Empty network interface list for SNMP router monitoring

4 posts · Closed

Stephan Guest
2 Apr 2025

Hi,

I just tried NetWorx on my MBP M2Pro/macOS 15.4. When trying to set up router monitoring, the drop-down for the selected network interface is empty. No matter which interface I am using, WLAN or my external USB-C adaptor, the drop-down stays empty.

Is this maybe an issue with macOS 15.4?

Ann SoftPerfect
2 Apr 2025

It is likely that your router either doesn't support SNMP or is not configured correctly. Could you please share the router model? It would help in troubleshooting the issue.

Stephan Guest
2 Apr 2025

Well… you nailed it. I am using OPNsense on my router, and despite configuring SNMP, the box needed a restart to actually activate it. Seems like an odd OpenBSD thing, as far as I could figure out. Plus - and that was where I really messed up: I didn't read WAN interface, which would have made it clear that it didn't mean the local Mac's interface.

After I rebooted the OPNsense box, all interfaces appeared in the drop-down list. Thanks for nudging me into the right direction.

Best,
Stephan

Ann SoftPerfect
2 Apr 2025

You are very welcome! We are glad to hear you sorted it out. OpenBSD does have its quirks, and sometimes a simple reboot works wonders. :-)

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