Problems with SLP and DHCP

Hi,

We are using Client 4.9 SP2 with all postfixes on windows 2000 SP4
workstations.
We have DHCP server implemented on Windows 2003 server and configure it to
give out also SLP-DA and SLP-SCOPE.

DHCP requests working fine, Clients getting their IP-addresses, DNS-servers.
But they dont get the SLP-DA address via DHCP, also not SLP-SCOPE.
We analyzed IP packets and find out that DHCP inform packets (requests for
SLP information) are not sent out from workstation to DHCP server.

Windows XP workstations with Novell Clients 4.91 SP3 are working without any
problems.

Any ideas ?

Regards
Roman Lenarsic