I don’t think it’s epmd, for a couple reasons. First, I can see the connection being initiated in the trace on both nodes, so it is at least attempting an actual connection to the node. Second, I have reproduced this experiment with epmd disabled (replaced with a different implementation) and gotten the same results. Possibly it’s not finding the node in epmd and then making some kind of broadcast attempt to connect?
I agree it seems that somewhere there is a check on the literal value of the node name. It seems to happen after an initial connection attempt is made - ie some part of the stack does split the host part of the name off from the whole thing, but the handshake appears to check for it. I was hoping someone could explain just for the sake of education as I couldn’t find anything in the docs that would explain.
Fwiw I did get my set up to work using a forked version of caravan GitHub - uberbrodt/caravan: epmd implementation and other OTP apps to make running Erlang/Elixir apps with Nomad and Consul easier. · GitHub
