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Re: kern/57992: urtwn (and athn) driver lost network when WIFI router changes channel
The following reply was made to PR kern/57992; it has been noted by GNATS.
From: mlelstv%serpens.de@localhost (Michael van Elst)
To: gnats-bugs%netbsd.org@localhost
Cc:
Subject: Re: kern/57992: urtwn (and athn) driver lost network when WIFI router changes channel
Date: Sun, 3 Mar 2024 13:29:58 -0000 (UTC)
ea1abz%gmail.com@localhost writes:
>If I force a channel change in the router, the network is lost and I cannot recover it. "service wpa_supplicant restart" does not recover network. "ifconfig urtwn0 down" and up does not fix it.
While I can confirm that a channel change isn't recognized with urtwn(4),
a restart of wpa_supplicant (or just a "scan" request from wpa_cli)
causes a new scan and association with the network.
An attempt to enable automatic scanning using the roaming options
(e.g. bgscan) in wpa_supplicant.conf didn't help.
N.B. The same experiment with iwm(4) causes a disconnect as soon as the
access point switches channels and an immediate scan, but afterwards
the scan results are always truncated and the network is never found.
Only a reboot recovers iwm(4) from this state.
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