[dns-operations] Why non-repeating transaction IDs?

Florian Weimer fw at deneb.enyo.de
Fri Aug 3 07:59:30 UTC 2007

I see that people use lots of home-grown algorithms to get random, but
mostly non-repeating transaction IDs in their resolvers.  I can't find
the rationale for this; a straightforward PRNG or stream cipher seems
sufficient for this task.  Any pointers to RFCs or papers are

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