This may turn out to be the kiss of death but my Sonos devices have been available for the last 3 days.
Only thing I did 3 days ago was:
- remove devices from Roon
- remove reserved IP for Sonos devices
- restart network
- reassign reserved IP for Sonos devices
- restart network
- add devices back to Roon.
Kind of missing restarting ROCK several times a day now… 