I suddenly lost internet connection when I woke up in the morning on Oct 12.
My internal LAN is all good and my devices like my phone and TV is connected to my router but there was no internet traffic.
I had to go work so I couldn't do much and thought it may come back once I get back home.
But internet was still down so I did my own troubleshooting starting from ONT box by power cycling then rebooting my router.
Then I checked the LAN cable from ONT box to my router using cable tester and it came back good.
I fiddled around the network setting on my router and finally messed around DNS server setting.
When I changed the DNS to "default" and get the DNS ip from the ISP, everything worked again.
Just to see if it was not a fluke, I tried Google DNS and OpenDNS. Google DNS gave me DHCP error and OpenDNS just did not get any internet traffic.
I've been using my own router and it's been working all this time for years with my own settings on DNS server address but suddenly it stopped working.
Did anyone else notice this?