Concise Guide to DNS and BIND, The

Staying Out of Trouble

RFC 1912 is titled "Common DNS Operational and Configuration Errors" and deals with common DNS configuration and data problems. It also comes with software—dnswalk, which is described in Chapter 7, "The DNS Tool Chest." dnswalk checks for a lot of these problems. Running some of the DNS checking tools described in Chapter 7 or found on the Net will help ensure that your setup stays healthy, so you can avoid troubleshooting DNS. Reading RFC 1912 is also a good idea. Reading RFC 2181, "Clarifications to the DNS Specification," will also help you gain insight into some of the things talked about in this chapter. For old-timers, it gives the reasons for some of the changes seen in DNS recently, which can cause problems in ...