Sending data between two nics on one machine

Jereme Lamps lamps1 at
Thu Oct 25 03:45:39 UTC 2012

I have a machine (ubuntu 12.04) with 2 nics and I am trying to send data
between the two. However, when I iperf from one to the other, the OS is
optimizing it and the data is never actually being sent out on the network
(I want it to go through the switch).
Is there any way I can move one of the physical interfaces into a network
namespace and then try to iperf from there?

Any help would be greatly appreciated!

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