> > Have you read the Errata for RFC5952?  I'm fairly certain it now says that
> > the digits a-f must be uppercase, except where user derived, though I think
> > this is a fairly recent correction.
> 
> That's an absolutely terrible errata: "old-skool assemblers didn't 
> accept lower-case hex digits, neither should we, stop being lazy and hit 
> the shift key". I seriously hope it doesn't make it in on those grounds 
> (I am agnostic on the upper/lower issue per-se, but that's a terrible 
> rationale).

That "errata" was discussed on IPv6 lists, with agreement that this 
was *not* acceptable as an errata.

Steinar Haug, Nethelp consulting, [email protected]
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