Hello,
i have nearly the same problem. From time to time most of my UnRAID Server is not able to connect to the internet.
SSH into UnRAID and ping or nslookup a WAN IP/DNS Address is successful, but not checking for plugin/docker updates, no access to Home Assistant Docker in Host Mode.
Restarting the Docker Service resolves the problem.
Any Ideas?
nas-diagnostics-20220725-2108.zip