Yeah I'm using bitcoin core. This didn't seem to solve much. I've specified my onion address via the externalip param and I'm still getting connected to via regular IPv4 addresses. Tried with discover on(1), and off(0).
Have you followed the instructions to add
bind=127.0.0.1:8334=onion to your config to prevent clearnet inbound connections?
Because
onlynet=onion only works in outbound connections like what you've described.
Don't forget to restart Core to apply the new bitcoin.conf settings.
That seems to have done the trick. Thank you. I get a LOT fewer inbound connections now (for obvious reasons), but the ones I get are via the onion network and not an IPv4 connection.