title: Raspberry cannot resolve hostname
body: <p>I installed Debian version 2 on a Raspberry Pi, and I'm trying to use the Internet on it, but every time I try it I get a message saying "Cannot resolve host name".</p>
  
  <p>I was using the tutorial <em><a href="http://www.mathworks.com/help/simulink/ug/getting-the-raspberry_pi-ip-address.html" rel="nofollow">Configure Raspberry Pi Hardware to Mail IP Address Changes</a></em>, but it didn't work.</p>
  
  <p>How can I fix this problem?</p>