Hi!
First of all thanks for all the community work on making OpenWRT this possible!
I've installed OpenWrt 21.02.1 on my Archer C50 v4 (BR) and been having some wifi outage from time to time. Basically, after some up time (~12h) the 2.4GHz (wlan0) just drops and 5GHz (wlan1) signal also gets worse. All devices on the 2.4GHz get disconnected and the network gets inoperant, altought 5GHz still works. After rebooting the router everything got back to normal. I've installed some system monitoring tools for debuging the issue, here are some graphs where the issue occours at about 21:16
Also here is the syslog near 21h:
sys log:
Sun Jan 16 20:01:07 2022 daemon.warn odhcpd[1360]: A default route is present but there is no public prefix on lan thus we don't announce a default route!
Sun Jan 16 20:07:41 2022 daemon.warn odhcpd[1360]: A default route is present but there is no public prefix on lan thus we don't announce a default route!
Sun Jan 16 20:11:44 2022 daemon.warn odhcpd[1360]: A default route is present but there is no public prefix on lan thus we don't announce a default route!
Sun Jan 16 20:18:48 2022 daemon.warn odhcpd[1360]: A default route is present but there is no public prefix on lan thus we don't announce a default route!
Sun Jan 16 20:25:21 2022 daemon.info dnsmasq-dhcp[2503]: DHCPREQUEST(br-lan) 192.168.1.234 18:0d:2c:b3:c9:e7
Sun Jan 16 20:25:21 2022 daemon.info dnsmasq-dhcp[2503]: DHCPACK(br-lan) 192.168.1.234 18:0d:2c:b3:c9:e7 IWE3000N
Sun Jan 16 20:26:36 2022 daemon.warn odhcpd[1360]: A default route is present but there is no public prefix on lan thus we don't announce a default route!
Sun Jan 16 20:30:49 2022 daemon.notice netifd: wan (1625): udhcpc: sending renew to 192.168.0.1
Sun Jan 16 20:30:49 2022 daemon.notice netifd: wan (1625): udhcpc: lease of 192.168.0.4 obtained, lease time 3600
Sun Jan 16 20:33:21 2022 daemon.warn odhcpd[1360]: A default route is present but there is no public prefix on lan thus we don't announce a default route!
Sun Jan 16 20:42:19 2022 daemon.warn odhcpd[1360]: A default route is present but there is no public prefix on lan thus we don't announce a default route!
Sun Jan 16 20:48:17 2022 daemon.warn odhcpd[1360]: A default route is present but there is no public prefix on lan thus we don't announce a default route!
Sun Jan 16 20:57:21 2022 daemon.warn odhcpd[1360]: A default route is present but there is no public prefix on lan thus we don't announce a default route!
Sun Jan 16 21:00:50 2022 daemon.notice netifd: wan (1625): udhcpc: sending renew to 192.168.0.1
Sun Jan 16 21:00:50 2022 daemon.notice netifd: wan (1625): udhcpc: lease of 192.168.0.4 obtained, lease time 3600
Sun Jan 16 21:07:10 2022 daemon.warn odhcpd[1360]: A default route is present but there is no public prefix on lan thus we don't announce a default route!
Sun Jan 16 21:11:48 2022 daemon.warn odhcpd[1360]: A default route is present but there is no public prefix on lan thus we don't announce a default route!
Sun Jan 16 21:15:22 2022 daemon.warn odhcpd[1360]: A default route is present but there is no public prefix on lan thus we don't announce a default route!
Sun Jan 16 21:16:18 2022 daemon.info hostapd: wlan1: STA 4a:0b:4e:fa:65:29 IEEE 802.11: authenticated
Sun Jan 16 21:16:18 2022 daemon.info hostapd: wlan1: STA 4a:0b:4e:fa:65:29 IEEE 802.11: associated (aid 3)
Sun Jan 16 21:16:18 2022 daemon.notice hostapd: wlan1: AP-STA-CONNECTED 4a:0b:4e:fa:65:29
Sun Jan 16 21:16:18 2022 daemon.info hostapd: wlan1: STA 4a:0b:4e:fa:65:29 WPA: pairwise key handshake completed (RSN)
Sun Jan 16 21:16:19 2022 daemon.info dnsmasq-dhcp[2503]: DHCPREQUEST(br-lan) 192.168.1.229 4a:0b:4e:fa:65:29
Sun Jan 16 21:16:19 2022 daemon.info dnsmasq-dhcp[2503]: DHCPACK(br-lan) 192.168.1.229 4a:0b:4e:fa:65:29 Galaxy-Tab-A-8-0-2019
Sun Jan 16 21:16:19 2022 daemon.warn odhcpd[1360]: A default route is present but there is no public prefix on lan thus we don't announce a default route!
Sun Jan 16 21:17:23 2022 daemon.info hostapd: wlan1: STA 00:05:16:5d:21:d5 IEEE 802.11: authenticated
Sun Jan 16 21:17:23 2022 daemon.info hostapd: wlan1: STA 00:05:16:5d:21:d5 IEEE 802.11: associated (aid 4)
Sun Jan 16 21:17:23 2022 daemon.notice hostapd: wlan0: Prune association for 00:05:16:5d:21:d5
Sun Jan 16 21:17:23 2022 daemon.notice hostapd: wlan0: AP-STA-DISCONNECTED 00:05:16:5d:21:d5
Sun Jan 16 21:17:23 2022 daemon.notice hostapd: wlan1: AP-STA-CONNECTED 00:05:16:5d:21:d5
Sun Jan 16 21:17:23 2022 daemon.info hostapd: wlan1: STA 00:05:16:5d:21:d5 WPA: pairwise key handshake completed (RSN)
Sun Jan 16 21:17:23 2022 daemon.warn odhcpd[1360]: A default route is present but there is no public prefix on lan thus we don't announce a default route!
Sun Jan 16 21:17:24 2022 daemon.info dnsmasq-dhcp[2503]: DHCPDISCOVER(br-lan) 00:05:16:5d:21:d5
Sun Jan 16 21:17:24 2022 daemon.info dnsmasq-dhcp[2503]: DHCPOFFER(br-lan) 192.168.1.188 00:05:16:5d:21:d5
Sun Jan 16 21:17:24 2022 daemon.info dnsmasq-dhcp[2503]: DHCPREQUEST(br-lan) 192.168.1.188 00:05:16:5d:21:d5
Sun Jan 16 21:17:24 2022 daemon.info dnsmasq-dhcp[2503]: DHCPACK(br-lan) 192.168.1.188 00:05:16:5d:21:d5
Sun Jan 16 21:17:53 2022 daemon.info hostapd: wlan0: STA 00:05:16:5d:21:d5 IEEE 802.11: deauthenticated due to inactivity (timer DEAUTH/REMOVE)
Sun Jan 16 21:17:56 2022 daemon.err uhttpd[1490]: luci: accepted login on / for root from 192.168.1.188
Sun Jan 16 21:20:40 2022 daemon.warn odhcpd[1360]: A default route is present but there is no public prefix on lan thus we don't announce a default route!
Sun Jan 16 21:20:49 2022 daemon.notice hostapd: wlan0: AP-STA-DISCONNECTED 6a:db:78:76:05:38
Sun Jan 16 21:20:49 2022 daemon.info hostapd: wlan0: STA 6a:db:78:76:05:38 IEEE 802.11: disassociated due to inactivity
Sun Jan 16 21:20:51 2022 daemon.info hostapd: wlan0: STA 6a:db:78:76:05:38 IEEE 802.11: deauthenticated due to inactivity (timer DEAUTH/REMOVE)
Sun Jan 16 21:21:15 2022 daemon.notice hostapd: wlan0: AP-STA-DISCONNECTED 18:0d:2c:b3:c9:e7
Sun Jan 16 21:21:15 2022 daemon.info hostapd: wlan0: STA 18:0d:2c:b3:c9:e7 IEEE 802.11: disassociated due to inactivity
Sun Jan 16 21:21:16 2022 daemon.notice hostapd: wlan0: AP-STA-POLL-OK 18:0d:2c:b3:c9:e7
Sun Jan 16 21:21:16 2022 daemon.info hostapd: wlan0: STA 18:0d:2c:b3:c9:e7 IEEE 802.11: deauthenticated due to inactivity (timer DEAUTH/REMOVE)
Sun Jan 16 21:21:17 2022 daemon.notice hostapd: wlan0: AP-STA-DISCONNECTED d0:9c:7a:dd:b7:46
Sun Jan 16 21:21:17 2022 daemon.info hostapd: wlan0: STA d0:9c:7a:dd:b7:46 IEEE 802.11: disassociated due to inactivity
Sun Jan 16 21:21:18 2022 daemon.info hostapd: wlan0: STA d0:9c:7a:dd:b7:46 IEEE 802.11: deauthenticated due to inactivity (timer DEAUTH/REMOVE)
Sun Jan 16 21:21:31 2022 daemon.notice hostapd: wlan0: AP-STA-DISCONNECTED 8c:29:37:67:95:f3
Sun Jan 16 21:21:31 2022 daemon.info hostapd: wlan0: STA 8c:29:37:67:95:f3 IEEE 802.11: disassociated due to inactivity
Sun Jan 16 21:21:32 2022 daemon.info hostapd: wlan0: STA 8c:29:37:67:95:f3 IEEE 802.11: deauthenticated due to inactivity (timer DEAUTH/REMOVE)
Sun Jan 16 21:21:32 2022 daemon.notice hostapd: wlan0: AP-STA-DISCONNECTED d8:8c:79:20:e5:64
Sun Jan 16 21:21:32 2022 daemon.info hostapd: wlan0: STA d8:8c:79:20:e5:64 IEEE 802.11: disassociated due to inactivity
Sun Jan 16 21:21:33 2022 daemon.info hostapd: wlan0: STA d8:8c:79:20:e5:64 IEEE 802.11: deauthenticated due to inactivity (timer DEAUTH/REMOVE)
Sun Jan 16 21:21:35 2022 daemon.notice hostapd: wlan0: AP-STA-POLL-OK b8:27:eb:85:05:e7
Sun Jan 16 21:26:12 2022 daemon.warn odhcpd[1360]: A default route is present but there is no public prefix on lan thus we don't announce a default route!
Sun Jan 16 21:26:44 2022 daemon.notice hostapd: wlan0: AP-STA-DISCONNECTED b8:27:eb:85:05:e7
Sun Jan 16 21:26:44 2022 daemon.info hostapd: wlan0: STA b8:27:eb:85:05:e7 IEEE 802.11: disassociated due to inactivity
Sun Jan 16 21:26:45 2022 daemon.info hostapd: wlan0: STA b8:27:eb:85:05:e7 IEEE 802.11: deauthenticated due to inactivity (timer DEAUTH/REMOVE)
Sun Jan 16 21:30:19 2022 daemon.warn odhcpd[1360]: A default route is present but there is no public prefix on lan thus we don't announce a default route!
Sun Jan 16 21:30:50 2022 daemon.notice netifd: wan (1625): udhcpc: sending renew to 192.168.0.1
Sun Jan 16 21:30:50 2022 daemon.notice netifd: wan (1625): udhcpc: lease of 192.168.0.4 obtained, lease time 3600
Sun Jan 16 21:39:45 2022 daemon.warn odhcpd[1360]: A default route is present but there is no public prefix on lan thus we don't announce a default route!
cat /etc/confi/wireless:
config wifi-device 'radio0'
option type 'mac80211'
option hwmode '11g'
option path 'platform/10300000.wmac'
option cell_density '0'
option country 'BR'
option htmode 'HT40'
option channel '8'
config wifi-iface 'default_radio0'
option device 'radio0'
option network 'lan'
option mode 'ap'
option encryption 'psk2'
option key '<wifi-password>'
option ssid '<2.4g-ssid>'
option disassoc_low_ack '0'
config wifi-device 'radio1'
option type 'mac80211'
option hwmode '11a'
option path 'pci0000:00/0000:00:00.0/0000:01:00.0'
option htmode 'VHT80'
option cell_density '0'
option channel '40'
config wifi-iface 'default_radio1'
option device 'radio1'
option network 'lan'
option mode 'ap'
option ssid '<5.0g-ssid>'
option encryption 'psk2'
option key '<wifi-password>'
Thanks! 