Control point MacOs 2021

[MiniMe]

- It is not unusual for a router to have problems with multicast discovery while working correctly in all other respects. -> Even if the router is just an input to the network switch?
- if you are using a UPnP control app on your phone or tablet without issues (is this also Linn Kazoo?) -> Lumin app without issues
- it seems the problem might be related to something on the Mac or the Mac version of Linn Kazoo. -> agreed this is a suspect
- When the server or player is missing from Kazoo on the Mac, does stopping and restarting Kazoo make the missing server or player appear? -> its behavior is stable even with stopping/starting the app or even the computer
- Does stopping and restarting the missing server or player make it appear? -> No change
- Either of these would suggest a UPnP discovery issue. -> so I assume no UPnP issues?