Another field in the DNS

Mark Andrews Mark_Andrews at
Tue Mar 3 22:25:45 CET 2009

In message <20090303105132.20169.qmail at>, John Levine writes:
> >I just tried and got back in the question section, and
> >pointers to that same name in the answer section. If a server wanted
> >to send back an answer with different upper/lower casing, would it be
> >wise to do that in the answer section? Or would it be better to do it
> >in the additional section?
> Don't change the case in the answer -- people have observed that DNS
> servers consistently preserve the case of the request in the response,
> and are now using randomized case in DNS lookups as a heuristic to
> deter poisoning attacks.

	That is the QUESTION section.  The ANSWER section is fair game.
> I don't have an opinion about the wisdom of adding extra stuff to the
> additional section, although I share concerns about how well existing
> DNS lookup and cache software would handle it.
> Regards,
> John Levine, johnl at, Primary Perpetrator of "The Internet for Dummies
> ",
> Information Superhighwayman wanna-be,, ex-Mayor
> "More Wiener schnitzel, please", said Tom, revealingly.
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Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark_Andrews at

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