So, most implementations do some sort of prefetch thing now, and so the primary purpose of "hammer" has been achieved. But, I think it is still worth documenting the behavior. I'm planning on updating and then asking DNSOP to adopt and then publish this sometime...
W On Sat, Mar 26, 2016 at 5:36 PM Tony Finch <[email protected]> wrote: > Stephane Bortzmeyer <[email protected]> wrote: > > > > I've read it, noticed that it is not just a documentation of local > > practices but it wants to be published as BCP, and: > > > > * it is not clear which problem it is trying to solve. > > Thanks Stephane. I agree with your observations, with a couple of > amendments... > > > * caching SERVFAIL, as recommended (section 4), raises an interesting > > question: for how long? (Unlike NXDOMAIN, SERVFAIL answers do not > > provide an indirect TTL) > > This is a feature of the forthcoming BIND 9.11. The default servfail-ttl > is one second. (I don't know if other servers have a similar feature.) > > > https://source.isc.org/cgi-bin/gitweb.cgi?p=bind9.git;a=blob;f=CHANGES;hb=refs/heads/master#l1370 > > > * if someone really wants to do "pre-fetching" (section 5), it does > > not require a new RFC or an update of the name servers. Just request > > the names you want, through the resolver/cache. > > There was https://tools.ietf.org/html/draft-wkumari-dnsop-hammer which > seems to have been dropped through lask of interest. I think this is a > terrible shame, but I'm biased because of the first sentence of section 9. > > Tony. > -- > f.anthony.n.finch <[email protected]> http://dotat.at/ - I xn--zr8h > punycode > Fitzroy: Westerly or southwesterly 7 to severe gale 9, perhaps storm 10 > later. > Very rough or high, occasionally very high later in northwest. Rain or > showers. Moderate occasionally poor. > > _______________________________________________ > DNSOP mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/dnsop >
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