OS 5 added a remote virtual interface (RVI) facility that lets
you use OS X packet trace programs to capture traces from an
iOS device. The basic strategy is:
1. Connect your iOS device to your Mac via USB.
2. Set up an RVI for that device. This creates a virtual
network interface on your Mac that represents the iOS device's
networking stack.
3. Run your OS X packet trace program, and point it at the RVI
created in the previous step.
If you don't pair the iOS device with the Mac, the technique won't work.
https://developer.apple.com/library/Mac/qa/qa1176/_index.htm...
If you don't pair the iOS device with the Mac, the technique won't work.