State of resilient nexthop ECMP

Hey all, Wondering what the state of support for resilient ECMP with BIRD is?  I'm currently using BIRD to send traffic to a number of backend servers using ECMP, but of course if one server leaves the group, the entire hash is recalculated which results in clients being potentially directed to a different server resulting in tcp resets. I've been reading up on resilient nexthop which seems to solve this issue, and is supported natively in FRR, but I can't find any documentation about it's level of support in BIRD.  Wondering if anyone else has had experience with this technology and BIRD.