I just download Xcode 9 and was going through wireless debugging tutorials . I went through this link Wireless debugging but could not make out why my wireless debugging ico
The following steps worked for me:
To get the IP address of your iPhone:
On your iPhone, go to Settings -> Wi-FI and tap on the connected wifi network.
You will be able to see the your iPhone's current IP address for the selected Wi-Fi network.
This is working for me without any issues. Hope it helps you too