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I've got my Win 7 pc using Dynamic IP. I tried an ipconfig renew then release but I still get a the same for my PC, it doesn't chagne the IPv4

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forgot to add that this is a basic desktop PC at home over comcast – MSSucks Oct 26 '10 at 3:00
up vote 2 down vote accepted

There is no policy that requires a DHCP server to give a different address to a machine when a new address is requested. It must be configured by the system administrator to explicitly do so, provided the software allows it.

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this is a home PC (comcast cable modem) and a wireless linksys router – MSSucks Oct 26 '10 at 2:59
The answer stands regardless. – Ignacio Vazquez-Abrams Oct 26 '10 at 3:01
so I'm stuck with whatever Comcast's dns server serves to me – MSSucks Oct 26 '10 at 3:12
DHCP, not DNS​. – Ignacio Vazquez-Abrams Oct 26 '10 at 3:17
so then at a work situation, in the past if you have it set to dhcp on your PC, you could always reboot to get another that no longer the case? I'm not a network guru so bear with me. – MSSucks Oct 26 '10 at 3:21

Look at MadMacs to change your MAC address. Most likely the router on the other end is set up to hand out IPs on leases depending on MAC addresses in the arp table. In this case, getting a new MAC address means getting a new IP. Keep in mind that this may or may not work, depending on your ISPs configuration.

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