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To: Dominik Kubla <kubla@sciobyte.de>
Cc: Paul Jakma <paul@clubi.ie>, linux-kernel@vger.kernel.org
Subject: Re: Arp problem
In-Reply-To: <Pine.LNX.4.33.0107240208460.10839-100000@fogarty.jakma.org>
	<20010724140916.F31198@intern.kubla.de>
From: Michael Poole <poole@troilus.org>
Date: 24 Jul 2001 08:17:16 -0400
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Dominik Kubla <kubla@sciobyte.de> writes:

> On Tue, Jul 24, 2001 at 02:10:33AM +0100, Paul Jakma wrote:
> 
> > if i have 2 logical subnets on the wire, linux listening on both, is
> > there any way to get linux to fully route packets between the 2
> > subnets?
> > 
> > at the moment it just issues a icmp_redirect, which isn't good enough
> > for certain hosts (eg win9x at least).
> 
> Solaris 8 ditto.
> 
> IMHO this is definitely a linux bug, since the kernel can not now about
> the true network topology: Cable sharing might just be used for this one
> system doing the routing/filtering/whatever between the two networks,
> while all the other hosts are in seperated switch segments. Not a common
> setup but you will see this often enough: head count is already 2... ;-)

This may be a stupid question, but does
  cat 0 > /proc/sys/net/ipv4/conf/eth0/send_redirects
help the problem any (for the proper value of "eth0")?  A college
roommate of mine once had the same problem, and clearing
send_redirects for the interface fixed it for him.

-- Michael Poole
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