I currently have an open topic on the Roon forum:
I am having issues with a fresh install of home assistant and roon on the same machine. Roon can not connect to audio devices. The only fix is to STOP the hassio_multicast container, and then start it Once I stop it and restart it, it all works ok. But, after a reboot, the error persists. Anyone have any ideas? Please note, I am quite new to linux.