On Fri, Sep 09, 2016 at 03:51:08PM -0700,
 Ben Campbell <b...@nostrum.com> wrote 
 a message of 25 lines which said:

> One minor question: In section 2, paragraph 3, which behavior is
> "this behavior"? The continuing to use cached data under the cut, or
> the cached non-existence itself?

Cached non-existence. It was clear before but the later addition of
paragraph 2 made it ambiguous. Thanks for noticing. I suggest to
replace paragraph 3 with:


Another exception is that a validating resolver MAY decide to
implement the "NXDOMAIN cut" behaviour (described in the first
paragraph of this section) only when the NXDOMAIN response has been
validated with DNSSEC.  See Section 8 for the rationale.

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