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Date: Wed, 14 Jan 2009 16:41:55 +0000
From: Jamie Lokier <jamie@shareable.org>
Subject: Re: [Qemu-devel] Re: [PATCH 1/5] virtio-net: Allow setting the MAC
	address via set_config
Message-ID: <20090114164155.GA6431@shareable.org>
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To: qemu-devel@nongnu.org
Cc: Mark McLoughlin <markmc@redhat.com>, dlaor@redhat.com, kvm <kvm@vger.kernel.org>

Alex Williamson wrote:
> > What if the guest will chose the host's mac?
> > Thinking about it, I don't think we should test that.
> > A concerned host mgmt app can add ebtables roles for such a case.
> > 
> > Maybe we can optionally allow/deny it?
> 
> What's the topology you're thinking of that the virtio-net MAC is also
> the host MAC?  I typically use a bridge with a tap device, so the
> virtio-net MAC is isolated from the host.  Thanks,

For example you might forward IPX packets to the guest and IP/ARP to
the host, using an ebtables rule to distinguish them.  From the
outside, it would look equivalent to a single host processing both IPX
and IP.

-- Jamie