title: How to run wireshark on mininet?
body: <p>I am trying to run wireshark on mininet using a ssh session but it does not work I have this error : </p>
  
  <pre><code>  error: XDG_RUNTIME_DIR not set in the environment.
  </code></pre>
  
  <p>and also this error :</p>
  
  <pre><code>  (wireshark:1945): Gtk-WARNING **: cannot open display:
  </code></pre>
  
  <p>I will appreciate your help thanks !!</p>