IP traffic between two NICs on same box

Hi there!

I have a Linux box with several NICs. What I want is the following setup:

* eth1 - 192.168.100.1
* eth2 - 192.168.100.2
* a physical network connection between both interfaces.


Now I am looking for a way, to enforce IP traffic from 192.168.100.1 to 192.168.100.2 and back to use the network link and not being routed internally.

I have no problem with more esotheric solutions, if all fails, I guess I will code my way through the kernel, but of course I would prefer any less drastic solution.

Thx and regards

Harry
.