2 Gateway IPs during PXE boot

I'm having a problem with multiple gateways showing up on some workstationswhen attempting to PXE boot for imaging. I have checked everything on our switches and in DHCP to see if I could find anything that would cause this and have found nothing. The odd part is that at two remote locations the primary (invalid) gateway is pointing to a switch on the same VLAN as the workstation is. After this first started I totally blew away the VM that ZCM was on and did a clean install, but I am still having the exact same issue... Any thoughts on what would cause this? It is not a problem within windows or OSX - only when pxe booting.

Thanks!!
Dennis