From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH] net/core: Allow tagged VLAN packets to flow through
 VETH devices.
Date: Thu, 21 Oct 2010 04:07:17 -0700 (PDT)
Message-ID: <20101021.040717.241928814.davem@davemloft.net>
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From: Ben Greear <greearb@candelatech.com>
Date: Fri, 15 Oct 2010 11:35:05 -0700

> When there are VLANs on a VETH device, the packets being transmitted
> through the VETH device may be 4 bytes bigger than MTU.  A check
> in dev_forward_skb did not take this into account and so dropped
> these packets.
> 
> This patch is needed at least as far back as 2.6.34.7 and should
> be considered for -stable.
> 
> Signed-off-by: Ben Greear <greearb@candelatech.com>

Applied, although a check of the vlan-capable netdev flag
might be appropriate to add.