ubun2

Hello,
I need to test the performance of some networking equipment. Essentially I would like to setup one PC with two ethernet cards. Essentially I am sending traffice from one NIC (IP) to the second NIC (IP).  The issue which I am having is that the Kernel is too smart and routes the traffic internally without even touching the network interfaces. How can I disable the local routing and force the computer to send the traffic over the network interfaces.
 
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