linux-kernel - Re: [PATCH] EtherIP tunnel driver (RFC 3378)

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Message-ID: <20060918205252.GA6830@xi.wantstofly.org>
Date:	Mon, 18 Sep 2006 22:52:52 +0200
From:	Lennert Buytenhek <buytenh@...tstofly.org>
To:	Joerg Roedel <joro-lkml@...g.org>
Cc:	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	davem@...emloft.net
Subject: Re: [PATCH] EtherIP tunnel driver (RFC 3378)

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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