for me,the Eternet Shield im using not is missing the sticker with Mac address on it, What's worse,im living on Campus so i dont have my router but use the internet provided by Uni. In this situation, can i just use the Mac address and IP address .etc. given in your Sketch? or is there any way that i can figure out my own Mac address and IP address?
Go to walmart and get a netgear 614 router for $25 so you can do your testing with/without the university network.