# Add a virtual host similar than that:
# (e.g. in /etc/apache2/sites-available/example.com.conf)

<VirtualHost *:80>
  SSLEngine Off
  ServerName dyndns.example.com
  ServerAdmin webmaster@example.com
  DocumentRoot /var/www/dyndns
  DirectoryIndex dyndns.py
  ErrorLog /var/log/apache2/error.log
  CustomLog /var/log/apache2/access.log combined
  <Directory /var/www/dyndns>
      SetHandler cgi-script
      Options ExecCGI FollowSymLinks
  </Directory>
</VirtualHost>