I am working with Openvswitch to create mpls vpn network on mininet platform. I am using Ubuntu 14.04 server with kernel version: 4.4.0-97-generic. I am trying to upgrade my openvswitch from 2.0.0 version to version 2.5.2 which is supported by kernel version 4.4.0 . I am following the steps for openvswitch upgrade guide given on Openvswitch upgrade guide When I