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Re: [dns-privacy] Root Server Operators Statement on DNS Encryption

Frederico A C Neves <fneves@registro.br> Wed, 31 March 2021 12:45 UTC

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Date: Wed, 31 Mar 2021 09:45:35 -0300
From: Frederico A C Neves <fneves@registro.br>
To: Erik Kline <ek.ietf@gmail.com>
Cc: Stephen Farrell <stephen.farrell@cs.tcd.ie>, Eric Rescorla <ekr@rtfm.com>, "Hollenbeck, Scott" <shollenbeck=40verisign.com@dmarc.ietf.org>, "dprive@ietf.org" <dprive@ietf.org>, Rob Sayre <sayrer@gmail.com>
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Subject: Re: [dns-privacy] Root Server Operators Statement on DNS Encryption
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On Tue, Mar 30, 2021 at 05:53:59PM -0700, Erik Kline wrote:
> On Tue, Mar 30, 2021 at 5:33 PM Stephen Farrell <stephen.farrell@cs.tcd.ie>
> wrote:
> 
> >
> > Hiya,
> >
> > On 31/03/2021 01:24, Eric Rescorla wrote:
> > > As I said earlier, this seems overly conservative given our experience
> > with
> > > large scale TLS-based services.
> >
> > For the root servers, I don't get why QNAME minimisation
> > isn't enough? If it is enough, that'd imply to me that the
> > root server operators statement is fine, so long as it
> > is only read to apply to root servers and not TLDs.
> >
> 
> I had to think about this for a bit, because I didn't properly appreciate
> that before.
> 
> I think, "IN NS com." doesn't reveal much information.  But perhaps "IN NS
> sensitive-tld." could have privacy implications for some folks?

This suppose that tracking the subsequent TLS connection to the TLD
auth server would not reveal that "secret"...

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