As required by RFC 4858, this is the Document Shepherd Write-Up
for: IPv6 Performance and Diagnostic Metrics (PDM) Destination Option
draft-ietf-ippm-6man-pdm-option-03
The version of this template is dated 24 February 2012.
(1) What type of RFC is being requested (BCP, Proposed Standard, Internet
Standard, Informational, Experimental, or Historic)? Why is this the proper
type of RFC? Is this type of RFC indicated in the title page header?
Proposed Standard
(2) The IESG approval announcement includes a Document Announcement Write-Up.
Please provide such a Document Announcement Write-Up. Recent examples can be
found in the "Action" announcements for approved documents. The approval
announcement contains the following sections:
Technical Summary:
To assess performance problems, measurements based on optional
sequence numbers and timing may be enabled in packets of a
particular flow using a new Destination Options Header. Such
measurements may be interpreted in real-time or after-the-fact.
This document gives a specification of the existing IPv6
Destination Option extension header,
called the Performance and Diagnostic Metrics (PDM) Destination
Option. The document also provides the field limits, calculations,
and usage of the PDM in measurement.
Working Group Summary:
After years of discussion, consideration, and revision, the working
group adopted the draft and then moved smoothly to consensus in
another year, aided by the implementation of the option in Free BSD.
Document Quality:
This document was reviewed at many occasions by the measurement and
IPv6 communities.
Personnel:
Who is the Document Shepherd? Who is the Responsible Area Director?
The document shepherd is Al Morton (was formerly Bill Cerveny).
Spencer Dawkins is the responsible area director.
(3) Briefly describe the review of this document that was performed by the
Document Shepherd. If this version of the document is not ready for
publication, please explain why the document is being forwarded to the IESG.
Bill Cerveny provided an editorial review, and his comments were addressed in
version 03. Al Morton reviewed the document many times in WG review and Last
Call, and his comments have been shared with the authors.
(4) Does the document Shepherd have any concerns about the depth or breadth of
the reviews that have been performed?
No. There have been reviews by experts in v6ops, 6man and IPPM.
(5) Do portions of the document need review from a particular or from broader
perspective, e.g., security, operational complexity, AAA, DNS, DHCP, XML, or
internationalization? If so, describe the review that took place.
No
(6) Describe any specific concerns or issues that the Document Shepherd has
with this document that the Responsible Area Director and/or the IESG should be
aware of? For example, perhaps he or she is uncomfortable with certain parts of
the document, or has concerns whether there really is a need for it. In any
event, if the WG has discussed those issues and has indicated that it still
wishes to advance the document, detail those concerns here.
None
(7) Has each author confirmed that any and all appropriate IPR disclosures
required for full conformance with the provisions of BCP 78 and BCP 79 have
already been filed. If not, explain why?
Yes
(8) Has an IPR disclosure been filed that references this document? If so,
summarize any WG discussion and conclusion regarding the IPR disclosures.
IPR was disclosed in the form of an early filing on
draft-elkins-ippm-6man-pdm-optionhttps://datatracker.ietf.org/ipr/2257/
Since the provisional filing (2013) was not followed-up, the time limit has
expired and the provisional filing is no longer valid. See:
http://www.uspto.gov/patents-getting-started/patent-basics/types-patent-applications/provisional-application-patent
The current filing
https://datatracker.ietf.org/ipr/2815/
reflects this status accurately.
There is no evidence of IPPM WG discussion of IPR revealed in list
search, and only one message on v6ops:
https://mailarchive.ietf.org/arch/msg/v6ops/x6wwSViK6Wl32-yru0csA1_2Bb8
(which indicates an issue with the licensing terms of another
draft, not PDM.)
(9) How solid is the WG consensus behind this document? Does it represent the
strong concurrence of a few individuals, with others being silent, or does the
WG as a whole understand and agree with it?
Among the individuals who have reviewed and provided comments,
there now appears to be agreement with the content and concurrence
that the draft is ready.
(10) Has anyone threatened an appeal or otherwise indicated extreme discontent?
If so, please summarise the areas of conflict in separate email messages to the
Responsible Area Director. (It should be in a separate email because this
questionnaire is publicly available.)
No.
(11) Identify any ID nits the Document Shepherd has found in this document.
(See http://www.ietf.org/tools/idnits/ and the Internet-Drafts Checklist).
Boilerplate checks are not enough; this check needs to be thorough.
The Abstract appears after the ToC, which is an odd order of front-matter.
(12) Describe how the document meets any required formal review criteria, such
as the MIB Doctor, media type, and URI type reviews.
Not applicable.
(13) Have all references within this document been identified as either
normative or informative?
Yes
(14) Are there normative references to documents that are not ready for
advancement or are otherwise in an unclear state? If such normative references
exist, what is the plan for their completion?
No
(15) Are there downward normative references references (see RFC 3967)? If so,
list these downward references to support the Area Director in the Last Call
procedure.
No.
(16) Will publication of this document change the status of any existing RFCs?
Are those RFCs listed on the title page header, listed in the abstract, and
discussed in the introduction? If the RFCs are not listed in the Abstract and
Introduction, explain why, and point to the part of the document where the
relationship of this document to the other RFCs is discussed. If this
information is not in the document, explain why the WG considers it unnecessary.
No
(17) Describe the Document Shepherd's review of the IANA considerations
section, especially with regard to its consistency with the body of the
document. Confirm that all protocol extensions that the document makes are
associated with the appropriate reservations in IANA registries. Confirm that
any referenced IANA registries have been clearly identified. Confirm that newly
created IANA registries include a detailed specification of the initial
contents for the registry, that allocations procedures for future registrations
are defined, and a reasonable name for the new registry has been suggested (see
RFC 5226).
The IANA section was revised as a result of review with the
Document Shepherds(both past and present), and now meets these
requirements.
(18) List any new IANA registries that require Expert Review for future
allocations. Provide any public guidance that the IESG would find useful in
selecting the IANA Experts for these new registries.
None
(19) Describe reviews and automated checks performed by the Document Shepherd
to validate sections of the document written in a formal language, such as XML
code, BNF rules, MIB definitions, etc.
Not applicable
Shepherd's (editorial) comments (Al, on version 03)
112 ... An
113 implementation of the existing IPv6 Destination Options extension
114 header, the Performance and Diagnostic Metrics (PDM) Destination
115 Options extension header has been proposed in a companion document.
acm: It would be good to provide a reference to the
companion document here, if possible.
Also, "proposed" appears 5 times in the text,
it's more accurate to say "defined" now that this
doc has reached WG consensus (at least) and will soon
be an RFC.
1129 8 Security Considerations
1131 The PDM MUST NOT be changed dynamically via packet flow as this
1132 creates a possibility for potential security violations or DoS
1133 attacks by numerous packets turning the header on and off.
acm: does this mean
The *presence or omission of*
PDM MUST NOT be changed dynamically via packet flow as...