DNS reliability issues

Randomly, or often prompted by me logging into the panel, my router will stop working. Attached is a log. What is especially strange is that when this happens, it can often be worked around by using a VPN or manually setting DNS on each device.

I have since turned off the multi wan ping test as some people on other threads said it can cause issues, but I am still having problems.

I have tried every type of DNS, with the override options on and off, with no difference. This particular log was when DNS over TLS via Cloudflare was chosen, but there is the same effect regardless.

Any clarity is appreciated

Blockquote
un Sep 10 15:45:25 2023 user.warn : skip line without ‘=’ Default
Sun Sep 10 15:45:25 2023 user.warn : skip line without ‘=’
Sun Sep 10 15:45:25 2023 user.warn : skip line without ‘=’ Default
Sun Sep 10 15:45:25 2023 user.warn : skip line without ‘=’
Sun Sep 10 15:45:25 2023 user.warn : skip line without ‘=’ Default
Sun Sep 10 15:45:25 2023 user.warn : skip line without ‘=’
Sun Sep 10 15:45:25 2023 user.warn : skip line without ‘=’ Default
Sun Sep 10 15:45:25 2023 user.warn : skip line without ‘=’
Sun Sep 10 15:45:25 2023 user.warn : skip line without ‘=’ Default
Sun Sep 10 15:45:25 2023 user.warn : skip line without ‘=’
Sun Sep 10 15:45:25 2023 user.warn : skip line without ‘=’ Default
Sun Sep 10 15:45:25 2023 user.warn : skip line without ‘=’
Sun Sep 10 15:45:25 2023 user.warn : skip line without ‘=’ Default
Sun Sep 10 15:45:25 2023 user.warn : skip line without ‘=’
Sun Sep 10 15:45:25 2023 user.warn : skip line without ‘=’ Default
Sun Sep 10 15:45:25 2023 user.warn : skip line without ‘=’
Sun Sep 10 15:45:25 2023 user.warn : skip line without ‘=’ Default
Sun Sep 10 15:45:25 2023 user.warn : skip line without ‘=’
Sun Sep 10 15:45:25 2023 user.warn : skip line without ‘=’ Default
Sun Sep 10 15:45:25 2023 user.warn : skip line without ‘=’
Sun Sep 10 15:45:43 2023 daemon.info dnsmasq-dhcp[4517]: DHCPDISCOVER(br-lan) 0c:80:63:0a:c1:b4
Sun Sep 10 15:45:43 2023 daemon.info dnsmasq-dhcp[4517]: DHCPOFFER(br-lan) 192.166.0.114 0c:80:63:0a:c1:b4
Sun Sep 10 15:45:43 2023 daemon.info dnsmasq-dhcp[4517]: DHCPREQUEST(br-lan) 192.166.0.114 0c:80:63:0a:c1:b4
Sun Sep 10 15:45:43 2023 daemon.info dnsmasq-dhcp[4517]: DHCPACK(br-lan) 192.166.0.114 0c:80:63:0a:c1:b4 deco-P7
Sun Sep 10 15:46:01 2023 user.notice mwan3[20333]: Execute ifdown event on interface wan (pppoe-wan)
Sun Sep 10 15:46:02 2023 user.notice firewall: Reloading firewall due to ifdown of wan (pppoe-wan)
Sun Sep 10 15:46:02 2023 user.info mwan3track[16387]: Detect ifdown event on interface wan (pppoe-wan)
Sun Sep 10 15:46:07 2023 user.notice mwan3track[16387]: Interface wan (pppoe-wan) is offline
Sun Sep 10 15:46:23 2023 daemon.info dnsmasq-dhcp[4517]: DHCPREQUEST(br-lan) 192.166.0.159 4a:77:a2:82:b4:a9
Sun Sep 10 15:46:23 2023 daemon.info dnsmasq-dhcp[4517]: DHCPACK(br-lan) 192.166.0.159 4a:77:a2:82:b4:a9
Sun Sep 10 15:46:39 2023 daemon.info dnsmasq-dhcp[4517]: DHCPREQUEST(br-lan) 192.166.0.239 14:7d:da:33:7a:53
Sun Sep 10 15:46:39 2023 daemon.info dnsmasq-dhcp[4517]: DHCPACK(br-lan) 192.166.0.239 14:7d:da:33:7a:53 MBP
Sun Sep 10 15:48:53 2023 authpriv.info dropbear[26453]: Child connection from 192.166.0.239:50176
Sun Sep 10 15:48:55 2023 authpriv.info dropbear[26454]: Child connection from 192.166.0.239:50195
Sun Sep 10 15:48:57 2023 authpriv.notice dropbear[26454]: Password auth succeeded for ‘root’ from 192.166.0.239:50195
Sun Sep 10 15:50:36 2023 daemon.err stubby[30163]: [11:50:36.909042] STUBBY: Stubby version: Stubby 0.4.0
Sun Sep 10 15:50:36 2023 daemon.err stubby[30163]: [11:50:36.915846] STUBBY: Read config from file /var/etc/stubby/stubby.yml
Sun Sep 10 15:50:36 2023 daemon.err stubby[30163]: [11:50:36.917290] STUBBY: DNSSEC Validation is OFF
Sun Sep 10 15:50:36 2023 daemon.err stubby[30163]: [11:50:36.917603] STUBBY: Transport list is:
Sun Sep 10 15:50:36 2023 daemon.err stubby[30163]: [11:50:36.917811] STUBBY: - TLS
Sun Sep 10 15:50:36 2023 daemon.err stubby[30163]: [11:50:36.918012] STUBBY: Privacy Usage Profile is Strict (Authentication required)
Sun Sep 10 15:50:36 2023 daemon.err stubby[30163]: [11:50:36.918226] STUBBY: (NOTE a Strict Profile only applies when TLS is the ONLY transport!!)
Sun Sep 10 15:50:36 2023 daemon.err stubby[30163]: [11:50:36.918421] STUBBY: Starting DAEMON…
Sun Sep 10 15:50:37 2023 daemon.info dnsmasq[4517]: exiting on receipt of SIGTERM
Sun Sep 10 15:50:37 2023 daemon.info dnsmasq[30346]: Connected to system UBus
Sun Sep 10 15:50:37 2023 daemon.info dnsmasq[30346]: started, version 2.85 cachesize 150
Sun Sep 10 15:50:37 2023 daemon.info dnsmasq[30346]: DNS service limited to local subnets
Sun Sep 10 15:50:37 2023 daemon.info dnsmasq[30346]: compile time options: IPv6 GNU-getopt no-DBus UBus no-i18n no-IDN DHCP DHCPv6 no-Lua TFTP conntrack ipset auth cryptohash DNSSEC no-ID loop-detect inotify dumpfile
Sun Sep 10 15:50:37 2023 daemon.info dnsmasq[30346]: UBus support enabled: connected to system bus
Sun Sep 10 15:50:37 2023 daemon.info dnsmasq-dhcp[30346]: DHCP, IP range 192.166.0.100 – 192.166.0.249, lease time 12h
Sun Sep 10 15:50:37 2023 daemon.info dnsmasq[30346]: using only locally-known addresses for domain test
Sun Sep 10 15:50:37 2023 daemon.info dnsmasq[30346]: using only locally-known addresses for domain onion
Sun Sep 10 15:50:37 2023 daemon.info dnsmasq[30346]: using only locally-known addresses for domain localhost
Sun Sep 10 15:50:37 2023 daemon.info dnsmasq[30346]: using only locally-known addresses for domain local
Sun Sep 10 15:50:37 2023 daemon.info dnsmasq[30346]: using only locally-known addresses for domain invalid
Sun Sep 10 15:50:37 2023 daemon.info dnsmasq[30346]: using only locally-known addresses for domain bind
Sun Sep 10 15:50:37 2023 daemon.info dnsmasq[30346]: using nameserver 127.0.0.1#5453
Sun Sep 10 15:50:37 2023 daemon.info dnsmasq[30346]: using only locally-known addresses for domain lan
Sun Sep 10 15:50:37 2023 daemon.info dnsmasq[30346]: read /etc/hosts - 4 addresses
Sun Sep 10 15:50:37 2023 daemon.info dnsmasq[30346]: read /tmp/hosts/dhcp.cfg01411c - 2 addresses
Sun Sep 10 15:50:37 2023 daemon.info dnsmasq-dhcp[30346]: read /etc/ethers - 0 addresses
Sun Sep 10 15:50:43 2023 daemon.info dnsmasq[30346]: exiting on receipt of SIGTERM
Sun Sep 10 15:50:44 2023 daemon.info dnsmasq[31147]: Connected to system UBus
Sun Sep 10 15:50:44 2023 daemon.info dnsmasq[31147]: started, version 2.85 cachesize 150
Sun Sep 10 15:50:44 2023 daemon.info dnsmasq[31147]: DNS service limited to local subnets
Sun Sep 10 15:50:44 2023 daemon.info dnsmasq[31147]: compile time options: IPv6 GNU-getopt no-DBus UBus no-i18n no-IDN DHCP DHCPv6 no-Lua TFTP conntrack ipset auth cryptohash DNSSEC no-ID loop-detect inotify dumpfile
Sun Sep 10 15:50:44 2023 daemon.info dnsmasq[31147]: UBus support enabled: connected to system bus
Sun Sep 10 15:50:44 2023 daemon.info dnsmasq-dhcp[31147]: DHCP, IP range 192.166.0.100 – 192.166.0.249, lease time 12h
Sun Sep 10 15:50:44 2023 daemon.info dnsmasq[31147]: using only locally-known addresses for domain test
Sun Sep 10 15:50:44 2023 daemon.info dnsmasq[31147]: using only locally-known addresses for domain onion
Sun Sep 10 15:50:44 2023 daemon.info dnsmasq[31147]: using only locally-known addresses for domain localhost
Sun Sep 10 15:50:44 2023 daemon.info dnsmasq[31147]: using only locally-known addresses for domain local
Sun Sep 10 15:50:44 2023 daemon.info dnsmasq[31147]: using only locally-known addresses for domain invalid
Sun Sep 10 15:50:44 2023 daemon.info dnsmasq[31147]: using only locally-known addresses for domain bind
Sun Sep 10 15:50:44 2023 daemon.info dnsmasq[31147]: using nameserver 127.0.0.1#5453
Sun Sep 10 15:50:44 2023 daemon.info dnsmasq[31147]: using only locally-known addresses for domain lan
Sun Sep 10 15:50:44 2023 daemon.info dnsmasq[31147]: read /etc/hosts - 4 addresses
Sun Sep 10 15:50:44 2023 daemon.info dnsmasq[31147]: read /tmp/hosts/dhcp.cfg01411c - 2 addresses
Sun Sep 10 15:50:44 2023 daemon.info dnsmasq-dhcp[31147]: read /etc/ethers - 0 addresses
Sun Sep 10 15:51:45 2023 daemon.info dnsmasq-dhcp[31147]: DHCPRELEASE(br-lan) 192.166.0.125 b0:cf:cb:ee:1c:9f
Sun Sep 10 15:51:49 2023 daemon.info dnsmasq-dhcp[31147]: DHCPDISCOVER(br-lan) b0:cf:cb:ee:1c:9f
Sun Sep 10 15:51:49 2023 daemon.info dnsmasq-dhcp[31147]: DHCPOFFER(br-lan) 192.166.0.125 b0:cf:cb:ee:1c:9f
Sun Sep 10 15:51:49 2023 daemon.info dnsmasq-dhcp[31147]: DHCPDISCOVER(br-lan) b0:cf:cb:ee:1c:9f
Sun Sep 10 15:51:49 2023 daemon.info dnsmasq-dhcp[31147]: DHCPOFFER(br-lan) 192.166.0.125 b0:cf:cb:ee:1c:9f
Sun Sep 10 15:51:49 2023 daemon.info dnsmasq-dhcp[31147]: DHCPREQUEST(br-lan) 192.166.0.125 b0:cf:cb:ee:1c:9f
Sun Sep 10 15:51:49 2023 daemon.info dnsmasq-dhcp[31147]: DHCPACK(br-lan) 192.166.0.125 b0:cf:cb:ee:1c:9f
Sun Sep 10 15:52:05 2023 daemon.info dnsmasq-dhcp[31147]: DHCPDISCOVER(br-lan) b0:cf:cb:ee:1c:9f
Sun Sep 10 15:52:05 2023 daemon.info dnsmasq-dhcp[31147]: DHCPOFFER(br-lan) 192.166.0.125 b0:cf:cb:ee:1c:9f
Sun Sep 10 15:52:05 2023 daemon.info dnsmasq-dhcp[31147]: DHCPREQUEST(br-lan) 192.166.0.125 b0:cf:cb:ee:1c:9f
Sun Sep 10 15:52:05 2023 daemon.info dnsmasq-dhcp[31147]: DHCPACK(br-lan) 192.166.0.125 b0:cf:cb:ee:1c:9f
Sun Sep 10 15:52:22 2023 daemon.info dnsmasq-dhcp[31147]: DHCPRELEASE(br-lan) 192.166.0.125 b0:cf:cb:ee:1c:9f
Sun Sep 10 15:52:26 2023 daemon.info dnsmasq-dhcp[31147]: DHCPDISCOVER(br-lan) b0:cf:cb:ee:1c:9f
Sun Sep 10 15:52:26 2023 daemon.info dnsmasq-dhcp[31147]: DHCPOFFER(br-lan) 192.166.0.125 b0:cf:cb:ee:1c:9f
Sun Sep 10 15:52:26 2023 daemon.info dnsmasq-dhcp[31147]: DHCPDISCOVER(br-lan) b0:cf:cb:ee:1c:9f
Sun Sep 10 15:52:26 2023 daemon.info dnsmasq-dhcp[31147]: DHCPOFFER(br-lan) 192.166.0.125 b0:cf:cb:ee:1c:9f
Sun Sep 10 15:52:26 2023 daemon.info dnsmasq-dhcp[31147]: DHCPREQUEST(br-lan) 192.166.0.125 b0:cf:cb:ee:1c:9f
Sun Sep 10 15:52:26 2023 daemon.info dnsmasq-dhcp[31147]: DHCPACK(br-lan) 192.166.0.125 b0:cf:cb:ee:1c:9f
Sun Sep 10 15:52:42 2023 daemon.info dnsmasq-dhcp[31147]: DHCPRELEASE(br-lan) 192.166.0.125 b0:cf:cb:ee:1c:9f
Sun Sep 10 15:52:42 2023 daemon.info dnsmasq-dhcp[31147]: DHCPDISCOVER(br-lan) b0:cf:cb:ee:1c:9f
Sun Sep 10 15:52:42 2023 daemon.info dnsmasq-dhcp[31147]: DHCPOFFER(br-lan) 192.166.0.125 b0:cf:cb:ee:1c:9f
Sun Sep 10 15:52:42 2023 daemon.info dnsmasq-dhcp[31147]: DHCPREQUEST(br-lan) 192.166.0.125 b0:cf:cb:ee:1c:9f
Sun Sep 10 15:52:42 2023 daemon.info dnsmasq-dhcp[31147]: DHCPACK(br-lan) 192.166.0.125 b0:cf:cb:ee:1c:9f
Sun Sep 10 15:52:58 2023 daemon.info dnsmasq-dhcp[31147]: DHCPDISCOVER(br-lan) b0:cf:cb:ee:1c:9f
Sun Sep 10 15:52:58 2023 daemon.info dnsmasq-dhcp[31147]: DHCPOFFER(br-lan) 192.166.0.125 b0:cf:cb:ee:1c:9f
Sun Sep 10 15:52:58 2023 daemon.info dnsmasq-dhcp[31147]: DHCPREQUEST(br-lan) 192.166.0.125 b0:cf:cb:ee:1c:9f
Sun Sep 10 15:52:58 2023 daemon.info dnsmasq-dhcp[31147]: DHCPACK(br-lan) 192.166.0.125 b0:cf:cb:ee:1c:9f
Sun Sep 10 15:53:53 2023 authpriv.info dropbear[26453]: Exit before auth from <192.166.0.239:50176>: Timeout before auth
Sun Sep 10 15:54:20 2023 daemon.info dnsmasq-dhcp[31147]: DHCPREQUEST(br-lan) 192.166.0.239 14:7d:da:33:7a:53
Sun Sep 10 15:54:20 2023 daemon.info dnsmasq-dhcp[31147]: DHCPACK(br-lan) 192.166.0.239 14:7d:da:33:7a:53 MBP

Blockquote

That’s not a dns issue. It’s a dhcp issue.

Do you have the router LAN IP set to the same as another router?