Re: [Qemu-devel] Re: [PATCH 1/5] virtio-net: Allow setting the MAC address via set_config

[Jamie Lokier]

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