network: 0.988
graphic: 0.925
semantic: 0.904
other: 0.827
performance: 0.809
device: 0.767
debug: 0.747
PID: 0.564
socket: 0.508
vnc: 0.480
boot: 0.349
permissions: 0.219
KVM: 0.204
files: 0.041

Is there a way to disconnect the network of guest?
Description of problem:
When guest is running,I wan to disconnect the network(not detach the net),which should keep disconnect after migrate or restart if we not reconnect it againt.  Whether qemu has some ways to do it?