In UNET LLAPI, two sockets with same ID and port on one machine

In UDP, you normally can’t have two sockets with the same ID and port on the same machine, but there is a setting that lets you do this. I need to have two sockets with the same ID and port on the same machine in order to debug my game. How can I turn this setting on from UNET’s LLAPI?

The sockets don’t need to have the same port in order to connect. You just have to pass the right port in the Connect function.

I discovered this by reading the code in the example on this thread: http://forum.unity3d.com/threads/unet-sample-projects.331978/

This behavior is not mentioned in the docs.