Hi!

I saw many posts with the same symptoms, but wasn’t able to find any tutorial or a solution. It would be nice to have some debugging tutorial to collect more information (Or a modem that does it automatically)

I only have one modem that does 3 wifi networks(2.4G, combined, 5G). I have 7 devices that connect to 2.4G or 5G, sometimes I use combined

I have KPN Box 12 and my internet often stops working, requiring approximately 5 minutes to reconnect(Sometimes it takes too long so I restart modem, it helps)

I noticed that it often happens when I open my work laptop that automatically connects to corporate tailscale VPN, it may be related. Then internet stops

When it happens, I go to modem UI (http://192.168.2.254/2.0/gui/#/) and look for logs. Modem reports that internet is not available and logs show an error
Connection has been terminated: remote station is not answering to LCP Echo requests.
Connection to the Internet has been terminated. (Reboot, Reconfiguration, forced termination)

I tried resetting my modem, I tried changing cables, but it didn’t help. Maybe I need to try doing something with a fiber box or try another modem

Could you please help me and advise what can I do to investigate it further and solve it?