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best practices: 1. The old way of generating the localhost zones was not optimal both because they did not exist by default, and because they were not really aligned with BCP. There is no need to have the dynamic data that the make-localhost script generated, and good reasons to do this more "by the book." 2. In named.conf a. Clean up white space b. Add/clarify a few comments c. Slave zones from the root servers instead of using a hints file. This has several advantages, as described in the comments. d. Significantly revamp the default zones, including the forward localhost zone, and the reverse zones for IPv4 and IPv6 loopback addresses. There are extensive comments describing what is included and why. Interested readers should take the time to review the RFCs mentioned in the comments. There is also relevant information about the motivations for hosting these zones in the "work in progress" Internet-Draft, http://www.ietf.org/internet-drafts/draft-ietf-dnsop-default-local-zones-02.txt or its successor. It's also worth noting that a significant number of these empty zones are already included by default in the named binary without any user configuration. e. Because we're including a lot of examples of both local forward zones and slave zones in the default configuration, eliminate some of those examples. 3. Add new localhost-{forward|reverse} zone files, and an "empty" zone to support the changes in 2.d. above. The empty zone file isn't really empty in order to avoid a warning from BIND about a zone file that doesn't contain any A or AAAA records.
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