Just want to give some more detail to this. From the logs on the generic switch I see the following error messages on reboot: I: 46070 [DIS]Checking node lookup status for BF3EABE8BCEC00C9-00000000D02D30E3 after 45000 ms E: 46078 [DIS]OperationalSessionSetup[1:00000000D02D30E3]: operational discovery failed: 32 E: 46086 [DMG]Failed to establish CASE for subscription-resumption with error '32' I: 46095 [IM]Schedule subscription resumption when failing to establish session, Retries: 1 After about 10-15 minutes the Apple TV initiates a new case session tears down the old subscription and then creates a new one. So subscriptions are not being preserved and the only way it can be reestablished is if the Apple TV initiates a new Case session. I feel like this is new behaviour because it has been working in the past but I'm guessing an update has introduced it maybe?