先把Ubuntu 12.04更新一下
sudo apt-get update
sudo apt-get upgrade
sudo apt-get dist-upgrade
删除 Ebtables包
sudo aptitude purge ebtables
从安装源安装Open vSwitch (OVS)
sudo apt-get install aptitude apt-show-versions openvswitch-controller openvswitch-brcompat openvswitch-switch
最后,检查Open
vSwitch (OVS)的版本号信息
sudo ovs-vsctl --version