[feelin_googley]

"... only works on Linux."

"Multicast is not supported."

I seem to recall other L2 overlay projects, UDP-based, that are both portable to other OS (subject to TAP requirement) and have no problem with multicast.

Curious: What causes these limitations with NATS?

[lobster_johnson]

NATS is just a message broker, and runs wherever Go runs. The limitations are in this project. It's a 105-line proof of concept, clearly the author didn't bother making it portable.