Date: Tue, 19 Aug 2003 19:12:46 +0200
From: Stephan von Krawczynski <skraw@ithnet.com>
To: "David S. Miller" <davem@redhat.com>
Cc: willy@w.ods.org, richard@aspectgroup.co.uk, alan@lxorguk.ukuu.org.uk,
       carlosev@newipnet.com, lamont@scriptkiddie.org, davidsen@tmr.com,
       bloemsaa@xs4all.nl, marcelo@conectiva.com.br, netdev@oss.sgi.com,
       linux-net@vger.kernel.org, layes@loran.com, torvalds@osdl.org,
       linux-kernel@vger.kernel.org
Subject: Re: [2.4 PATCH] bugfix: ARP respond on all devices
Message-Id: <20030819191246.027061dd.skraw@ithnet.com>
In-Reply-To: <20030819095302.7213ddd5.davem@redhat.com>
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	<20030819170751.2b92ba2e.skraw@ithnet.com>
	<20030819085717.56046afd.davem@redhat.com>
	<20030819185219.116fd259.skraw@ithnet.com>
	<20030819095302.7213ddd5.davem@redhat.com>
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On Tue, 19 Aug 2003 09:53:02 -0700
"David S. Miller" <davem@redhat.com> wrote:

> On Tue, 19 Aug 2003 18:52:19 +0200
> Stephan von Krawczynski <skraw@ithnet.com> wrote:
> 
> > On Tue, 19 Aug 2003 08:57:17 -0700
> > "David S. Miller" <davem@redhat.com> wrote:
> > 
> > > "Be liberal in what you accept, and conservative in what you send"
> > > -Jon Postel
> > 
> > If I understood what Richard said in this thread Jon just shot you
> > down. The conservative way to _request_ arp would definitely be to
> > request it from the "correct" subnet, because as a sender you ought
> > to give credit to knowing that "bad" boxes out there won't answer if
> > you do otherwise.
> 
> In the ARP request we are using the source address in the packet we
> are building for output.
> 
> If ARP doesn't work using that source address, we can only assume IP
> communication is not possible either.
> 
> It is the box not responding to this ARP which is preventing
> communication not the box creating the ARP request.

Please read my example from other email. Very simple to prove you wrong here.

Regards,
Stephan
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