send/receive data via eth0/1 external loop ?

["Roland Kletzing" <devzero@web.de>]

Hello,
i`m searching for a while now, but i did not find a solution, so forgive when
i`m (as a user) asking for expert help here.

I want to do some network stress/burn-in and quality/reliability testing,
i.e. i want to send/receive large amounts of data trough the systems network
interfaces without the need of hogging the net or other systems.

so, that test should run "loopback", i.e. connecting eth0+1 via crossover cable
or via locally attached switch. I don`t want to use a second system for that.

testing at ip/tcp level would be favourable , but raw eth level would be also fine.

But how ?
What appears simple on a first view, seems to be difficult.... :(

All i came across is this report:
http://www.zyztematik.com/?p=10
and this description of a patch:
http://www.ssi.bg/~ja/send-to-self.txt

Does somebody know a proper way of achieving this without patching the
kernel ?

regards
Roland
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