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

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=264238

--- Comment #25 from Jaskie <jiangjun12321@yahoo.com> ---
I did this steps in both 13.0 and 13.1:

% doas service netif stop wlan0 
% doas mv /var/db/dhclient.leases.wlan0{,.bak}
% doas service netif start wlan0
% doas tcpdump -i wlan0 -w OUT.bpf -s 0
% doas ifconfig wlan0
% doas dhclient wlan0

In 13.0, network connects almost instantly. But in 13.1 it still won't connect.
Output similiar to:

DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 4
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 10
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 13
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 9
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 9
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 15
No DHCPOFFERS received.
No working leases in persistent database - sleeping.


as before.

I checked rc.conf, wpa_supplicant.conf and they're identical in both BEs. I
checked dmesg in both BEs and ath_hal was loaded, didn't know why it was not in
the file I uploaded earlier.

To use wireshark or to dig into the tcpducp outputs are beyond my capability so
I'll leave it to you as always. Thanks for all your help!

Anyways, this are the tcpdump bpf files: https://tempsend.com/skhrg

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