Remote use of XDMCP

[James Knott]

I currently have XDMCP running well on my local network, in that
computers on my home network can use it to access other computers.
However, when I try to connect via WiFi & VPN, one computer that works
well on the local lan, cannot connect.  I've used ethereal to see what's
 happening.  In the list below, the letters A & B indicate the source of
the packets.  "A" (10.x.x.x address) is a notebood connected via WiFi &
VPN and "B" (192.168.x.x) is my main desktop system. Both systems are
SUSE 10.0.  Ethereal, running on both the notebook and desktop shows the
following.

A XDMCD Query
B XDMCP Willing
A XDMCP Request
B XDMCP Accept
A XDMCP Manage (repeats 7 times)
B XDMCP Failed.

So, it's obvious the two systems are communicating, but unable to run an
X session.  Is there something that prevents a routed connection from
working?  Perhaps an address range issue?  Other ideas?

tnx jk
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