I don't get it, can you explain it please ?
Just adding some extra information to be clear:
followed the instructions from here
virsh -c qemu:///system net-autostart default
error: failed to get network 'default'
error: Network not found: no network with matching name 'default'
So i created the virtual network 'default' virbr0 as isolated virtual network like here:
Is that the setting you talking about ? The other option i get while setting up virtual network is : Forwarding to physical network - Destination -physical device eth0 - Mode: Nat option /Routed option .