Re: [Netconf] Adam Roach's Discuss on draft-ietf-netconf-zerotouch-25: (with DISCUSS and COMMENT)

[Kent Watsen <[e-mail]>]

Hi Adam,

Thanks for your review!
See below for responses.

PS: please excuse my company's URL-mangler

Kent // principle author


-----Original Message-----
From: Adam Roach <[e-mail]>
Date: Thursday, November 29, 2018 at 5:16 PM
To: The IESG <[e-mail]>
Cc: "[e-mail]" <[e-mail]>, Mahesh Jethanandani <[e-mail]>, Bert Wijnen <[e-mail]>, Bert Wijnen <[e-mail]>, "[e-mail]" <[e-mail]>, Mahesh Jethanandani <[e-mail]>, NETCONF Working Group <[e-mail]>
Subject: Adam Roach's Discuss on draft-ietf-netconf-zerotouch-25: (with DISCUSS and COMMENT)
Resent-From: <[e-mail]>
Resent-To: <[e-mail]>, <[e-mail]>, <[e-mail]>
Resent-Date: Thursday, November 29, 2018 at 5:15 PM

Adam Roach has entered the following ballot position for
draft-ietf-netconf-zerotouch-25: Discuss

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----------------------------------------------------------------------
DISCUSS:
----------------------------------------------------------------------

> Thanks to everyone who worked on this document. I have one concern that I'd like
> to discuss before the document is published. It's possible that I'm mistaken
> about the way this is intended to work -- don't be shy about telling me I'm
> wrong.
>
> §4.2:
>
>>  To use a DNS server as a source of bootstrapping data, a device MAY
>>  perform a multicast DNS [RFC6762] query searching for the service
>>  "_zerotouch._tcp.local.".  Alternatively the device MAY perform DNS-
>>  SD [RFC6763] via normal DNS operation, using the domain returned to
>>  it from the DHCP server; for example, searching for the service
>>  "_zerotouch._tcp.example.com".
>
> RFC 6763 §4.1.2 defers to RFC 2782 for the structure of DNS-SD records; 
> and RFC 2782 indicates that these are of the format "_service._proto.name".
> In this case, "service" is one of the services registered with IANA at
> https://www.iana.org/assignments/service-names-port-numbers/service-names-\
> port-numbers.xhtml.  The service "zerotouch" is not registered in that
> registry, nor does this document register it there.
>
> Unless I'm confused about the way SRV records are intended to work, this
> document needs to register "zerotouch" in the service name table indicated
> above.


You are quite right.  Here is the Github commit to add an IANA registration
for the "zerotouch" service:  https://github.com/netconf-wg/zero-touch/commit/6280763339a3e91b9efb21703b26a6bdbf05349b.

Please let me know if you suggest any further changes.  

PS: I'm aware of Ben's comment regarding "zerotouch" being perhaps too
    generic.  I will likely change it to "sztp" to address this concern.



----------------------------------------------------------------------
COMMENT:
----------------------------------------------------------------------

> §4.2:
>
>>  Please see
>>  Section 3.1.3 in RFC4408 for how a TXT record can achieve this size.
>
> Please make this a citation instead of merely a mention of RFC 4408.

Fixed in my local copy.


Kent