Blacksands has included a few tools to test networking.
This command will produce a list of the Receiver's network adapter settings.
This command will produce a list of the arp tables that the Receiver has cached. This will help you diagnose internal network issues like conflicting networking.
This command will clear the Receiver Arp tables.
This command will reach out to an external webservice through WAN0 and run a network speediest. This will verify that you have access to the public internet.