Batman (in production with post 19.07 snapshot) not working under 21.02

OK. Many thanks; brctl now shows appropriate stuff. I have reported the working /etc/config/network, /etc/config/wireless, and brctl output in this discussion.

But the problems are not quite solved yet, because Batman still doesn't work. The only relevant complaint I have found in the log suggests that perhaps wpa_supplicant is incompatible with what used to work in /etc/config/wireless. Here's what I'm seeing in the log:

Thu Jun 24 20:58:15 2021 daemon.err wpa_supplicant[1480]: Line 8: too large mode (value=5 max_value=4)
Thu Jun 24 20:58:15 2021 daemon.err wpa_supplicant[1480]: Line 8: failed to parse mode '5'.
Thu Jun 24 20:58:15 2021 daemon.err wpa_supplicant[1480]: Line 16: failed to parse network block.
Thu Jun 24 20:58:15 2021 daemon.err wpa_supplicant[1480]: Failed to read or parse configuration '/var/run/wpa_supplicant-wlan0.conf'.
Thu Jun 24 20:58:15 2021 daemon.notice netifd: radio0 (5073): Interface 0 setup failed: WPA_SUPPLICANT_FAILED
Thu Jun 24 20:58:15 2021 daemon.notice netifd: radio0 (5073): WARNING (wireless_add_process): executable path /usr/sbin/wpad does not match process  path (/proc/exe)

So:

root@rpc149:~# cat /var/run/wpa_supplicant-wlan0.conf
network={
        ssid="meshD"
        key_mgmt=SAE
        mode=5
        fixed_freq=1
        frequency=5180
        ht40=1
        vht=1
        max_oper_chwidth=1
        sae_password="XXXX"
        beacon_int=100
}

On another node where my lucky snapshot is running in production, here's what the log says about wpa:

root@rpc150:~# logread | fgrep -i wpa
Thu Jun 24 09:04:05 2021 daemon.notice wpa_supplicant[1367]: Successfully initialized wpa_supplicant
Fri Jun 25 04:35:03 2021 daemon.notice wpa_supplicant[1367]: wlan0: leaving mesh
Fri Jun 25 04:35:04 2021 daemon.err wpa_supplicant[1367]: wlan0: mesh leave error=-134
Fri Jun 25 04:35:06 2021 daemon.notice wpa_supplicant[1367]: wlan0: interface state UNINITIALIZED->ENABLED
Fri Jun 25 04:35:06 2021 daemon.notice wpa_supplicant[1367]: wlan0: AP-ENABLED
Fri Jun 25 04:35:06 2021 daemon.notice wpa_supplicant[1367]: wlan0: joining mesh meshD
Fri Jun 25 04:35:06 2021 daemon.notice wpa_supplicant[1367]: wlan0: CTRL-EVENT-CONNECTED - Connection to 00:00:00:00:00:00 completed [id=0 id_str=]
Fri Jun 25 04:35:06 2021 daemon.notice wpa_supplicant[1367]: wlan0: MESH-GROUP-STARTED ssid="meshD" id=0

On that same (working) node:

root@rpc150:~# cat /var/run/wpa_supplicant-wlan0.conf
country=US
network={
        ssid="meshD"
        key_mgmt=SAE
        mode=5
        mesh_fwding=0
        fixed_freq=1
        frequency=5745
        ht40=1
        vht=1
        max_oper_chwidth=1
        sae_password="XXXX"
        beacon_int=100
}

At this moment, I'm guessing that wpa_supplicant isn't supporting mesh mode, so I'm wondering whether I need to make a change to wpad. I'm looking into it now.