ubuntu ovs install

modprobe -r bridge
apt-get install openvswitch-switch openvswitch-controller openvswitch-brcompat ruby vim nfs-common exim4 apticron rdist snmp snmpd
echo "blacklist bridge" > /etc/modprobe.d/bridge.conf
echo "BRCOMPAT=yes" >> /etc/default/openvswitch-switch
/etc/init.d/openvswitch-switch start
apt-get remove ebtables
depmod -a
update-initramfs -u
rm /etc/libvirt/qemu/networks/autostart/*