From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: [PATCH] veth: remove hardware checksum feature
Date: Thu, 25 Jul 2013 10:59:22 -0700
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Cc: netdev@vger.kernel.org, davem@davemloft.net
To: "Vitaly E. Lavrov" <lve@guap.ru>
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On Thu, 2013-07-25 at 21:20 +0400, Vitaly E. Lavrov wrote:
> The network device VETH can't support the feature NETIF_F_HW_CSUM.
> All locally generated packets have invalid checksum.
> Wrong commit http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8093315a91340bca52549044975d8c7f673b28a1 ( 
> kernel 3.9.0 )
> 
> Workaround "ethtool -K vethX tx off"
> 
> Possible patch:

No idea of what the problem is.

Could you elaborate ?