[General Maximus]

As jaster said. Most/the majority/all (I think I have covered my bases for ferretuk) good routers have the option to assign static ip addresses based on learned mac addresses so you can setup port forwarding etc. You might find that your router does this by default which would be cool but I am confised why a factory reset wouldn't clear it. Either way though, wouldn't you prefer/isnt it a good idea to assign static ips to each device if you have got the same pcs/laptops/printers/phones connecting to the router all the time.