DNS problems only on wireless clients

I'm having DNS resolution problems that occur only on the wireless network and not via cable.

Wireless clients have internet access and DNS works fine but after a short while they lose internet connection but I can still access luci, wired clients are unaffected.

SSH in to the router and run -

logread | grep sta

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logread | grep sta
Tue Mar 29 22:11:21 2022 kern.notice kernel: [    8.419033] ubi0: background thread "ubi_bgt0d" started, PID 424
Tue Mar 29 22:11:21 2022 kern.notice kernel: [   20.988151] UBIFS (ubi0:1): background thread "ubifs_bgt0_1" started, PID 609
Tue Mar 29 22:11:21 2022 user.info kernel: [   21.338370] block: attempting to load /tmp/ubifs_cfg/upper/etc/config/fstab
Tue Mar 29 22:11:21 2022 kern.notice kernel: [   21.387437] UBIFS (ubi0:1): background thread "ubifs_bgt0_1" started, PID 612
Tue Mar 29 22:11:21 2022 user.info kernel: [   22.138726] block: attempting to load /tmp/ubifs_cfg/upper/etc/config/fstab
Tue Mar 29 22:11:21 2022 user.info kernel: [   24.873779] urngd: v1.0.2 started.
Tue Mar 29 22:11:23 2022 daemon.info dnsmasq[2184]: started, version 2.86 cachesize 4096
Tue Mar 29 22:11:32 2022 cron.err crond[3061]: crond (busybox 1.35.0) started, log level 5
Tue Mar 29 22:11:32 2022 daemon.notice procd: /etc/rc.d/S50autoreboot: Auto REBOOT has started.
Tue Mar 29 22:11:34 2022 daemon.err uwsgi[3252]: *** starting uWSGI Emperor ***
Tue Mar 29 22:11:34 2022 daemon.err uwsgi[3252]: [uwsgi-emperor] /etc/uwsgi/vassals/luci-cgi_io.ini -> "on demand" instance detected, waiting for connections on socket "/var/run//luci-cgi_io.socket" ...
Tue Mar 29 22:11:34 2022 daemon.err uwsgi[3252]: [uwsgi-emperor] /etc/uwsgi/vassals/luci-webui.ini -> "on demand" instance detected, waiting for connections on socket "/var/run//luci-webui.socket" ...
Tue Mar 29 22:11:36 2022 user.notice ucitrack: Setting up /etc/config/wireless reload trigger for non-procd /etc/init.d/sta_disable
Tue Mar 29 22:11:36 2022 kern.info kernel: [   45.756727] br-lan: port 1(eth0.1) entered blocking state
Tue Mar 29 22:11:36 2022 kern.info kernel: [   45.762262] br-lan: port 1(eth0.1) entered disabled state
Tue Mar 29 22:11:36 2022 kern.info kernel: [   45.784724] br-lan: port 1(eth0.1) entered blocking state
Tue Mar 29 22:11:36 2022 kern.info kernel: [   45.790221] br-lan: port 1(eth0.1) entered forwarding state
Tue Mar 29 22:11:37 2022 daemon.notice pppd[3620]: pppd 2.4.9 started by root, uid 0
Tue Mar 29 22:11:37 2022 user.notice ucitrack: Setting up non-init /etc/config/fstab reload handler: /sbin/block mount
Tue Mar 29 22:11:38 2022 user.notice ucitrack: Setting up /etc/config/system reload dependency on /etc/config/luci_statistics
Tue Mar 29 22:11:40 2022 daemon.notice hostapd: Configuration file: /var/run/hostapd-phy1.conf (phy wlan1) --> new PHY
Tue Mar 29 22:11:40 2022 daemon.notice hostapd: wlan1: interface state UNINITIALIZED->COUNTRY_UPDATE
Tue Mar 29 22:11:40 2022 daemon.info dnsmasq[4619]: started, version 2.86 cachesize 4096
Tue Mar 29 22:11:40 2022 daemon.notice hostapd: wlan1: interface state COUNTRY_UPDATE->HT_SCAN
Tue Mar 29 22:11:40 2022 daemon.notice hostapd: Configuration file: /var/run/hostapd-phy0.conf (phy wlan0) --> new PHY
Tue Mar 29 22:11:42 2022 kern.info kernel: [   52.059562] br-lan: port 2(wlan0) entered blocking state
Tue Mar 29 22:11:42 2022 kern.info kernel: [   52.065341] br-lan: port 2(wlan0) entered disabled state
Tue Mar 29 22:11:42 2022 daemon.notice hostapd: wlan0: interface state UNINITIALIZED->COUNTRY_UPDATE
Tue Mar 29 22:11:43 2022 daemon.notice procd: /etc/rc.d/S81dawn: Dawn instance started!
Tue Mar 29 22:11:44 2022 daemon.err usbmuxd[5383]: [22:11:44.796][3] usbmuxd v1.1.1 starting up
Tue Mar 29 22:11:44 2022 daemon.err usbmuxd[5383]: [22:11:44.801][3] Enabled exit on SIGUSR1 if no devices are attached. Start a new instance with "--exit" to trigger.
Tue Mar 29 22:11:44 2022 kern.info kernel: [   54.102662] br-lan: port 2(wlan0) entered blocking state
Tue Mar 29 22:11:44 2022 kern.info kernel: [   54.108033] br-lan: port 2(wlan0) entered forwarding state
Tue Mar 29 22:11:45 2022 daemon.notice hostapd: wlan0: interface state COUNTRY_UPDATE->ENABLED
Tue Mar 29 22:11:45 2022 daemon.notice hostapd: wlan0: AP-ENABLED
Tue Mar 29 22:11:45 2022 daemon.notice hostapd: wlan1: interface state HT_SCAN->DFS
Tue Mar 29 22:11:45 2022 daemon.notice hostapd: wlan1: DFS-CAC-START freq=5260 chan=52 sec_chan=1, width=1, seg0=58, seg1=0, cac_time=60s
Tue Mar 29 22:45:16 2022 daemon.info dnsmasq-dhcp[4619]: DHCPNAK(br-lan) 192.168.30.102 18:31:bf:cc:5e:d7 static lease available
Tue Mar 29 22:45:16 2022 daemon.info procd: Instance miniupnpd::instance1 pid 5314 not stopped on SIGTERM, sending SIGKILL instead
Tue Mar 29 22:45:18 2022 daemon.err wsdd2: samba36/4 or ksmbd is not running, can't start wsdd2!
Tue Mar 29 22:45:26 2022 daemon.info procd: Instance miniupnpd::instance1 pid 6260 not stopped on SIGTERM, sending SIGKILL instead
Tue Mar 29 22:45:39 2022 daemon.info hostapd: wlan0: STA d2:ea:0c:71:b6:02 IEEE 802.11: authenticated
Tue Mar 29 22:45:39 2022 daemon.info hostapd: wlan0: STA d2:ea:0c:71:b6:02 IEEE 802.11: associated (aid 1)
Tue Mar 29 22:45:40 2022 daemon.notice hostapd: wlan0: AP-STA-CONNECTED d2:ea:0c:71:b6:02
Tue Mar 29 22:45:40 2022 daemon.info hostapd: wlan0: STA d2:ea:0c:71:b6:02 RADIUS: starting accounting session B0B102A0F7AC8429
Tue Mar 29 22:45:40 2022 daemon.info hostapd: wlan0: STA d2:ea:0c:71:b6:02 WPA: pairwise key handshake completed (RSN)
Tue Mar 29 22:45:40 2022 daemon.notice hostapd: wlan0: EAPOL-4WAY-HS-COMPLETED d2:ea:0c:71:b6:02
Tue Mar 29 22:45:44 2022 daemon.info dnsmasq-dhcp[4619]: DHCPNAK(br-lan) 192.168.30.101 38:6b:1c:2b:c1:7e static lease available
Tue Mar 29 22:46:12 2022 daemon.notice hostapd: wlan1: DFS-CAC-COMPLETED success=1 freq=5260 ht_enabled=0 chan_offset=0 chan_width=3 cf1=5290 cf2=0
Tue Mar 29 22:46:13 2022 daemon.notice hostapd: wlan1: interface state DFS->ENABLED
Tue Mar 29 22:46:13 2022 daemon.notice hostapd: wlan1: AP-ENABLED

SSH in and run (as one command) -

ubus call system board; \
uci export network; uci export wireless;

Post the results in preformatted text.

Redact passwords.