Re: [DNSOP] CDS Bootstrapping for vanity DNS servers

John Levine <johnl@taugh.com> Wed, 22 June 2022 03:07 UTC

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From: John Levine <johnl@taugh.com>
To: dnsop@ietf.org
Cc: rubensk@nic.br
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Subject: Re: [DNSOP] CDS Bootstrapping for vanity DNS servers
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It appears that  <rubensk@nic.br> said:
>-=-=-=-=-=-
>
>
>Hi.
>
>During a meeting today of ROW (https://regiops.net), the I-D on CDS bootstrapping by using a DNSSEC-signed name at name server
>zone (https://datatracker.ietf.org/doc/draft-ietf-dnsop-dnssec-bootstrapping/) was discussed.
>In that discussion, it was mentioned that the current draft only supports out-of-bailiwick name servers; I replied that the
>same principle could be applied to in-bailiwick name server by usage of the reverse DNS zones for IPv4 and IPv6.

Urrgh. In principle, you can put anything you want in a reverse zone.
(Send mail to johnl@18.183.57.64.in-addr.arpa. and it'll work.)

In practice, I doubt that enough reverse zones are signed or that the
provisoning crudware that people use for reverse zones would work
often enough to be worth trying to do this. I did some surveys of 
zones and found that in-bailiwick NS are quite uncommon, only a few
percent of the ones in large gTLDs.

R's,
John