Recover from /int wireless frequency-monitor?

I made the mistake of running /interface wireless frequency-monitor on the interface I was coming in through. :frowning: Of course my ssh connection immediately hung.

I reconnected via a hardline and found the interface was marked as “not disabled but not running” and registration-table showed zero users. There was nothing in the details shown by /int wireless print to indicate that anything was amiss with the interface. In hopes of resetting the interface, I ran /int wireless frequency-monitor again and got results, then quit, but this did not re-enable the interface. Finally, I just rebooted the router and all the interfaces came up fine.

What SHOULD I have done to reset this interface back to working order?

Next time try explicitly disabling and re-enabling the interface.

Yes, I tried that, too. After disabling it, no X appeared on the line; after re-enabling it, there was no change and the interface still was non-working.