I have recently encountered a problem with my system and the assigned IP Address and was not sure why. I have a wireless desktop with it setup to get the IP address automatically but the system gets the wrong subnet mask every time. It gets 255.255.0.0. I do an ipconfig release_all and renew_all and the proper subnet is assigned. (255.255.255.0). Where is it getting the inappropriate address and why does it assign the correct one if I manually do a reset?