We have enabled airgroup functionality on our mac registration SSID, where the user receives an MPSK after registering their device on clearpass. Airgroup is also enabled on eduroam. As we have the 'enforce registration' option enabled I was of the understanding that any device not registered on clearpass will not be able to have airgroup functionality with another device not registered on clearpass i.e. eduroam -> eduroam airgroup functionality. So, at least one of the devices must be registered on clearpass to able to have airgroup capabilities. OR the user will have to somehow onboard their headless device (Apple TV) onto eduroam, which can be tricky (hence why we have created the MPSK service), which in theory would work, as the Apple TV is a server, advertising itself, which would mean the Apple TV would be able to discover the users other device (also not registered on clearpass), because there is a server involved in the process.
The scenario we are facing is a user cannot mirror from their iPad to their Macbook, with both devices on eduroam.