netdev - Re: [PATCH v3 10/12] l2tp: Add L2TP ethernet pseudowire support

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Message-ID: <20100330093055.49336856@nehalam>
Date:	Tue, 30 Mar 2010 09:30:55 -0700
From:	Stephen Hemminger <shemminger@...tta.com>
To:	James Chapman <jchapman@...alix.com>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH v3 10/12] l2tp: Add L2TP ethernet pseudowire support

On Tue, 30 Mar 2010 17:18:19 +0100
James Chapman <jchapman@...alix.com> wrote:

> +
> +	/* Derive a MAC address for the new interface. We use the L2TP
> +	 * session's session-id to guarantee a system-wide unique
> +	 * address. This MAC is only visible within the L2TP session.
> +	 */
> +	dev->dev_addr[0] = 0x02; /* IEEE 802 local */
> +	dev->dev_addr[1] = 'L';
> +	memcpy(&dev->dev_addr[2], &sid, 4);

Why not random ether address?


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