Re: [DNSOP] Fw: New Version Notification for draft-arnt-yao-dnsop-root-data-caching-00.txt

[Bob Harold <[e-mail]>]

On Thu, Feb 14, 2019 at 12:29 PM Arnt Gulbrandsen <[e-mail]>
wrote:

> On Thursday 14 February 2019 14:58:58 CET, Tony Finch wrote:
> > How does this relate to:
> >
> > https://tools.ietf.org/html/draft-wkumari-dnsop-hammer
> > https://tools.ietf.org/html/draft-ietf-dnsop-7706bis
>
> It originates in various ideas Jiankang and I have chatted about.
>
> I didn't like 7706, because I feel that the servers that have long ping
> times to the nearest root are more likely to have admins who make
> mistakes.
> Jiankang and I discussed alternatives when we met a while ago, and a few
> times since. Once we hit upon this possibility, we didn't discuss
> draft-wkumari-dnsop-hammer, perhaps because it's expired and we'd
> forgotten. Mental entropy.
>
> Compared to the hammer draft, I should say that this is dead simple, has
> one fewer acronyms, and that both of those are intentional features.
>
> I see your name is in the text. Why did you let it expire?
>
> > It looks like this new draft is actually a revision of:
> >
> > https://tools.ietf.org/html/draft-yao-dnsop-root-cache
>
> Probably correct. IIt was I who did the typing, and I prefer to start by
> editing something that already has the right XML stuff and at least some
> references etc.
>
> Arnt
>

The draft assumes typical TTL is a week, but what I see in the root zone is:
 the records for X.root-servers.net are 6 days (518400),
DS, NSEC, RRSIG, and SOA are 1 day (86400), and
 A, AAAA, DNSKEY, and NS are all 2 days (172800).
I assume the NS records are the most often used?

So I think the draft needs to recalculate the numbers with 2 days as the
typical ttl.

awk '{print $2,$4}' root.zone | sort | uniq -c
      2
   4159 172800 A
   3648 172800 AAAA
      3 172800 DNSKEY
   7269 172800 NS
      2 172800 RRSIG
     13 518400 A
     13 518400 AAAA
     13 518400 NS
      1 518400 RRSIG
   2903 86400 DS
   1536 86400 NSEC
   2926 86400 RRSIG
      2 86400 SOA
      1 <<>> 9.11.3-1ubuntu1.3-Ubuntu
      1 global +cmd
      1 Query 8197
      1 SERVER:
      1 WHEN: Feb
      1 XFR 22488

-- 
Bob Harold