netdev - Re: [RFC NET 00/02]: Secondary unicast address support

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Message-ID: <467ACDE1.7070907@trash.net>
Date:	Thu, 21 Jun 2007 21:13:37 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
CC:	netdev@...r.kernel.org, shemminger@...ux-foundation.org,
	davem@...emloft.net, jeff@...zik.org
Subject: Re: [RFC NET 00/02]: Secondary unicast address support

Eric W. Biederman wrote:
> I'm trying to understand what the point of this patch is.
>
> In once sense I find the concept of filtering and listening for multiple
> mac addresses very interesting, especially if we could break out different
> streams of traffic by destination mac address into separate network devices.
> This would remove the need to any kind of ethernet tunnel and makes multiple
> network namespaces much more pleasant.
>
> However this just seems to allow a card to decode multiple mac addresses
> which in some oddball load balancing configurations may actually be
> useful, but it seems fairly limited.
>
> Do you have a specific use case you envision for this multiple mac
> functionality?
>   

Yes, please see the MACVLAN patch I posted one or two days earlier.
8021q can also make use of it and Dave mentioned some virtualization
devices want this as well.


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