We recently received several new XP Pro machines (Dell Optiplex) that we have added to our network (2003 AD and Linux). We uses static IP addresses and all machines have been setup and appear to be functioning as expected. Recently while troubleshooting another issue I was doing some network sniffing and saw that several machines were sending DHCP requests. I have tracked it down to the new PCs. It seems that the PCs that I have setup and assigned a static IP address do not send out the DHCP request, but the pcs that a coworker setup send out the requests even though they have been configured with a static IP. We have compared network interface configurations and everything appears to be the same. We have done the standard reboots, gpupdate /force etc and the pcs still send out 6 dhcp requests approximately every 10 minutes.
Any ideas what could be causing this? The tcpdump output is attached.
11:21:42.601710 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:24:e8:xx:xx:xx