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Date: Mon, 18 Sep 2006 22:52:52 +0200
From: Lennert Buytenhek <buytenh@wantstofly.org>
To: Joerg Roedel <joro-lkml@zlug.org>
Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, davem@davemloft.net
Subject: Re: [PATCH] EtherIP tunnel driver (RFC 3378)
Message-ID: <20060918205252.GA6830@xi.wantstofly.org>
References: <20060911204129.GA28929@zlug.org>
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On Mon, Sep 11, 2006 at 10:41:29PM +0200, Joerg Roedel wrote:

> This driver implements the tunneling of Ethernet packets over IPv4
> networks for Linux. It uses the protocol defined in RFC 3378.

Check out the thread "[PATCH][RFC] etherip: Ethernet-in-IPv4 tunneling"
that was on netdev in January of 2005 -- a number of arguments against
etherip (and for tunneling ethernet in GRE) were raised back then.

One of the most significant ones, IMHO:

> Another argument against etherip would be that OpenBSD apparently
> mis-implemented etherip by putting the etherip version nibble in the
> second nibble of the etherip header instead of the first, which would
> probably prevent the linux and OpenBSD versions from interoperating,
> negating the advantage of using etherip in the first place.


cheers,
Lennert
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