Need Help Troubleshooting Two New MacBook Pros not functioning simultaneously seen as duplicate

[xxx (Banned - toxicity)]

This might be happening because you somehow cloned the RoonBridge from one MB to the other.

A Roon bridge/DietPi trap for the too clever (or lazy)

Don’t do this - Set up a DietPi with Roon bridge - OK Assign a static IP - OK Backup DietPi using PiCopier (a program to copy RPi OS) - OK Restore DietPI to new PI using PiFiller (reverse of PiCopier) - OK Assign a new static IP - OK Expect to access both Pi, at the same time, as endpoints - NFG All sorts of weird things happen, too many and varied to go into, but none will be what you want. Evidently when Roon bridge is installed it copies machine specific info, probably MAC address (?),…

A quick test would be to reinstall RoonBridge on one of the MBs. That will assign a new id.