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Re: looking for terminology recommendations concerning non-rooted FQDNs


From: Eric Brunner-Williams <brunner () nic-naa net>
Date: Fri, 22 Feb 2013 14:10:02 -0800

On 2/22/13 11:01 AM, Andrew Sullivan wrote:
Without getting into metaphysics, we can think of the dot in the
presentation format as representing the separators in the wire
format.  In the wire format, of course, these separators are octets
that indicate the size of the next label.  And since the final label
is null, the separator indicates a zero length in the wire format.
Therefore, in the presentation format, the final separator is
indicative of the (null) root label after.

just keep in mind that while "." ought to be a label separator, the
utc's bidi algorithm allows the directionality of a label to "leak"
across the "period" character, where it is not a terminal character.

hilarity ensues.


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