Hi you all I will love to hear an expert opinion about a surprising discover i made. I was trying to help a friend that has a ZTE ZXDSL 831 modem to change his ip. He has 2 pc connected to the modem via wire and EACH PC HAS A DIFFERENT IP. I just could´nt believe. I know that all the theory you have read about ip´s does´nt support what i just told you but i made several test (using the show ip from Mozilla Firefox or going to pages like showip or showmyip) and confirmed that my friend had two ip with one internet connection. How can that be? somebody has an answer?.