On Jun 4, 2015, at 4:05 PM, Tony Finch <d...@dotat.at> wrote:
> Are there any implementations of this draft?

Assuming you mean "is anyone deploying the ideas in this draft, particularly 
those in Appendix B", that would be good information for the authors to have.

> If resolvers are encouraged to use NSEC records to synthesize NXDOMAIN
> responses, would there still be any point to this draft?

Yes. No one has written up a document on using NSEC records to synthesize 
NXDOMAIN for the root, and if they do, there will certainly be operational 
considerations for that that are different than the operational considerations 
for this draft. I'm not saying one would be better than the other, but I 
suspect that the operational description of this draft would be easier for an 
operator to understand.

--Paul Hoffman
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