Hi Stefan, If we don't assign 'id' for nic device, device name will be $model.$idx. The $idx are always 0 if we set nic by new style.
# qemu-upstream -device virtio-net-pci,netdev=h1 -netdev tap,id=h1 -device virtio-net-pci,netdev=h2 -netdev tap,id=h2 ... (qemu) info network virtio-net-pci.0: index=0,type=nic,model=virtio-net-pci,macaddr=52:54:00:12:34:56 \ h1: index=0,type=tap,ifname=tap0,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown virtio-net-pci.0: index=0,type=nic,model=virtio-net-pci,macaddr=52:54:00:12:34:57 \ h2: index=0,type=tap,ifname=tap1,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown it's introduced by commit d33d93b2 If we set links down by 'set_link virtio-net-pci.0', the first nic will be set down. But how to set the second link down by id? -- Amos.