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

[Lutz Donnerhacke]

* Florian Weimer wrote:
> 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
> appreciated.

Classical "Not invented here" technology.