As I was unable to find this email in my inbox (not even in spam) and in the 
absence of replies from the authors, I am resending to all recipients as I fear 
a technical problem with the IETF/RPC mail system.

Let's try to publish this RFC in 2025 😉

Regards

-éric

On 25/11/2025, 01:56, "[email protected]" <[email protected]> 
wrote:

Authors,

While reviewing this document during AUTH48 
(https://www.rfc-editor.org/authors/rfc9915.html and other formats), please 
resolve the following questions, which are also in the source file.

1) <!--[rfced] In the abstract, should "reported errata" be "verified errata
reports" for accuracy? In the RFC errata system, "Reported" is the status
name for errata that have not yet been reviewed (see 
https://www.rfc-editor.org/errata-definitions/).
In addition, we suggest splitting the sentence as follows.

Original:
   This document obsoletes RFC8415 to incorporate reported errata and
   to obsolete the assignment of temporary addresses (the IA_TA option)
   and the server unicast capability (the Server Unicast option and
   UseMulticast status code).

Perhaps:
   This document obsoletes RFC 8415. It incorporates reported errata and
   obsoletes the assignment of temporary addresses (the IA_TA option)
   and the server unicast capability (the Server Unicast option and
   UseMulticast status code).

Similarly, in Section 1.1, should "all applicable errata" be
"verified errata reports"?

Original:
   This document obsoletes [RFC8415] by applying all applicable errata
   and obsoleting two features that have not been widely implemented -
   the assignment of temporary addresses using the IA_TA option and
   allowing clients to unicast some messages directly to the server if
   the server sent the Server Unicast option to a client in an early
   exchange.

Perhaps:
   This document obsoletes [RFC8415]. It applies verified errata reports
   and obsoletes two features that have not been widely implemented -
   the assignment of temporary addresses using the IA_TA option and
   allowing clients to unicast some messages directly to the server if
   the server sent the Server Unicast option to a client in an early
   exchange.
-->


2) <!--[rfced] Please clarify this sentence. If the suggestion doesn't
correctly capture your intent, please let us know how we can rephrase.

Original:
   Note that these documents use "requesting router" for what this
   document uses client and "delegating router" for server.

Perhaps:
  Note that those documents use "requesting router" and "delegating
  router" where this document uses "client" and "server", respectively.
-->


3) <!--[rfced] Is this a list of 2 or 3 items (i.e., is it lifetime hints
and timer hints?)?

Original:
It also obsoleted a small number of mechanisms: delayed
authentication, lifetime and timer hints sent by a client.

Perhaps:
It also obsoleted a small number of mechanisms: delayed
authentication, lifetime, and timer hints sent by a client.
-->


4) <!-- [rfced] The following citation may require clarification:

Current:
   A DHCP option that is usually only contained in another option. For
   example, the IA Address option is contained in IA_NA options (see
   Section 21.5). See Section 9 of [RFC7227] for a more complete
   definition.

Section 21.5 is about the "IA_TA" option, rather than the "IA_NA"
option. Note: Section 21.6 is about the "IA Address Option".
-->


5) <!--[rfced] It may be useful to further clarify the reach of this BCP 14
keyword (i.e., are both clauses RECOMMENDED?).

Original:
   It is RECOMMENDED for clients to send messages from UDP source port
   546, and servers and relay agents from UDP source port 547.

Perhaps:
   It is RECOMMENDED for clients to send messages from UDP source port
   546 and for servers and relay agents from UDP source port 547.
-->


6) <!--[rfced] Does the following rephrase correctly capture your intent?

Original:
   When a client received a configuration option in an earlier Reply and
   then sends a Renew, Rebind, or Information-request and the requested
   option is not present in the Reply, the client SHOULD stop using the
   previously received configuration information.

Perhaps:
   If a client received a configuration option in an earlier Reply, when
   it later sends a Renew, Rebind, or Information-request, the requested
   option needs to be present in the next Reply; otherwise, the client SHOULD
   stop using the previously received configuration information.
-->


7) <!--[rfced] The phrasing of "not associated with a detection of having
moved" is a bit tough to get through.  Also, it may be easier on
the reader if this sentence did not have two "if" clauses.  If
our suggested rephrasing does not capture your intent, please
rephrase.

Original:
If not associated with a detection of having moved to a new link, a
client SHOULD initiate one of the Renew/Reply, Confirm/Reply or
Information-request/Reply exchanges, if the client detects a
significant change regarding the prefixes available on the link.

Perhaps:
A client not detected as having moved to a new link SHOULD initiate
one of the Renew/Reply, Confirm/Reply or Information-request/Reply
exchanges, if the client detects a significant change regarding the
prefixes available on the link.
-->


8) <!--[rfced] Please review our updates to the following text for
readability.  Note that this updated text includes a repeat of a
BCP 14 keyword.

Original:
   Whenever a client restarts the DHCP server discovery process or
   selects an alternate server as described in Section 18.2.9, the
   client SHOULD stop using any addresses and delegated prefixes for
   which it has bindings (see Section 18.2.7) and if possible, any
   previously received other configuration information, and try to
   obtain new bindings and other configuration information from a "new"
   server for the same interface.

Current:
   Whenever a client restarts the DHCP server discovery process or
   selects an alternate server as described in Section 18.2.9, the
   client SHOULD stop using any addresses and delegated prefixes for
   which it has bindings (see Section 18.2.7) and, if possible, any
   other configuration information it previously received.  The client
   SHOULD also try to obtain new bindings and other configuration
   information from a "new" server for the same interface.
-->


9) <!--[rfced] Please review: Should "null-terminated" should be
"NUL-terminated" if it is referring to the NUL character (which
is mentioned in RFC 3629)?

Original:
   status-message          A UTF-8 encoded [RFC3629] text string
                           suitable for display to an end user.
                           MUST NOT be null-terminated.  A variable-
                           length field (2 octets less than the value in
                           the option-len field).
-->


10) <!--[rfced] Please note that we have updated "sub-option-len" to
"suboption-len" in the following to match both Figure 29 and the
updates to other instances made in Section 21.17.  Please let us
know any objections.

Original:
The data area for the suboption.  The length, in octets, is specified
by sub-option-len.

Current:
The data area for the suboption.  The length, in octets, is specified
by suboption-len.
-->


11) <!-- [rfced] This IEEE Std was superseded by a new version in 2020
https://ieeexplore.ieee.org/document/9018454.

We will update to point to the newer version unless we hear an objection.

Original:
   [IEEE-802.1x]
              IEEE, "IEEE Standard for Local and metropolitan area
              networks-Port-Based Network Access Control", IEEE 802.1X-
              2010, DOI 10.1109/IEEESTD.2010.5409813,
              <https://ieeexplore.ieee.org/servlet/
              opac?punumber=5409757>.
-->


12) <!--[rfced] We had the following questions/comments about abbreviation
use throughout the document:

a) FYI - We have added expansions for abbreviations upon first use per
Section 3.6 of RFC 7322 ("RFC Style Guide"). Please review each
expansion in the document carefully to ensure correctness.


b) Should CPE be expanded as Customer Premises Equipment here?

Original:
   The prefix delegation process begins
   when the client (CPE) requests configuration information through DHCP.


Perhaps:
  The prefix delegation process begins
  when the client (or Customer Premises Equipment (CPE)) requests
  configuration information through DHCP.
-->


13) <!-- [rfced] Some tables and figures in this document do not have
titles.  Please review and provide titles for these, if desired.
-->


14) <!-- [rfced] Please review whether any of the notes in this document
should be in the <aside> element. It is defined as "a container
for content that is semantically less important or tangential to
the content that surrounds it"
(https://authors.ietf.org/en/rfcxml-vocabulary#aside).
-->


15) <!-- [rfced] Please review the "Inclusive Language" portion of the
online Style Guide
<https://www.rfc-editor.org/styleguide/part2/#inclusive_language>
and let us know if any changes are needed.  Updates of this
nature typically result in more precise language, which is
helpful for readers.

For example, please consider whether the following should be updated:

man-in-the-middle
-->


Thank you.

Megan Ferguson and Alice Russo
RFC Production Center


On Nov 24, 2025, [email protected]<mailto:[email protected]> 
wrote:

*****IMPORTANT*****

Updated 2025/11/24

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--------------------------------------
RFC9915 (draft-ietf-dhc-rfc8415bis-12)

Title            : Dynamic Host Configuration Protocol for IPv6 (DHCPv6)
Author(s)        : T. Mrugalski, B. Volz, M. Richardson, S. Jiang, T. Winters
WG Chair(s)      : Timothy Winters, Bernie Volz
Area Director(s) : Erik Kline, Éric Vyncke



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