title: Wireshark is not capturing OpenFlow packets from Mininet
body: <p>Hi everyone I downloaded the ISO file for investigating SDN features from here: <a href="http://sdnhub.org/tutorials/sdn-tutorial-vm/" rel="nofollow noreferrer">http://sdnhub.org/tutorials/sdn-tutorial-vm/</a>. </p>
  
  <p>1) I run Mininet</p>
  
  <pre><code>sudo mn
  </code></pre>
  
  <p>to make basic topology</p>
  
  <p>2) Then I run wireshark</p>
  
  <pre><code>sudo wireshark &amp;
  </code></pre>
  
  <p>3) I tick all interfaces and start capturing
  4) In mininet I do </p>
  
  <pre><code>h1 ping h2
  </code></pre>
  
  <p>5) I apply filter in wireshark "openflow", "of",....
  6) But no OpenFlow packet are displayed</p>
  
  <p>Could you help me please what is wrong? Thanks       </p>
  
  <p><a href="https://i.stack.imgur.com/kWgNO.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/kWgNO.png" alt="enter image description here"></a>               </p>