The solution was easy.  Dan Riley's message (thankfully step-by-step!) is
the way to make it work:
        You need to increase the number of udp hops, which is controlled by
the inet subsystem parameter udp_ttl.  You can probably do this from the
'dxkerneltuner' interface; if you're not a GUI kind of person, put
        inet:
                udp_ttl = 100
        into a file and then
                sysconfigdb -m -f [your file]
        which will update /etc/sysconfigtab, and will take effect on the
next reboot.  You can adjust on a running system without a reboot via
                sysconfig -r inet udp_ttl=100
Thanks to:
        Oisin McGuinness
        Claude Scarpelli
        Dan Riley 
        Serguei Patchkovskii
        Stuart Whitby
Mike
----------------------------------------------------------------------------
------------
Michael C. Pelley, B.Sc., Dipl.C.S.(MIS) 
        Internet Systems Administrator
        Network Operations Centre - Information Technology
        College of the North Atlantic, St. John's, NF A1C 6L8
        Tel: 709.758.7044 Fax: 709.758.7052 
        E-mail: michael.pelley_at_northatlantic.nf.ca
Received on Thu Feb 08 2001 - 13:10:21 NZDT