netdev - Re: [Xen-devel] [RFC v2 1/4] bridge: enable interfaces to opt out from becoming the root bridge

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Message-ID: <53024C58.4010900@citrix.com>
Date:	Mon, 17 Feb 2014 17:52:24 +0000
From:	Zoltan Kiss <zoltan.kiss@...rix.com>
To:	"Luis R. Rodriguez" <mcgrof@...not-panic.com>,
	<netdev@...r.kernel.org>
CC:	<kvm@...r.kernel.org>, "Luis R. Rodriguez" <mcgrof@...e.com>,
	<bridge@...ts.linux-foundation.org>,
	<linux-kernel@...r.kernel.org>,
	Stephen Hemminger <stephen@...workplumber.org>,
	<xen-devel@...ts.xenproject.org>
Subject: Re: [Xen-devel] [RFC v2 1/4] bridge: enable interfaces to opt out
 from becoming the root bridge

On 15/02/14 02:59, Luis R. Rodriguez wrote:
> From: "Luis R. Rodriguez" <mcgrof@...e.com>
>
> It doesn't make sense for some interfaces to become a root bridge
> at any point in time. One example is virtual backend interfaces
> which rely on other entities on the bridge for actual physical
> connectivity. They only provide virtual access.

It is possible that a guest bridge together to VIF, either from the same 
Dom0 bridge or from different ones. In that case using STP on VIFs sound 
sensible to me.

Zoli
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