From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Lamparter <equinox@diac24.net>
Subject: Re: [PATCH v2] ethtool : Allow ethtool to set interface in loopback
 mode.
Date: Fri, 3 Dec 2010 17:03:33 +0100
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Cc: Ben Hutchings <bhutchings@solarflare.com>,
	linux-netdev <netdev@vger.kernel.org>,
	Tom Herbert <therbert@google.com>,
	David Miller <davem@davemloft.net>
To: Mahesh Bandewar <maheshb@google.com>
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On Thu, Dec 02, 2010 at 02:35:51PM -0800, Mahesh Bandewar wrote:
> This patch adds -L command-line option to switch loopback mode on/off
> and -l option to display current loopback mode on a specified interface.
[...]
> +.A1 on off
> +Switches loopback mode
> +.B on
> +or
> +.B off

What about devices that support different kinds of loopback, like MAC
loopback & PHY loopback? (No idea if we have kernel support for this
either...)


-David