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A listing of DNS serversA listing of DNS serversPosted Mar 16, 2003 10:59 UTC (Sun) by rickmoen (subscriber, #6943)In reply to: A listing of DNS servers by anr Parent article: A couple of alternative DNS servers anr asked: Please explain what makes you list djbdns under the "proprietary" category. Gladly. Prof. Bernstein's terms of usage, while very generous and commendable, do not include the right to fork (Open Source Definition provision #3 -- which is the central concept of open source). Thus, nobody else has the legal right to develop, maintain, and release modified versions. Also, when/if Prof. Bernstein ceases to issue new versions, the project will probably pretty much die for lack of legal right to maintain the code (except in private or as patch files). Please note that the term "proprietary" is not pejorative: It's a descriptive category, and includes a broad spectrum of licensing types, including Prof. Bernstein's benevolent source-available one on the liberal end. Prof. Bernstein feels that his abilitiy to control the package's quality justifies this limitation (and he may be right). But, as a result, djbdns/dnscache is most plainly not open source. As Sam says, Prof. Bernstein's DNS notes are a crucial resource for anyone wanting to truly understand DNS at a technical level, and I join Sam in recommending them to people. Rick Moen
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