I actually have a side project doing this. I mapped an actor Id in ractor to a PID in erlang and used a rust create to implement the network protocol for erlang. I ran out of time on this side project kind of deal but it's like 90% there and can do a full cluster join and send and receive messages between remote actors on nodes.

The crate that helped this is erl_dist. I'd love to open source the code at some point, but it's not quite there yet