title: Fail configure DPDK in OVS:DPDK support not built
body: <p>I am installing DPDK in Open vSwitch (OVS). 
  <a href="https://github.com/openvswitch/ovs/blob/master/INSTALL.DPDK.md" rel="nofollow">https://github.com/openvswitch/ovs/blob/master/INSTALL.DPDK.md</a></p>
  
  <p>The problem is when I ran 2 commands like this. </p>
  
  <pre><code>export DB_SOCK=/usr/local/var/run/openvswitch/db.sock
  sudo ovs-vswitchd --dpdk -c 0x1 -n 4 -- unix:$DB_SOCK --pidfile --detach
  </code></pre>
  
  <p>I got error:</p>
  
  <blockquote>
    <p>ovs-vswitchd: DPDK support not built into this copy of Open vSwitch.</p>
  </blockquote>
  
  <p>Could anyone please explain to me how to fix this pronlem.
  Thank in advance for your help!</p>