[libvirt] RFC: Setting a permanent MAC address for virtual network bridges

Laine Stump laine at laine.org
Tue Dec 7 14:47:52 UTC 2010


On 12/07/2010 05:23 AM, Daniel P. Berrange wrote:
> On Tue, Dec 07, 2010 at 01:46:40AM -0500, Laine Stump wrote:
>> 2) When a bridge's MAC address is set in that way, as Daniel says,
>> no traffic passes. (Why is that, anyway?)
> A bridge device *must* have a MAC address that machines one of
> its enslaved devices. It can't have its own MAC address. The
> bridge will automatically obtain the MAC of the first interface
> enslaved normally.


Yeah, I understand that *is* the case. I'm just curious what the logic 
behind that is. It's certainly not the case for an actual hardware bridge...






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