.local isn’t the best comparison to .onion .oarsinsync is probably a better comparison. It’s not explicitly scoped anywhere, and it works nicely in my oarsinsy

.local isn’t the best comparison to .onion .oarsinsync is probably a better comparison. It’s not explicitly scoped anywhere, and it works nicely in my oarsinsync bubble, much like .onion works nicely in the ToR bubble. In both cases, you need to connect using some kind of tunnelling protocol to connect into another network.