Push notifications to iOS require WiFi link when Ethernet used
There appears to be a bug in iOS (10.3.1) with push notifications and Ethernet. We use the Apple Lightning to USB 3 Camera Adapter and a USB Ethernet adapter to provide network to devices in the field. During a troublesome deployment we discovered that the Apple Push Notification Service (APNS) does not establish a connection if the WiFi radio is off or not joined to a known network. That WiFi network does not need to have valid internet, or even DHCP available, the device will choose a self assigned IP and then the APNS connection will use the Ethernet adapter.
I imagine this has something to do with how APNS behaves when both Cellular and WiFi are available. I'm curious if Apple TV has a similar bug, I imagine not, given the fact the Ethernet is built in and likely a more common scenario. Although a seldom used feature, the Lightning to USB to Ethernet configuration was feature in a past keynote (https://sixcolors.com/post/2016/03/apples-lightning-to-usb-3-adapter-bri...).
MDM commands are triggered by APNS messages which means MDM is not functional in an Ethernet only environment.
It was a tricky one to discover, requiring packet captures, and other network analysis to isolate, I hope this helps someone else in the future.
Recent Activity
-
Mobile Management Provider changed by Frank Klotz 2 weeks ago
-
Mobile Management Provider changed by bugfrisch 10 weeks ago
-
Mobile Management Provider changed by taylor 33 weeks ago
-
Mobile Management Provider changed by dmlarry 42 weeks ago
-
Mobile Management Provider changed by codeproof 42 weeks ago
-
Story added by Aaron Freimark 44 weeks ago
-
Mobile Management Provider changed by SteJohGbg 50 weeks ago
-
Story added by Aaron Freimark 1 year ago
-
Story added by Aaron Freimark 1 year ago
-
Mobile Management Provider changed by ZuluDesk 1 year ago
-
Wiki Page added by digitalmarketin... 1 year ago
-
Mobile Management Provider changed by Mahesh 1 year ago
-
Story added by Aaron Freimark 1 year ago
-
Mobile Management Provider changed by Neeraj 1 year ago
-
Story added by DaddyOfThr33 1 year ago
-
Story added by Aaron Freimark 1 year ago
-
Mobile Management Provider changed by sb-miradore 1 year ago
-
Story comment by Aaron Freimark 1 year ago
-
Story added by Aaron Freimark 1 year ago
-
Story added by Aaron Freimark 1 year ago