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

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On Thu, Feb 20, 2014 at 6:47 AM, Zoltan Kiss <zoltan.kiss@xxxxxxxxxx> wrote:
> On 19/02/14 16:45, Luis R. Rodriguez wrote:
>
>> You seem to describe a case whereby it can make sense for xen-netback
>> interfaces to end up becoming the root port of a bridge. Can you
>> elaborate a little more on that as it was unclear the use case.
>
> Well, I might be wrong on that, but the scenario I was thinking: a guest
> (let's say domain 1) can have multiple interfaces on different Dom0 (or
> driver domain) bridges, let's say vif1.0 is plugged into xenbr0 and vif1.1
> is in xenbr1. If the guest wants to make a bridge of this two, then using
> STP makes sense.

The bridging would happen on the front end in that case no?

>  I wanted to bring up CloudStack's virtual router as an
> example, but then I realized it's probably doesn't do such thing. However I
> don't think we should hardcode that a netback interface can't be RP ever.

My patch did allow for this but the root block flag that Stephen
mentioned can always be lifted.

  Luis
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