Re: [Qemu-devel] Re: Network bridging without adding bridge with brctl, possible?

[Arnd Bergmann]

On Thursday 24 February 2011, Jan Kiszka wrote:
> On 2011-02-24 07:49, Gerhard Wiesinger wrote:
> > On Wed, 23 Feb 2011, Jan Kiszka wrote:
> >> Right, but if I set IP(eth0) == IP(macvlan0), I'm able to communicate
> >> between macvlan0 and mactapX, thus between guest and host. Just
> >> re-checked here, still works (after resolving the usual MAC address mess
> >> I caused by configuring manually).
> > 
> > Thnx for the tipp.
> > 
> > Did you use MAC(eth0) == MAC(macvlan0) or MAC(eth0) <> MAC(macvlan0) to 
> > get it to work?
> 
> The latter (I just let macvlan/tap choose their MACs).

You cannot set the two to the same MAC address while they are up, but I think
you can do

ip link set eth0 down
ip link set macvlan0 ${MAC_ETH0}
ip link set macvlan0 up

Doing that is a bit tricky if eth0 is your only connection to the machine...

        Arnd