Re: [DNSOP] RFC 1035 vs. mandatory NS at apex?

S Moonesamy <sm+ietf@elandsys.com> Fri, 08 February 2019 17:07 UTC

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Date: Fri, 08 Feb 2019 09:06:20 -0800
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From: S Moonesamy <sm+ietf@elandsys.com>
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Subject: Re: [DNSOP] RFC 1035 vs. mandatory NS at apex?
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Hi Peter,
At 04:16 AM 07-02-2019, Petr Špacek wrote:
>here is a quiz for experienced RFC archeologists:
>
>https://tools.ietf.org/html/rfc1035#section-5.2
>section 5.2. Use of master files to define zones
>does not mention NS at apex at all, but it does explicitly mention SOA
>at apex. Can it be interpreted as if NS at apex is not mandatory?
>
>Funnily enough
>https://tools.ietf.org/html/rfc1035#section-5.3
>has an example which as NS at apex, but it is not clear from the text above.
>
>Is it mandatory or not? Should I submit erratum for RFC 1035?

RFC 1035 assumes that the reader is familiar with 
RFC 1034.  Section 5.2 of RFC 1035 discusses 
about validity checks to be performed on the 
master files used to define zones.  I would read 
Section 4.2 of RFC 1034 to understand the 
technical considerations, e.g. is a NS needed or 
not.  The examples in RFC 1035 are "primarily 
pedagogical".  I suggest taking into 
consideration that RFC 1035 is part of STD 13 for errata processing.

Regards,
S. Moonesamy