title: Apache2 virtualhost "allow from" dynamic DNS hostname?
body: <p>I have a cloud-based apache2 web server, which serves multiple sites using various virtualhost conf files.</p>
  
  <p>One of the websites is for my development only, and is currently configured to only allow my current IP address.</p>
  
  <pre><code>    Order deny,allow
      Deny from all
      Allow from 1.2.4.5
  </code></pre>
  
  <p>However my IP changes once a week or so - so I'd prefer to use my dynamic DNS hostname. Alas this...</p>
  
  <pre><code>Allow from abc.ddns.net
  </code></pre>
  
  <p>... does not work. Can it be done?</p>