1. Visit the router's IP address in a new browser window.
http://192.168.1.1 is the default Draytek Vigor 2600 Series router IP address.
4. Type in OpenDNS addresses in Primary IP Address and Secondary IP Address under the DNS Server IP Address fields.
Please write down your current DNS settings before switching to OpenDNS, in case you want to return to your old settings for any reason.
The addresses for Open DNS are:
After clicking the OK button, we highly suggest that you flush your DNS resolver cache and web browser caches to ensure that your new DNS configuration settings take immediate effect.
Instructions courtesy of David Couzens