ifconfig wlan0 scan, while associated

From: Andriy Gapon <avg_at_FreeBSD.org>
Date: Wed, 27 Aug 2025 09:40:50 UTC 
It seems that on the latest CURRENT, ifconfig wlan0 scan, executed while 
associated, just hangs indefinitely.
I recall that it used to work in the past (possibly losing association while 
scanning).

ifconfig's stack looks like it's waiting to receive something (over netlink?):
   PID    TID COMM                TDNAME              KSTACK
43416 100469 ifconfig            -                   mi_switch+0x188 
sleepq_switch+0xec sleepq_catch_signals+0x2bc sleepq_wait_sig+0xc _sleep+0x260 
soreceive_generic_locked+0x1cc soreceive_generic+0xa8 soreceive+0x48 
dofileread+0x74 kern_readv+0x4c sys_read+0x88 do_el0_sync+0x618 handle_el0_sync+0x4c

Looks like it regressed in April/May time frame.
Just in case, the hardware is rtwn on USB.

-- 
Andriy Gapon