Perhaps it's worse than that; log gives multiple instances of DHCP RENEW sent - No response for IPv4 And No Ranging Response received - T3 time-out Along with ToD request sent - No Response received And TOD server unavailable
My apologies for the late reply and for the issues you have been experiencing with the broadband connection.
I can see that my colleague Heather has checked your connection and there were no apparent issues that would cause an impact on your connection. The power levels are within range and there are no faults reported.
If you are still experiencing these disconnections, can you create a Broadband Quality Monitor as this will check the performance of your connection? If you do set up the BQM make sure that you go into your router settings > Advanced Settings > Ping > and tick Respond to ICMP echo requests sent to WAN IP.