This is very useful when running into bad cabling or having problems with underlaying equipment. This should cover routing protocols as well, where sudden packetloss somtimes tiggers constant adjacency change between routers. It has been present in other vendors for many years now.

https://www.cisco.com/c/en/us/support/d ... -thro.html
https://www.cisco.com/c/en/us/td/docs/i ... -damp.html
https://www.juniper.net/documentation/u ... faces.html

That's what BFD is for, if a link is unstable, the routing daemon on that interface will be down and failover. Route dampening is a legacy method predating BFD.

bfd dampening seems to be a thing, maybe that would be good.

I know about BFD and we use that as well. But thats only for detecting issues faster than the IGP itself. But there is no "penalty" concept so it triggers constant IGP recalculation. And it only works for L3.