Why won't imac connect to the internet?
I have an Intel iMac running Monterey 12.6. It's connected direct to my router via ethernet and also via wifi. This is confirmed by its Network Settings panel. I have a MacBook Pro (M1) running the same version of MacOS. They are on the same desk. The MacBook connects via Wifi (I'm writing this description using it) and Ethernet via a Powerline device and adapter, but the iMac won't connect either via Ethernet or wifi. Restarting doesn't do anything. What can I do to restore normal activity?
iMac 27″, macOS 12.6