No WiFi after upgrade to 25.12.2 - hostapd: handle_probe_req: send failed

Installing and Using OpenWrt
1

NETGEAR R6220
Platform: ramips/mt7621

After upgrading from 24.10.5 to 25.12.2 WiFi is no available.
logread flooding with:


Sun Apr 19 13:38:57 2026 daemon.notice hostapd: handle_probe_req: send failed
Sun Apr 19 13:38:57 2026 daemon.notice hostapd: handle_probe_req: send failed
Sun Apr 19 13:38:57 2026 daemon.notice hostapd: handle_probe_req: send failed

What I did so far:
/etc/init.d/network restart

Restarting Radio0 in GUI
Disabling and enabling SSID
poweroff

None helps. Is this known 25.12 issue or can anyone please suggest where to look to troubleshoot this problem?

UPDATE
The problem only concerns Radio0 (2.4GHz)
Radio1 (5GHz) - works well and gives no errors

3

Are you running a STA+AP on the same radio?

4

Hi @lleachii
Thanks for reply.

AP (Access Point) - only.
Please have a look at the update I added to the opening post

5

Please show your /etc/config/wireless

6

Here it is.

Note1: wifinet2 is disabled. This is my backup link (mobile phone) in case my ISP is down.
Note2: this config has been running OK in previous OpenWRT versions.

root@OpenWrt:~# cat /etc/config/wireless

config wifi-device 'radio0'
	option type 'mac80211'
	option path '1e140000.pcie/pci0000:00/0000:00:02.0/0000:02:00.0'
	option channel '1'
	option band '2g'
	option htmode 'HT20'
	option cell_density '0'

config wifi-iface 'default_radio0'
	option device 'radio0'
	option network 'lan'
	option mode 'ap'
	option ssid 'wifi-1'
	option encryption 'sae-mixed'
	option key '###'
	option ocv '0'
	option disabled '1'

config wifi-device 'radio1'
	option type 'mac80211'
	option path '1e140000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0'
	option channel '36'
	option band '5g'
	option htmode 'VHT80'
	option cell_density '0'

config wifi-iface 'default_radio1'
	option device 'radio1'
	option network 'lan'
	option mode 'ap'
	option ssid 'wifi-2'
	option encryption 'sae-mixed'
	option key '###'
	option ocv '0'

config wifi-iface 'wifinet2'
	option device 'radio0'
	option mode 'sta'
	option network 'wwan'
	option ssid 'backup'
	option encryption 'psk2'
	option key '###'