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Date:	Thu, 14 Aug 2014 17:56:20 -0700
From:	Eric Dumazet <>
To:	Hannes Frederic Sowa <>
Cc:	Daniel Borkmann <>,
	Neil Horman <>,
	Jesper Dangaard Brouer <>,
	David Miller <>,
	netdev <>
Subject: Re: [RFC] packet: handle too big packets for PACKET_V3

On Fri, 2014-08-15 at 02:50 +0200, Hannes Frederic Sowa wrote:

> 5) Or let a setsockopt control the NETIF_F_GRO bit of an interface if it
> is bound to it? This will likely result in an implementation where we
> must count current TPACKET_V3 sockets disabling GRO on an interface,
> much like promisc counter.

loopback interface has MTU = 64K, it looks like the problem is not tied
to GRO.

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