Re: question about 3sec timeouts with tcp

From: Bernd Eckenfels
Date: Wed Apr 02 2008 - 21:02:24 EST


In article <47F3C839.7080808@xxxxxxx> you wrote:
> tcpdump is always working in promiscous mode I think:
> Apr 2 13:02:27 192.168.1.99 kernel: device eth0 entered promiscuous mode

Unless you pass it the -p option. However promisc mode does not mean it
bypassses more/less network stack code. The hooks for the package capturing
are still early in the input processing, but still after all the
Interrupt/Queueing code which can potentially drop or delay packets.

However I think its a sign that it is not in the TCP path but below.

Gruss
Bernd
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