Hi
Based on the logs, it appears that the issue originates from the MTK ETH driver. The dnsmasq messages are likely just a side effect of the underlying problem.
Could you please help check or test the following?
- If your router was upgraded from an earlier firmware version with Keep Settings enabled, does performing a factory reset and reconfiguring the router from scratch help resolve the issue?
- If you disconnect all wired devices and leave only wireless clients connected, does the issue still occur? We previously had a similar case where the root cause was traced to a PC with a Realtek (RTL) network adapter. The problem was related to Wake-on-LAN (WoL) after the PC entered sleep mode or was powered off.
- If the issue still persists, please export the router logs and send them to us via private message for analysis.
(If possible, please perform the test with AdGuard Home disabled, as it can generate a large number of log messages when the network becomes unstable, which may overwrite the information we need to investigate the issue.)
