More help needed please

[jim.marnell at cca-int.com]

Anyone else care to take a stab at why my rh 8 box with 2 nics cannot talk 
to each other. I'll try anything.
eth0 can ping itself
eth1 can ping itself
eth0 can ping eth1
eth1 CANNOT ping eth0
 
ip_forward has been set to 1
 
The only odd thing I can find is the absence of messages at startup 
regarding eth0 - could be normal since eth0 can ping the other nic and 
also other boxes.
[root at redfish root]# tail -400 /var/log/messages|grep -i eth1
Jun 24 10:16:01 redfish network: Bringing up interface eth1:  succeeded 
Jun 24 13:57:10 redfish network: Bringing up interface eth1:  succeeded 
[root at redfish root]# tail -400 /var/log/messages|grep -i eth0
[root at redfish root]# 
 
I appreciate any and all help on this problem.
Thanks
-Jim