This is only and example built following this tutorial. I also used this to give a try to Unity Cloud Build.
To run this example, execute one has a standalone application and also run in editor (or run two standalone applications or more if you want to)
One of them needs to be the "LAN Host" and the others the "LAN Client".
That's all. This is only an example.
For further reading visit the tutorial's webpage.
GNUv3