Since FreeBSD 7.3-RELEASE, it has been possible to automatically setup a forwarding nameserver simply by adding
to /etc/rc.conf. This allows you to utilize a local resolver for better performance, and decreased network traffic while still relying on the benefits of your local network resolver.
When named is started, a forwarder configuration file is generated by using the the contents of /etc/resolv.conf
Modify /etc/resolv.conf so that the first nameserver queried is 127.0.0.1 which will be the caching nameserver running on the local system.
The file will be saved as /etc/namedb/auto_forward.conf. Make sure this file is included by uncommenting the following in in /etc/named.conf