DHCPv6 Option for IPv4-Embedded Multicast and Unicast IPv6 Prefixes
draft-ietf-softwire-multicast-prefix-option-15

[Ballot discuss]
* Section 3:

How can the ASM_mPrefix64 and SSM_mPrefix64 be (variable) as described in the packet format when the asm-length and the ssm-length MUST be set to 96? Not sure which of these is correct and which is wrong but one of these things (either the fixed length or the variable prefix) needs to be fixed.

* Section 4:

This section contains a bunch of must and may level requirements but contains the following "disclaimer" text.

"This section is not normative but specifies a set of configuration guidelines."

Not sure what the intent behind this is. Can you clarify?

[Ballot comment]
- (nit) section 3: it seems odd to say in the
figure that the prefixes are variable length but to
then say the lengths of two of them MUST be 96
bits. (I do think having the fields as is is good
for futureproofing, but would suggest changing the
figure.)

- (non-nit:-) section 3: I'm not getting why the
unicast-length can be >96? And what if the prefix
length is not one of those given in RFC6052? Don't
you need to say it needs to be?

- (not sure about nittyness:-) section 5: 1st
bullet: I'm not following what "matches" means
here. Probably my ignorance but is it clear?

(Via drafts-lastcall-comment@iana.org): IESG/Authors/WG Chairs:

The IANA Services Operator has completed its review of draft-ietf-softwire-multicast-prefix-option-11.txt. If any part of this review is inaccurate, please let us know.

The IANA Services Operator understands that, upon approval of this document, there is a single action which we must complete.

In the Option Codes subregistry of the Dynamic Host Configuration Protocol for IPv6 (DHCPv6) registry located at:

https://www.iana.org/assignments/dhcpv6-parameters/

a single, new registration is to be made as follows:

Value: [ TBD-at-registration ]
Description: OPTION_V6_PREFIX64
Reference: [ RFC-to-be ]

Because this registry requires Expert Review [RFC5226] for registration, we've contacted the IESG-designated expert in a separate ticket to request approval. Expert review should be completed before your document can be approved for publication as an RFC.

The IANA Services Operator understands that this is the only action required to be completed upon approval of this document.

Note:  The actions requested in this document will not be completed until the document has been approved for publication as an RFC. This message is only to confirm what actions will be performed.

Thank you,

Sabrina Tanamal
IANA Services Specialist
PTI

The following Last Call announcement was sent out:

From: The IESG
To: "IETF-Announce"
CC: softwires@ietf.org, softwire-chairs@ietf.org, draft-ietf-softwire-multicast-prefix-option@ietf.org, ianfarrer@gmx.com, terry.manderson@icann.org
Reply-To: ietf@ietf.org
Sender:
Subject: Last Call:  (DHCPv6 Option for IPv4-Embedded Multicast and Unicast IPv6 Prefixes) to Proposed Standard


The IESG has received a request from the Softwires WG (softwire) to
consider the following document:
- 'DHCPv6 Option for IPv4-Embedded Multicast and Unicast IPv6 Prefixes'
  as Proposed
Standard

The IESG plans to make a decision in the next few weeks, and solicits
final comments on this action. Please send substantive comments to the
ietf@ietf.org mailing lists by 2017-01-12. Exceptionally, comments may be
sent to iesg@ietf.org instead. In either case, please retain the
beginning of the Subject line to allow automated sorting.

Abstract


  This document defines a Dynamic Host Configuration Protocol version 6
  (DHCPv6) Option for multicast IPv4 service continuity solutions,
  which is used to carry the IPv6 prefixes to be used to build unicast
  and multicast IPv4-embedded IPv6 addresses.




The file can be obtained via
https://datatracker.ietf.org/doc/draft-ietf-softwire-multicast-prefix-option/

IESG discussion can be tracked via
https://datatracker.ietf.org/doc/draft-ietf-softwire-multicast-prefix-option/ballot/


No IPR declarations have been submitted directly on this I-D.