we are using Bird 1.6.3 which is quite old