On Mon, Sep 26, 2016 at 05:42:31PM +0000, Edward Lewis <edward.le...@icann.org> wrote a message of 92 lines which said:
> For consistency, the SHOULD's in the first paragraph ought to be > MAY's. Process-wise, I don't think it is reasonable to ask for a change in RFC2119 terms after the Working Group Last Call *and* the IESG approval. Otherwise, no work will ever be finished. In the technical side, see the answers by Shumon Huque. > As the authority server may change its version of a zone and the SOA > (with serial) is not in every response, it's impossible > (computationally undecidable) to know whether the answer with the > NXDOMAIN was created before or after lower data. Maybe the lower > data is "currently correct" and the NXDOMAIN is stale-ish. Or not. As Mark Andrews say, this is a very old DNS issue. Nothing new here, no new text required. _______________________________________________ DNSOP mailing list DNSOP@ietf.org https://www.ietf.org/mailman/listinfo/dnsop