Re: [Qemu-devel] Hot reload network configuration

[Hu Keping]

>>  ... possibly changing to a different network.
That would be most interesting part.

On 2016/5/17 15:02, Markus Armbruster wrote:
> Stefan Hajnoczi <address@hidden> writes:
>
> > On Wed, May 11, 2016 at 08:50:54PM +0800, Hu Keping wrote:
> > > Is there any possible that start qemu with --net=none and then change the
> > > configuration of the network, say using tap for example?
> > Yes.  If your machine type supports PCI hotplug then you can use the
> > netdev_add and device_add commands.  This is equivalent to hotplugging a
> > NIC into a running machine.
> >
> > I don't have exact syntax because I haven't tested it, but it should be
> > similar to using the -netdev tap,id=netdev0 -device e1000,netdev=netdev0
> > command-line option syntax.
> Aside: we should be able to swap out the network backend without
> unplugging + plugging the frontend, in a way that looks like unplugging
> + plugging the network cable, possibly changing to a different network.
> As far as I know, we can't do that today, but it could be a fun project.
>
> .