title: How can I blacklist a particular IP address (dos.yaml does not seem to work)
body: <p>I have this dos.yaml file:</p>
  
  <pre><code>blacklist:
  - subnet: 202.113.48.130
    description: they are doing 1000s of requests for a nonexistent file
  </code></pre>
  
  <p>I did a <code>appcfg.py update .</code> some hours ago.
  The new console doesn't appear to show the blacklist at all, but the old one does and shows that the above address is blacklisted.</p>
  
  <p>However, the logs right up to this minute show that requests are coming from this IP address and are receiving 404 as reply.</p>
  
  <p>Is there any other step I need to take to make the blacklist work?</p>
  
  <p>Or is there an alternative to stop these constant requests for a nonexistent file?</p>
  
  <p>Thanks.</p>