qemu dual network 2

qemu-system-x86_64
 -enable-kvm
 -M q35
 -m 512
 -smp 2,sockets=1,cores=2,threads=1
 -device ioh3420,bus=pcie.0,addr=1c.0,multifunction=on,port=1,chassis=1,id=root.1
 -device ahci,bus=pcie.0,id=ahci
 -drive file=/dev/data/openstack-controller,id=disk,format=raw
 -device ide-hd,bus=ahci.0,drive=disk
 -drive file=/home/peter/archive/software/openSUSE/openSUSE-12.3-DVD-x86_64.iso,id=isocd
 -device ide-cd,bus=ahci.1,drive=isocd
 -net nic,macaddr=00:16:3e:4e:c5:20,model=virtio,name=nic1,vlan=0
 -net bridge,name=nic1,br=br1,vlan=0
 -net nic,macaddr=00:16:3e:4e:c5:23,model=virtio,name=nic2,vlan=1
 -net bridge,name=nic2,br=br0,vlan=1
 -boot menu=on
 -monitor stdio
QEMU 1.5.0 monitor - type 'help' for more information
(qemu) info network
hub 1
 \ nic2: index=0,type=tap,helper=/usr/lib/qemu-bridge-helper,br=br0
 \ virtio-net-pci.1: index=0,type=nic,model=virtio-net-pci,macaddr=00:16:3e:4e:c5:23
hub 0
 \ nic1: index=0,type=tap,helper=/usr/lib/qemu-bridge-helper,br=br1
 \ virtio-net-pci.0: index=0,type=nic,model=virtio-net-pci,macaddr=00:16:3e:4e:c5:20



# brctl show
bridge name     bridge id               STP enabled     interfaces
br0             8000.902b34307a16       yes             eth0
                                                        tap0
                                                        tap3
br1             8000.fe1cc01ae2fd       yes             tap2



eth0 = lan interface
tap0 = some other vm
tap3 = this vm's eth1
tap2 = this vm's eth0