udp broadcast problem ENETUNREACH error

Hi folks, I have a program that performs a udp broadcast to a specific
port. It works fine on RHat 8.0/x86 and Windows. I am now trying to run
it on linux 2.6.7 on PPC. When I run it I get a ENETUNREACH error
(101). I have the PPC system connected to the rhat 8.0 on a private
lan. The PPC is 192.168.103.11 and the RHAT box is 192.168.103.100.
Here is the PPC network info:

ifconfig
eth0 Link encap:Ethernet HWaddr 00:0A:95:B6:C1E
inet addr:192.168.103.11 Bcast:192.168.103.255
Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2460 errors:0 dropped:0 overruns:0 frame:0
TX packets:1571 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:177321 (173.1 Kb) TX bytes:138971 (135.7 Kb)
Interrupt:41 Base address:0xf400

route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface

Yes. the above is blank.

I presume I am missing some static route data. Can some kind soul
please advise? My attempts to add routes have not succeeded.

thanks,
bob