[Bug 264238] WiFi stops working after upgrade from 13.0 to 13.1, AR9285

From: <bugzilla-noreply_at_freebsd.org>
Date: Wed, 25 May 2022 15:50:39 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=264238

--- Comment #1 from Jaskie <jiangjun12321@yahoo.com> ---
/etc/wpa_supplicant.conf has lines for the WiFi as:

network={                                                                       
 ssid="WHU-STU"                                                                 
 key_mgmt=NONE                                                                  
}

which works in 13.0.

ifconfig wlan0 reports:

wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        ether 1c:4b:d6:ca:3e:ac
        groups: wlan
        ssid WHU-STU channel 5 (2432 MHz 11g ht/20) bssid 70:d9:31:0e:2c:00     
        regdomain 96 indoor ecm authmode WPA privacy MIXED deftxkey UNDEF
        txpower 20 bmiss 7 scanvalid 60 protmode CTS ampdulimit 64k shortgi
        -stbctx stbcrx -ldpc -uapsd wme burst roaming MANUAL bintval 300
        parent interface: ath0
        media: IEEE 802.11 Wireless Ethernet DS/1Mbps mode 11ng
        status: associated
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>

Though it says it's connected to my network (WHU-STU), but there is no internet
access, nor can I open athentification page which automatically prompts in 13.0
when I open firefox. My orgnization has a adimistrator page for us where we can
find out our connected devices, and I cannot find my laptop there either though
ifconfig says I am connected. But I suppose this is normal since I am not yet
logged in now.
I tried service netif/dhclient restart, none worked.

I boot into 13.0 boot environment and WiFi works again. ifconfig reports:

wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        ether 1c:4b:d6:ca:3e:ac
        inet 10.134.135.167/17 broadcast 10.134.255.255
        groups: wlan
        ssid WHU-STU channel 13 (2472 MHz 11g ht/20) bssid fc:b6:98:f6:12:80
        regdomain 96 indoor ecm authmode OPEN privacy OFF txpower 20 bmiss 7
        scanvalid 60 protmode CTS ampdulimit 64k shortgi -stbctx stbcrx -ldpc
        -uapsd wme burst roaming MANUAL bintval 300
        parent interface: ath0
        media: IEEE 802.11 Wireless Ethernet MCS mode 11ng
        status: associated
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>

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