I have a Xiaomi ac2100 router, based on the MT7621 with the last official version and I am facing random disconnections. First with Wifi and then wired, I don't see a pattern or common cause for this errors.
System logs when the device is connected via Wifi show a "DHCP packet received on Wlan0 which has no address" and sometimes "deauthenticated due to inactive".
With the same device wired I don't get any error.
Any help please . I have an online exam in a few day and I need to use the problematic device.