title: What does MySQL "::1" hostname refer to?
body: <p>On a freshly installed (windows version of) MySQL 5.5.9 </p>
  
  <pre><code>SELECT user, host FROM mysql.user
  </code></pre>
  
  <p>gives:</p>
  
  <pre><code>user            host    
  
  root        localhost   
  root        127.0.0.1    
  root        ::1  
  localhost    
  </code></pre>
  
  <p>But what IP/hostname does <code>::1</code> stand here for?</p>