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Date:      Mon, 25 Jun 2012 18:23:56 -0400
From:      Robert Huff <roberthuff@rcn.com>
To:        "Christopher J. Ruwe" <cjr@cruwe.de>
Cc:        freebsd-questions@freebsd.org
Subject:   IPNAT seems to affect network performance? of jails on lo0 (10.0.0.0/24) - why?
Message-ID:  <20456.58620.356372.475182@jerusalem.litteratus.org>
In-Reply-To: <20120625221711.7aec82b8@dijkstra.cruwe.de>
References:  <20120625221711.7aec82b8@dijkstra.cruwe.de>

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Christopher J. Ruwe writes:

>  On a KVM virtualized host, I run FreeBSD 8.3-RELEASE-p3 and some
>  qjails, 8.3-RELEASE. The jails are connected all via lo0 on
>  10.0.0.0.
>  
>  While by the large working as expected, I have noticed one
>  pecularity I have failed to pinpoint: When launching processes
>  with some network interaction, like sshing into one of the jails
>  from the platform or launching emacs, the command spends ages (
>  ~(1-2) minutes) idling?  (nothing happens) before becoming
>  interactive.

	If the number is very close to 90 seconds, my first guess would
be you have a DNS problem.


					Robert Huff




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