On Dec 15 2011, Kevin Darcy wrote:
To settle the question of "are 2 nameservers required by the RFCs?", I'm
surprised you guys missed this text in RFC 1034, Section 4.1:
A given zone will be available from several name servers to insure
its availability in spite of host or communication link failure. By
administrative fiat, we require every zone to be available on at
least two servers, and many zones have more redundancy than that.
This is an "administrative fiat", you can't get much clearer than that.
Indeed, that's a better quote than my one from RFC 1035. How did I miss it?
Well, it turns out that the word "two" above occurs at the beginning of a
line in rfc1034.txt, and I was searching for the string " two" ... :-(
[Too many false drops if you search for just the three-character string,
because of "network".]
--
Chris Thompson
Email: c...@cam.ac.uk
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