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Date:      28 Jun 2001 22:32:50 +0200
From:      Dag-Erling Smorgrav <des@ofug.org>
To:        Wes Peters <wes@softweyr.com>
Cc:        Ruslan Ermilov <ru@FreeBSD.ORG>, Deepak Jain <deepak@ai.net>, net@FreeBSD.ORG, hackers@FreeBSD.ORG
Subject:   Re: fastforwarding?
Message-ID:  <xzp1yo4wdjh.fsf@flood.ping.uio.no>
In-Reply-To: <3B3AB4F8.184A2EFE@softweyr.com>
References:  <GPEOJKGHAMKFIOMAGMDICEOJDGAA.deepak@ai.net> <20010626093545.D49992@sunbay.com> <3B3AB4F8.184A2EFE@softweyr.com>

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Wes Peters <wes@softweyr.com> writes:
> The description there isn't very forthcoming.  fastforwarding caches
> the results of a route lookup for destination addresses that are not
> on the local machine, and uses the cached route to short-circuit the
> normal (relatively slow) route lookup process.  The packet flows 
> directly from one layer2 input routine directly to the opposing 
> layer2 output routine without traversing the IP layer.

And more importantly, without traversing ipfw or ipfilter.  In other
words, don't use this on a firewall.

DES
-- 
Dag-Erling Smorgrav - des@ofug.org

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