netdev - Re: [RFC] bridge: allow passing link-local multicast

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Message-ID: <20110818081019.4b9bb79e@nehalam.ftrdhcpuser.net>
Date:	Thu, 18 Aug 2011 08:10:19 -0700
From:	Stephen Hemminger <shemminger@...tta.com>
To:	Nick Carter <ncarter100@...il.com>
Cc:	Ed Swierk <eswierk@...switch.com>, netdev@...r.kernel.org,
	David Lamparter <equinox@...c24.net>,
	bridge@...ux-foundation.org
Subject: Re: [RFC] bridge: allow passing link-local multicast

On Thu, 18 Aug 2011 16:06:19 +0100
Nick Carter <ncarter100@...il.com> wrote:

> Why can't we use the 802.1D specified STP group address to identify ?
> The existing code uses that address.
> I know you said on another thread that there are people using other addresses.
> Who are these people ?
> Are they following any standard ?
> What address / address range are they using ?

The group address can be reprogrammed, and it is settable on other
routing equipment. People do it to create spanning tree domains.
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