PXE Imaging tripping port security

We are using Cisco switches in our environment and our network adminstrator
have enabled
port security so that only 1 MAC address works in the port.

On many PCs, when they PXE boot, it sends a different MAC address (always
starting with
00005A) then the MAC address of the NIC card and it trips port security.



We ar using the following configiration



Switch : Cisco Catalyst 4506 Switch

Server :Novell Netware 6.5 sp5 +Zenworks for Desktop 4.01 ir 7

Client OS: Windows 2000 SP4



It only occurs at a location with IR 7 for ZfD 4.01 installed.