What’s an IP Address? Put simply, an IP address (short for Internet Protocol address) is a unique identifier for your machine. Computers have them, but so do tablets and smartphones.

Are you having trouble remembering what IP addresses are in use on your network? Jack Wallen shows you how to discover those addresses with two simple commands.

Looks like it's not "5 static IP addresses on 5 devices behind DSL modem in Bridge Mode", but 5 addresses behind PPPoE. If so, you need only one PPPoE connection on one of the routers (1), also ...