Binding RIS to an IP/Interface

Hi, I have a server (2003) with several NIC's and several
IP's per NIC.

However, I'm having trouble with DHCP and RIS; The problem
is that when a client contacts IP#1 to obtain DHCP
Lease/Boot Image, the server responds with a seemingly
random IP of a random Interface. Which ofcourse my clients
find puzzling and discard the whole session.

I've managed to sort out the DHCP problem by binding my
DHCP service to a single-IP'ed NIC, which works great.

My RIS server was also very cooperative until yesterday,
when it suddenly starts responding with another IP and
another NIC.

How do I solve this? Is there a way to bind the RIS/Binlsvc
(?) service to a specific IP and/or Interface?


TIA

Regards, Stian