Have you got access to the command line. Either a keyboard and screen plugged into your device or using ash to access it from another device.
If so you can type ping GitHub.com
Press enter and it will attempt to communicate with that address and give you a print out of what resulted
Same issue here. Started a fresh install, worked for a bit, stopped. Was still setting it up so I started over again with the exact same results. Works for a bit and then randomly stops. No way to resolve that I can find. Tried setting different DNS servers in GUI and via cli for the various docker instances and nada. So annoying and I’m regretting my decision to move aware from venv install.
I tried to restart the modem several times, tried to change the DNS, tried to change IP, tried to shut the firewall down, tried to format the SD, tried everything basically… but nothing works.
Can anybody help?
I have HomeAssistant HASSOS directly on Raspberry 4.