Let me see if I can successfully explain what I want to do.   

I have a QNX box with NICs.  I want to "accept" packets for an IP address (other then mine) on one interface and forward
 it out the other without consuming it.  

So lets say one of my interfaces is 192.168.0.1 and other one is 192.168.100.1.  I want to accept packets for 10.0.0.1 
on 192.168.0.1 and forward them out through 192.168.100.1. 

I know I can use alias on the interface, but then the packet is going to be "consumed".  I dont want to consume it, but 
instead forward it out the other interface. (by the way I do start my stacks with forward option).  

I also tried using alias to accept packet and then added a route in the system to forward the accepted packet instead of
 consuming it.  But that does not work.  

Any suggestions, ideas.. ?

Thanks.