title: PYCURL ERROR 6 - "Couldn't resolve host 'mirrorlist.centos.org'"
body: <p>I have a problem with CentOS 6.4 on Hyper-V. I can't install using <em>yum</em> or ping any DNS address. There is a announcement: <code>Couldn't resolve host 'mirrorlist.centos.org'</code> etc.  I've been trying to fix it according to this video: <a href="http://www.youtube.com/watch?v=2BZHvVpXsg4" rel="noreferrer">http://www.youtube.com/watch?v=2BZHvVpXsg4</a> but still nothing. What should I do?
  <img src="https://i.stack.imgur.com/lXJd8.png" alt="yum"></p>
  
  <p><img src="https://i.stack.imgur.com/kW30K.png" alt="ifconfig"></p>
  
  <p><img src="https://i.stack.imgur.com/A1H1Z.png" alt="ping"></p>