netdev - [PATCH]: Fix netpoll arp_reply for multiple routers

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Message-ID: <4576EFD2.1070100@redhat.com>
Date:	Wed, 06 Dec 2006 11:29:06 -0500
From:	Chris Lalancette <clalance@...hat.com>
To:	netdev@...r.kernel.org
Subject: [PATCH]: Fix netpoll arp_reply for multiple routers

All,
     Attached is a patch to fix arp_reply when you have multiple possible routers doing ARP requests to you.  Currently arp_reply always replies to the MAC address that it was given when it starts.  However, if you have multiple routers that can ARP request you, you might respond to the wrong router; in which case the other router will eventually drop you from it's ARP cache and stop delivering packets to you.  The fix is to always reply to the router that asked you, not the one you have hard-coded.
     I do not have the setup to test this; the customer that does have the setup has tested the patch and reports that it fixes the problems they were having.


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

View attachment "linux-2.6.19-netpoll-arp_reply.patch" of type "text/x-patch" (1497 bytes)