I have a Trend NET router. If I try to clone the MAC adresse my network stop working. I think it is the modem adresse into the computer as is changed or am I wrong?

I use Dynamic settings and use my Intel and have shoosen the "Gateway act as a DHPC-server". The DHPC List chows only 1 adresse. I have 4 computers added to the router but they chows not in the list. But all works and I can reach Internet on all 4. Should I unclick "Act as a DHPC-server" or is all normal? Perhaps if I uncheck it all will chow up but should it be any difference yet?

I have settings as require passwords from my Provider and I have talked to them and they said I not need this configuration as require a password. I use not a Proxy only a common DSN to my Internet.

What is you others experience?