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From: Jan Engelhardt <jengelh@computergmbh.de>
To: "Gosney, JeremiX" <jeremix.gosney@intel.com>
Cc: linux-kernel@vger.kernel.org, "Peters,
	Gordon" <gordon.peters@intel.com>,
	"Sy, Dely L" <dely.l.sy@intel.com>
Subject: Re: ARP Bug?
Date: Sat, 15 Dec 2007 02:32:30 +0100 (CET)	[thread overview]
Message-ID: <Pine.LNX.4.64.0712150231090.22877@fbirervta.pbzchgretzou.qr> (raw)
In-Reply-To: <F2B6B9EAC551DA4AA8833629D55D9CA8482D4C@orsmsx418.amr.corp.intel.com>


On Dec 14 2007 17:11, Gosney, JeremiX wrote:
>Subject: ARP Bug?
>
>We've noticed the 2.6-based Linux systems in our test lab are
>experiencing some "ARP flux"-like symptoms.  
>
>The systems reply with eth0's hardware address to all ARP requests,

If you have the same subnet on multiple interfaces, only the
first interface will be served.

Case closed?

>regardless of the IP being queried.  Because of this, the system will
>only send and receive packets on eth0; if eth0 is brought down, the
>system is unreachable even though it still has several active
>connections.  With eth0 unplugged, none of the other interfaces are
>reachable (this is presumably a side-effect caused by the switch ARP
>cache.) Failover routes are defined in the routing table, but the system
>still will not send/receive packets out those interfaces.
>

I am not sure ARP even uses the routing table.

  reply	other threads:[~2007-12-15  1:32 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-12-15  1:11 Gosney, JeremiX
2007-12-15  1:32 ` Jan Engelhardt [this message]
     [not found]   ` <3A64AD58EE71B34FB333E733C62CDE3C04A83F60@orsmsx414.amr.corp.intel.com>
2007-12-19 18:30     ` Jan Engelhardt
2007-12-19 20:51 ` Chuck Ebbert
2008-01-30 12:29 Matti Linnanvuori
2008-01-30 12:31 ` Jan Engelhardt
2008-01-30 12:44 Matti Linnanvuori
2008-01-30 13:20 ` Andi Kleen
2008-01-30 13:28   ` Jan Engelhardt
2008-01-30 13:23 ` Jan Engelhardt

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