Which BIND?
Before we discuss DNS in greater depth, we must first attend to an administrative detail. Every site on the Internet should, at a minimum, run BIND software version 9.x. BIND provides the software and libraries that are needed to perform DNS inquiries(9.3.4 is the latest release of 9.x as of this writing).
Unless you are already running the latest version, you should consider upgrading. The latest versions are available from http://www.isc.org/.
In this book, we won’t describe how to install BIND. Instead, you should refer to the book DNS and BIND, Fifth Edition, by Paul Albitz and Cricket Liu (O’Reilly).
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