[cups.general] cupsd.conf configuration problem

[Ralph Blach]

I have three linx x86 redhat 9.0 systems and all are running cups

One of the systems is a print server and had physical printers attached 
to it.

Here is the topologh

------------------------------------------------------------------
   |                            |
-------------------------------                    
|-----------------------------
|hostname: server                                   Hostname:desktop
| 10.0.0.4/255.255.255.0   eth0                    
|10.0.0.2/255.255.255.0 eth0 |
| 10.1.0.1/255.255.255.252 tap                     
----------------------------
|
|/dev/lp0
|        ---------------------------|
|/dev/lp1                           |
--------------------------------    |
           |                        |-----Three configured printers
           |
--------------------------------
|hostname:isaac
| 10.1.0.2/255.255.255.252 tap1 |
---------------------------------

I have the three printers configured on the server and I have the server 
set
up to export it queues to the etire network.

On desktop this works fine.  It finds the printers wonderfully.

On Isaac, which is occasionally connected through a tap interface.
I cant get exported printers.
what do I have to put in the /etc/cups/cupds.conf file so that
the printer will show up correctly on isaac

When I run tcpdump on isaac and on server, I see not ipp traffic flowing 
over these interfaces

Any ideas

Chip