10.4.2 Managing nameserver information –
resolvconf package provides a framework for dynamic management
of information about available nameservers. It solves the long standing
problem of how to maintain dynamic lists of nameservers for the resolver and
DNS caches to use. Resolvconf sets itself up as the intermediary between
programs that control network interfaces and supply nameserver information, and
applications that need nameserver information.
resolvconf is designed to work without any manual configuration
needing to be done. However, the package is quite new and may require some
manual intervention to get it to work properly. This is certainly true if you
have ever customized packages so that they update
/etc/resolv.conf: you will need to disable your customizations.