[dnsext] Review of draft-ietf-dnsext-rfc1995bis-ixfr-00.txt (from Knot DNS team)

[Ondřej Surý <[e-mail]>]

Hi,

I got our head engineer of Knot DNS (Lubos Slovak he's in Cc:), who also implementor IXFR (from scratch) to review the document and here's the result (copying verbatim, just added references to sections and 'nit' words):

1) section 1.4 - nit: "makes freely use" -> s/freely/free

2) Section 2, page 8 - nit: "Therefore, is becomes apparent" -> s/is/it

3) Section 2, last paragraph - why has to RRSIG(SOA) follow the SOA in then AXFR-fallback example?

4) Section 6.2 - missing RFC2119 language; shoulds and mays are small caps, is that intentional?

5) And today new question have arrised: "What should IXFR client do if it receives incomplete multichunked IXFR response?"  A) discard whole transfer and start over; B) save usable chunks (e.g. use data to update zone from sn_o to sn_o+x, where sn_o+x < sn_n)

Ondrej on behalf of Lubos
P.S.: Our Knot DNS team (different people than one of the authors of this document) will do a full review in WGLC.

On 27. 3. 2012, at 10:07, [e-mail] wrote:

> 
> A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the DNS Extensions Working Group of the IETF.
> 
> 	Title           : DNS Incremental Zone Transfer Protocol (IXFR)
> 	Author(s)       : Alfred Hoenes
>                          Ondrej Sury
>                          Shane Kerr
> 	Filename        : draft-ietf-dnsext-rfc1995bis-ixfr-00.txt
> 	Pages           : 32
> 	Date            : 2012-03-27
> 
>   The standard means within the Domain Name System protocol for
>   maintaining coherence among a zone's authoritative name servers
>   consists of three mechanisms.  Incremental Zone Transfer (IXFR) is
>   one of the mechanisms and originally was defined in RFC 1995.
> 
>   This document aims to provide a more detailed and up-to-date
>   specification of the IXFR mechanism and to align it with the current
>   specification of the primary zone transfer mechanism, AXFR, given in
>   RFC 5936.  Further, based on operational experience, this document
>   juxtaposes to the original IXFR query a new query type, IXFR-ONLY,
>   that will likely be preferred over IXFR in specific deployments.
> 
>   This document obsoletes and replaces RFC 1995.
> 
> 
> A URL for this Internet-Draft is:
> http://www.ietf.org/internet-drafts/draft-ietf-dnsext-rfc1995bis-ixfr-00.txt
> 
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
> 
> This Internet-Draft can be retrieved at:
> ftp://ftp.ietf.org/internet-drafts/draft-ietf-dnsext-rfc1995bis-ixfr-00.txt
> 
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--
 Ondřej Surý
 vedoucí výzkumu/Head of R&D department
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