I can no longer see two zones of audio connected by ethernet to the router or two remotes connected by wi-fi (from Airport extreme also connected to router). The Windows PC running the core is connected to a switch connected to the ethernet output of my Uverse DVR (along with a Denon AVR and a Cubox-i running Roon bridge). The Denon and Roon Bridge work fine.
Have you tried to reboot Core machine and your endpoints ?
Yes. No joy.
The problem is more widespread than I realized - I can’t print to network printers or see my NAS from the core PC. It may be that AT&T pushed some sort of update to their hardware this afternoon. Just a coincidence? I don’t know what to think! I can still see the setup/status pages from the router. All the working devices show their connection type as HPNA rather than ethernet, but that was the case before & everything worked fine…
Closed due to inactivity. If you are still seeing this issue, please open a new support thread.