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# Does anyone use the AutoInterface on macOS?

_Help · started by edsq on Sun, Jul 19, 2026 2:46 AM_

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## Original post

**edsq** · Sun, Jul 19, 2026 2:46 AM

Hi all,

Trying to use the default AutoInterface on macOS (Sequoia 15.7.4), I get a bunch of errors like:

"AutoInterface[Default Interface] No multicast echoes received on en0. The networking hardware or a firewall may be blocking multicast traffic."

If I disable the system firewall entirely, things work fine, but I'd rather not do that, of course. Has anyone gotten this to work on macOS? I've tried adding python, rnsd etc to the firewall whitelist, but no dice.

I apologize if this has been already asked! I searched around everywhere I could find of and didn't find anything, but I'm still quite new to Reticulum.

Thanks in advance!

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## Reply 1

**bergie** · Sun, Jul 19, 2026 7:39 PM

Works fine on our MacBook Air, but we had to specify the device to use in interface config. And haven't tried it with firewall enabled. This laptop never leaves the boat anyway.

```toml

[[Default Interface]]

type = AutoInterface

interface_enabled = True

devices = en0

```

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## Reply 2

**edsq** · Sun, Jul 19, 2026 8:06 PM

Thanks for the info! But unfortunately specifying a device didn't fix things - so long as the firewall is enabled, AutoInterface doesn't work. I really ought to be able to get it to work by adding the right executables to the firewall whitelist, but I think the system firewall actually might be bugged, or maybe it always blocks multicast no matter whether the application is whitelisted or not.

If it's not too much trouble, I'd be really interested to hear whether it continues to work for you if you turn on the firewall.

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