On Sat, Mar 14, 2015 at 09:10:03PM +0100, Florian Weimer wrote: > We'd have to be reasonably sure that no resolver treats is as a > meta-type and turns the upstream response into a FORMERR upon seeing > it in the answer section. “NULLs are used as placeholders in some > experimental extensions of the DNS.” is not confidence-inspiring in > this regard.
On the other hand, it saves us the grief of allocating a code point, and it has an intuitive name: if I saw a NULL RR in a cache dump I'd immediately guess it was a placeholder. Your point is well taken, but if that hypothetical resolver behavior turns out not to commonplace, then I say let's run with it. -- Evan Hunt -- e...@isc.org Internet Systems Consortium, Inc. _______________________________________________ DNSOP mailing list DNSOP@ietf.org https://www.ietf.org/mailman/listinfo/dnsop
