script to run VM with custom networking

deb-jessie.sh

#!/bin/sh

NAME=`basename -s .sh $0`
IMG="${NAME}.img"
IFNAME="${NAME}0if"
MAC="52:54:00:`echo $NAME |md5sum |perl -ne 's/^(..)(..)(..).*$/$1:$2:$3/; print $_'`"

OPTS="-enable-kvm -no-fd-bootchk -name ${NAME} -smp 8,cores=4,sockets=2 -m 1024"
NET="-net nic, macaddr=${MAC},vlan=3 -net tap,vlan=3,ifname=${IFNAME},script=no"

sudo ip tuntap add name $IFNAME mode tap
sudo brctl addif br0 $IFNAME
sudo ip link set $IFNAME up

#qemu-system-x86_64 -boot c -enable-kvm -m 1024 -cdrom /home/fisher/Downloads/ISO/debian-8.3.0-amd64-netinst.iso -hda deb-jessie.img -netdev user,id=network0 -device e1000,netdev=network0
qemu-system-x86_64 $OPTS -hda $IMG -boot c $NET


sudo ip link set $IFNAME down
sudo brctl delif br0 $IFNAME
sudo ip tuntap del name $IFNAME mode tap