Wi-Fi disconnects intermittently on device sleep if VPN On Demand is enabled

Originator:adam
Number:rdar://28389138 Date Originated:9/20/2016
Status:Open Resolved:No
Product:iPhone 7, iPhone 6s, iPod Touch (6th Gen) Product Version:iOS 10.0.1 (14A403)
Classification:Serious Bug Reproducible:Yes
 
If an iOS has a VPN profile installed, and that VPN is set to Connect On Demand, then when the device is locked, the Wi-Fi connection will drop. It doesn't happen every single time, but it happens about 50% of the time the device is locked.

The Wi-Fi connection remains dropped until the device is unlocked and a new VPN connection is established.

To reproduce

1. Install a VPN profile that includes a Connect On Demand setting (one that always connects)
2. Enable the VPN
3. Lock the device
4. Wait a few seconds
5. Turn the screen on (but do not unlock)
6. Wi-Fi icon will have disappeared

(Sometimes you have to do this a few times before it happens)

Comments


Please note: Reports posted here will not necessarily be seen by Apple. All problems should be submitted at bugreport.apple.com before they are posted here. Please only post information for Radars that you have filed yourself, and please do not include Apple confidential information in your posts. Thank you!