kern/58263: ifconfig list scan loses WiFi network

[gson%gson.org@localhost (Andreas Gustafsson)]

>Number:         58263
>Category:       kern
>Synopsis:       ifconfig list scan loses WiFi network
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed May 15 19:45:00 +0000 2024
>Originator:     Andreas Gustafsson
>Release:        NetBSD-current, source date 2024.05.15.11.01.27
>Organization:
  
>Environment:
System: NetBSD
Architecture: i386
Machine: i386
>Description:

On a system that is successfully connected to WiFi (using WPA-PSK, in
case that makes a difference), if I run "ifconfig <wifi_interface>
list scan", the interface stops passing traffic, not just for the
duration of the scan, but indefinitely.  This happens with both
urtwn(4) and run(4).

This makes debugging other WiFi issues such as PR 55428 and PR 58262
harder.

Perhaps PR 57992 is related.

>How-To-Repeat:

>Fix: