The documentation explains that the NEPacketTunnelProvider's sleepWithCompletionHandler: and wake methods are called when the device is going to sleep or waking up. The expectation is that the device will enter and remain in a sleep state for some extended period of time. On iOS 17 we're seeing the PacketTunnelProvider receive wake calls almost immediately. Is there a known issue where the PacketTunnelProvider does Not remain in a sleep state? In our logging, we see the PacketTunnelProvider is constantly alternating between sleep/wake states. On iOS 16, these methods are called on an average of 42 seconds apart from each other. In some cases, we do see the device in a sleep state for 2 to 3 minutes. On iOS 17, these methods are called on an average of 6 seconds apart from each other. The device only sleeps for a few seconds and Not for minutes. This will drain the battery. Will the app be charged for battery usage if the OS decides Not to remain in sleep mode? Is there a bug where the an iOS 17 device running a VPN will not stay in sleep mode? Also, we do Not modify the NEVPNProtocol's disconnectOnSleep field. ie Should be defaulting to NO On a device running iOS 16.3.1, with the screen locked and un-plugged from a power source PID 4574: across 9.6 minutes (576 seconds) Connected to Wi-Fi. 10 calls (5 sleep / 5 wake) Avg frequency of 57.6 seconds apart. PID 4581: across 10.3 minutes (616 seconds) Wi-Fi disabled, Connected to Cellular. 22 calls (11 sleep / 11 wake) Avg frequency of 28 seconds apart. PID 4600: across 10.6 minutes (635 seconds) Connected to Wi-Fi. 12 calls (6 sleep / 6 wake) Avg frequency of 52.92 seconds apart. (576 + 616 + 635) = 1827 seconds. (10 + 22 + 12) = 44 calls. 1827 / 44 = 41.52 seconds. On a device running iOS 17.0 (Build 21A5326a), connected to Wi-Fi: PID 14357: across 94.7 minutes (5682 seconds) 1034 calls (517 sleep / 517 wake) Avg frequency of 5.5 seconds apart. PID 14412: across 92.5 minutes (5547 seconds) 508 calls (254 sleep / 254 wake) Avg frequency of 10.9 seconds apart. PID 14721: across 92.5 minutes (5547 seconds) 1248 calls (624 sleep / 624 wake) Avg frequency of 4.4 seconds apart. (5682 + 5547 + 5547) = 16776 seconds. (1034 + 508 + 1248) = 2790 calls. 16776 / 2790 = 6.01 seconds.