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

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Message-ID: <45788BF8.2010908@redhat.com>
Date:	Thu, 07 Dec 2006 16:47:36 -0500
From:	Chris Lalancette <clalance@...hat.com>
To:	Neil Horman <nhorman@...driver.com>
CC:	linux-net@...r.kernel.org, mpm@...enic.com, akpm@...l.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] netpoll: make arp replies through netpoll use mac address
 of sender

Neil Horman wrote:
> 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.
> 
> Thanks & Regards
> Neil
> 
> Signed-off-by: Neil Horman <nhorman@...driver.com>
> 

Neil and I worked on this together, adding my ACK

Acked-by: Chris Lalancette <clalance@...hat.com>
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