Re: strange behavior on loopback-devices 2.0.x - 2.2.x

Andi Kleen (ak@muc.de)
12 Feb 1999 16:07:21 +0100


In article <36C39522.A7565421@ontika.net>,
chaosman@ontika.net (Kai Bankett) writes:
> Hi all !
> I've noticed a stange behaviour on loopback-devices ...
> If I use tcpump on the interface lo each packet is shown twice to me (2
> x incoming, 2 x outgoing). Maybe this is an unwanted behaviour ?!? (I
> didn't find anything about this behaviour in any documentation about
> loopback-devices)

This is expected behaviour. The packets are passed to tcpdump once when
they are send and once when they are received.

> Maybe someone can have a look at it ?

There are no plans to change it.

-Andi

-- 
This is like TV. I don't like TV.

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