linux-kernel - Re: [PATCH] netpoll: make arp replies through netpoll use mac address of sender

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Message-Id: <20061208.000727.23014207.davem@davemloft.net>
Date:	Fri, 08 Dec 2006 00:07:27 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	nhorman@...driver.com
Cc:	linux-net@...r.kernel.org, mpm@...enic.com, akpm@...l.org,
	linux-kernel@...r.kernel.org, clalance@...hat.com
Subject: Re: [PATCH] netpoll: make arp replies through netpoll use mac
 address of sender

From: Neil Horman <nhorman@...driver.com>
Date: Thu, 7 Dec 2006 14:45:53 -0500

> Back in 2.4 arp requests that were recevied by netpoll were processed in
> netconsole_receive_skb, where they were responded to using the src mac of the
> request sender.  In the 2.6 kernel arp_reply is responsible for this function,
> but instead of using the src mac address of the incomming request, the stored
> mac address that was registered for the netconsole application is used.  While
> this is usually ok, it can lead to failures in netpoll in some situations
> (specifically situations where a network may have two gateways, as arp requests
> from one may be responded to using the mac address of the other).  This patch
> reverts the behavior to what we had in 2.4, in which all arp requests are sent
> back using the src address of the request sender.
> 
> Signed-off-by: Neil Horman <nhorman@...driver.com>

Applied, and I'll push this to -stable, thanks Neil.

But please submit networking patches next time to
netdev@...r.kernel.org, most of the networking developers did not see
this patch because you sent it to the user help list (linux-net)
instead of the developer list (netdev).

Thanks again.
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