netdev - Re: [PATCH net-next 4/7] openvswitch: Reset upper layer protocol info on internal devices.

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Message-ID: <CAEP_g=-giF74zveQgLsrAwS0kp2P3cj_O7mHaKKLVfKwQCNBag@mail.gmail.com>
Date:	Mon, 3 Sep 2012 17:57:39 -0700
From:	Jesse Gross <jesse@...ira.com>
To:	David Miller <davem@...emloft.net>
Cc:	netdev@...r.kernel.org, dev@...nvswitch.org,
	Chris Wright <chrisw@...hat.com>
Subject: Re: [PATCH net-next 4/7] openvswitch: Reset upper layer protocol info
 on internal devices.

On Fri, Jul 20, 2012 at 3:26 PM, Jesse Gross <jesse@...ira.com> wrote:
> It's possible that packets that are sent on internal devices (from
> the OVS perspective) have already traversed the local IP stack.
> After they go through the internal device, they will again travel
> through the IP stack which may get confused by the presence of
> existing information in the skb. The problem can be observed
> when switching between namespaces. This clears out that information
> to avoid problems but deliberately leaves other metadata alone.
> This is to provide maximum flexibility in chaining together OVS
> and other Linux components.
>
> Signed-off-by: Jesse Gross <jesse@...ira.com>

It was recently discovered that the bug that this patch fixes is
causing problems in the real world.  Can you please queue this for
stable in 3.4/3.5?  It's currently in Linus's tree as
7fe99e2d434eafeac0c57b279a77e5de39212636.
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