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.
.