Hi all,

Thanks, Tim.

@Alice, you have my approval to insert the text. Thank you.

Cheers,
Med

De : Timothy Winters <t...@qacafe.com>
Envoyé : mercredi 23 juillet 2025 08:43
À : BOUCADAIR Mohamed INNOV/NET <mohamed.boucad...@orange.com>
Cc : Alice Russo <aru...@staff.rfc-editor.org>; v6ops-...@ietf.org; 
v6ops-cha...@ietf.org; rbon...@juniper.net; auth48archive 
<auth48archive@rfc-editor.org>; RFC Editor <rfc-edi...@rfc-editor.org>
Objet : Re: [AD] Re: AUTH48: RFC-to-be 9818 <draft-ietf-v6ops-cpe-lan-pd-09> 
for your review


Hi Med and Alice,

Thanks, yes I think Meds addition is an improvement.  Do I need to make that 
change in the xml?

Alice, I will drop by Thursday morning to say hi!

~Tim

On Tue, Jul 22, 2025 at 5:51 PM 
<mohamed.boucad...@orange.com<mailto:mohamed.boucad...@orange.com>> wrote:
Hi Alice, Tim, all,

I'm afraid that the new text may be conflicting when the following default is 
disabled:

   LPD-6:   By default, the IPv6 CE router filtering rules MUST allow
            forwarding of packets with an outer IPv6 header containing a
            source address belonging to delegated prefixes, along with
            reciprocal packets from the same flow, following the
            recommendations of [RFC6092].

Tim, I guess that you wanted to cover forwarding independent of the if. If 
that's what you have in mind, maybe it is better to consider the following:

NEW:
           Absent explicit filtering, packets with destination
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
           addresses in a delegated prefix MUST be forwarded to that
                                                   ^^^^^^^^^^
           prefix regardless of which interface they are received on.

Also fixed a nit as this is about forwarding, not routing.

Cheers,
Med

> -----Message d'origine-----
> De : Alice Russo 
> <aru...@staff.rfc-editor.org<mailto:aru...@staff.rfc-editor.org>>
> Envoyé : mardi 22 juillet 2025 17:23
> À : Timothy Winters <t...@qacafe.com<mailto:t...@qacafe.com>>; BOUCADAIR 
> Mohamed INNOV/NET
> <mohamed.boucad...@orange.com<mailto:mohamed.boucad...@orange.com>>
> Cc : v6ops-...@ietf.org<mailto:v6ops-...@ietf.org>; 
> v6ops-cha...@ietf.org<mailto:v6ops-cha...@ietf.org>; 
> rbon...@juniper.net<mailto:rbon...@juniper.net>;
> auth48archive 
> <auth48archive@rfc-editor.org<mailto:auth48archive@rfc-editor.org>>; RFC 
> Editor <rfc-
> edi...@rfc-editor.org<mailto:edi...@rfc-editor.org>>
> Objet : [AD] Re: AUTH48: RFC-to-be 9818 <draft-ietf-v6ops-cpe-lan-
> pd-09> for your review
>
>
> Tim, Med (as AD),
>
> ** Med, please review and let us know if you approve the following
> sentence, which Tim added to LPD-5. (This addition is also shown in
> the diff files below.)
>
>             Packets with destination
>             addresses in a delegated prefix MUST be routed to that
>             prefix regardless of which interface they are received
> on.
>
> In context, it is:
>
>    LPD-5:   IPv6 CE routers MUST maintain a local routing table that
> is
>             dynamically updated with leases and the associated next
> hops
>             as they are delegated to clients.  Packets with
> destination
>             addresses in a delegated prefix MUST be routed to that
>             prefix regardless of which interface they are received
> on.
>             When a delegated prefix is released or expires, the
>             associated route MUST be removed from the IPv6 CE
> router's
>             routing table.  A delegated prefix expires when the
> valid
>             lifetime assigned in the IA_PD expires without being
>             renewed.  When a prefix is released or expires, it MUST
> be
>             returned the pool of available prefixes.
>
> Tim,
> Thank you for your reply and the updated XML file. One note is
> below. The revised files are here (please refresh):
>
> https://fra01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fww<https://ww/>
> w.rfc-
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> w.rfc-
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> https://fra01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fww<https://ww/>
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>
> This diff file shows all changes from the approved I-D:
>
> https://fra01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fww<https://ww/>
> w.rfc-editor.org<http://w.rfc-editor.org/>%2Fauthors%2Frfc9818-
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>
> This diff file shows the changes made during AUTH48 thus far:
>
> https://fra01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fww<https://ww/>
> w.rfc-editor.org<http://w.rfc-editor.org/>%2Fauthors%2Frfc9818-
> auth48diff.html&data=05%7C02%7Cmohamed.boucadair%40orange.com<http://40orange.com/>%7Cdf4a
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> auth48rfcdiff.html&data=05%7C02%7Cmohamed.boucadair%40orange.com<http://40orange.com/>%7Cd
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>
> We will wait to hear from you again and from your coauthors before
> continuing the publication process. This page shows the AUTH48
> status of your document:
>
> https://fra01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fww<https://ww/>
> w.rfc-
> editor.org<http://editor.org/>%2Fauth48%2Frfc9818&data=05%7C02%7Cmohamed.boucadair%40ora
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> pE10DYF8yjS9UOLlzg%3D&reserved=0
>
> FYI, in Section 1, added 's' as shown below; please let us know if
> that is not the intended meaning.
>
> OLD: The default configuration of CE router is designed to be a
>      flat model to support zero-configuration networking.
>
> NEW: The default configuration of CE routers is designed to be a
>      flat model to support zero-configuration networking.
>
>
> I'm here at IETF 123 at the RFC Editor desk (near registration) if
> you want to come by and say hello. Will also be here Wed. afternoon
> and Thur. morning.
>
> Thank you.
> RFC Editor/ar
>
> > On Jul 22, 2025, at 10:51 AM, Timothy Winters 
> > <t...@qacafe.com<mailto:t...@qacafe.com>>
> wrote:
> >
> > Hi Alice,
> >
> > Here is the updated xml file, I responded to all the questions in
> the xml.  Let me know if there are unresolved issues.
> >
> > ~Tim
> >
> >
> >
> >
> > On Mon, Jul 21, 2025 at 4:15 PM Timothy Winters 
> > <t...@qacafe.com<mailto:t...@qacafe.com>>
> wrote:
> > Hi Alice,
> >
> > Thanks I have started reviewing the changes and will have an
> update this week.
> >
> > ~Tim
> >
> > On Mon, Jul 21, 2025 at 3:16 PM Alice Russo <aru...@staff.rfc-
<mailto:aru...@staff.rfc-%0b>> editor.org<http://editor.org/>> wrote:
> > Tim,
> >
> > This is a reminder that we await word from you regarding the
> questions below and this document's readiness for publication as an
> RFC. The files are here:
> >
> >
> >
> https://fra01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fww<https://ww/>
> w.
> > rfc-
> editor.org<http://editor.org/>%2Fauthors%2Frfc9818.html&data=05%7C02%7Cmohamed.boucada
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> >
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> >
> > Diff files of all changes from the approved Internet-Draft:
> >
> >
> https://fra01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fww<https://ww/>
> w.
> > rfc-editor.org<http://rfc-editor.org/>%2Fauthors%2Frfc9818-
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> >
> > This page shows the AUTH48 status of your document:
> >
> >
> https://fra01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fww<https://ww/>
> w.
> > rfc-
> editor.org<http://editor.org/>%2Fauth48%2Frfc9818&data=05%7C02%7Cmohamed.boucadair%40o
> >
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> >
> > Thank you.
> > RFC Editor/ar
> >
> > > On Jul 3, 2025, at 5:51 PM, 
> > > rfc-edi...@rfc-editor.org<mailto:rfc-edi...@rfc-editor.org> wrote:
> > >
> > > Greetings,
> > >
> > > While reviewing this document during AUTH48
> (https://fra01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fw<https://w/>
> ww.rfc-
> editor.org<http://editor.org/>%2Fauthors%2Frfc9818.html&data=05%7C02%7Cmohamed.boucadair
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> %2FjotDJ6OX%2FlLBFd7qu7g%3D&reserved=0 and other formats), please
> resolve the following questions, which are also in the XML file.
> > >
> > > 1) <!-- [rfced] How may this title be rephrased for clarity?
> > > Also, is "LAN" needed in this title? (Neither "LAN" nor "local"
> is
> > > mentioned in the abstract.) Do either of these options convey
> the intended meaning?
> > > Please feel free to suggest otherwise.
> > >
> > > Original:
> > > IPv6 CE Routers LAN DHCPv6 Prefix Delegation
> > >
> > > Current:
> > > IPv6 Customer Edge (CE) Routers LAN DHCPv6 Prefix Delegation
> > >
> > > Option A:
> > > DHCPv6 Prefix Delegation on IPv6 Customer Edge (CE) Routers in
> LANs
> > >
> > > Option B:
> > > DHCPv6 Prefix Delegation in LANs for IPv6 Customer Edge (CE)
> Routers
> > > -->
> > >
> > >
> > > 2) <!--[rfced] For clarity, how may this be rephrased? In
> > > particular, the phrase "CE Router supporting prefix delegation"
> is unclear.
> > >
> > > Original:
> > >  The default configuration of CE Router supporting  prefix
> > > delegation is designed to be a flat model to support zero
> > > configuration networking.
> > >
> > > Perhaps:
> > >  For prefix delegation that supports CE routers, the default
> > > configuration is designed to be a flat model to support
> > > zero-configuration networking.
> > >
> > > Or simply:
> > >  For prefix delegation that supports CE routers, the default
> > > configuration is a flat model to support zero-configuration
> > > networking.
> > > -->
> > >
> > >
> > > 3) <!--[rfced] Please clarify "multi-provisioned networks". Is
> there
> > > another term that is more common? The term "multi-provisioned"
> > > does not appear in past RFCs or current Internet-Drafts.
> > >
> > > Original:
> > >  This document does not cover dealing with multi-provisioned
> > > networks  with more than one provider.
> > > -->
> > >
> > >
> > > 4) <!--[rfced] Which update do you prefer, as this definition is
> > > missing 'the', but perhaps you prefer to match the cited
> document?
> > >
> > > Original:  IPv6 node: A device that implements IPv6 protocol.
> > >
> > > Option A:  IPv6 node: A device that implements IPv6.
> > >  (to match RFC 8200, which is cited in the lead-in text)
> > >
> > > Option B:  IPv6 node: A device that implements the IPv6
> protocol.
> > > -->
> > >
> > >
> > > 5) <!-- [rfced] FYI, for expanding GUA, "Unique" has been
> changed to
> > > "Unicast" in order to match RFC 4291. Please review.
> > >
> > > Original:
> > >  *  GUA:Global Unique Addresses, as defined in [RFC4291].
> > >
> > > Current:
> > >  GUA:  Global Unicast Address, as defined in [RFC4291].
> > > -->
> > >
> > >
> > > 6) <!--[rfced] Please clarify; how should this fragment be
> updated
> > > to be a sentence?
> > >
> > > Original:
> > >  The end-user network for IPv6 that is a stub network.
> > > -->
> > >
> > >
> > > 7) <!--[rfced] Please review this update for accuracy; due to
> "its",
> > > the subject ("IPv6 CE routers") has been changed to singular. It
> > > currently reads that a single router could have more than one
> LAN interface.
> > >
> > > Original:
> > >  LPD-1:   IPv6 CE routers MUST support IPv6 prefix assignment
> > >           according to Section 13.3 of [RFC8415] (Identity
> Association
> > >           for Prefix Delegation (IA_PD) option) on its LAN
> > >           interface(s).
> > >
> > > Current:
> > >  LPD-1:   Each IPv6 CE router MUST support IPv6 prefix
> assignment
> > >           according to Section 13.3 of [RFC8415] (Identity
> Association
> > >           for Prefix Delegation (IA_PD) option) on its LAN
> > >           interface(s).
> > >
> > > Alternatively (both plural):
> > >  LPD-1:   IPv6 CE routers MUST support IPv6 prefix assignment
> > >           according to Section 13.3 of [RFC8415] (Identity
> Association
> > >           for Prefix Delegation (IA_PD) option) on their LAN
> > >           interfaces.
> > > -->
> > >
> > >
> > > 8) <!--[rfced] Because the second sentence is singular, should
> the
> > > first sentence be parallel?
> > >
> > > Original:
> > >  LPD-2:   IPv6 CE routers MUST assign a prefix from the
> delegated
> > >           prefix as specified by L-2 in Section 4.3 of
> [RFC7084].  If
> > >           insufficient prefixes are available the IPv6 CE Router
> MUST
> > >           log a system management error.
> > >
> > > Perhaps:
> > >  LPD-2:   Each IPv6 CE router MUST assign a prefix from the
> delegated
> > >           prefix as specified by L-2 in Section 4.3 of
> [RFC7084].  If
> > >           insufficient prefixes are available, the IPv6 CE
> router MUST
> > >           log a system management error.
> > > -->
> > >
> > >
> > > 9) <!--[rfced] Should "both ULA and GUA" be both "ULAs and
> GUAs"? If
> > > so, please review whether "the GUA" is accurate in the second
> phrase.
> > >
> > > Original:
> > >  LPD-9:   If an IPv6 CE router is provisioning both ULA and GUA
> via
> > >           prefix delegation, the GUA SHOULD appear first in the
> DHCPv6
> > >           packets.
> > >
> > > Perhaps:
> > >  LPD-9:   If an IPv6 CE router is provisioning both ULAs and
> GUAs via
> > >           prefix delegation, the GUA SHOULD appear first in the
> DHCPv6
> > >           packets.
> > >
> > > Or (singular):
> > >  LPD-9:   If an IPv6 CE router is provisioning both the ULA and
> the GUA via
> > >           prefix delegation, the GUA SHOULD appear first in the
> DHCPv6
> > >           packets.
> > > -->
> > >
> > >
> > > 10) <!--[rfced] Terminology
> > >
> > > a) This term appeared inconsistently and has been updated to the
> latter.
> > > Please let us know if you prefer otherwise.
> > >
> > >  CE Router vs. CE router   [based on usage in RFC 7084]
> > >
> > > b) Capitalization of these terms is not consistent. Please let
> us
> > > know your preference.
> > >
> > >  Prefix Delegation vs. prefix delegation
> > >
> > >  Delegated Prefix (in LPD-6) vs. delegated prefix (in LPD-2,
> LPD-5)
> > >
> > > c) Please review usage of this term and let us know if any
> updates are needed.
> > > We note RFC 8415 uses the hyphen for the "prefix-length" field.
> > >
> > >  prefix-length (3 instances) vs. prefix length (2 instances)
> > > -->
> > >
> > >
> > > 11) <!-- [rfced] FYI, the original URL provided for [eRouter] is
> to
> > > the most recent version of this CableLabs specification, Version
> > > I22, which was published in May 2024, so we updated the
> reference as follows.
> > >
> > > Original:
> > >  [eRouter]  CableLabs, "IPv4 and IPv6 eRouter Specification
> Version
> > >             I21", February 2022,
> > >
> <https://fra01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fw<https://w/>
> ww.cablelabs.com<http://ww.cablelabs.com/>%2Fspecifications%2FCM-SP-
> eRouter&data=05%7C02%7Cmohamed.boucadair%40orange.com<http://40orange.com/>%7Cdf4acf16205f
> 4e496afa08ddc933a2a7%7C90c7a20af34b40bfbc48b9253b6f5d20%7C0%7C0%7C63
> 8887945782163947%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlY
> iOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C
> 0%7C%7C%7C&sdata=XaNipH6wM%2FsVGIZg0UZLCyeameGXXKgnaB5HVxiBMyM%3D&re
> served=0>.
> > >
> > > Current:
> > >  [eRouter]  CableLabs, "IPv4 and IPv6 eRouter Specification",
> Data-
> > >             Over-Cable Service Interface Specifications, Version
> I22,
> > >             May 2024,
> > >
> <https://fra01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fw<https://w/>
> ww.cablelabs.com<http://ww.cablelabs.com/>%2Fspecifications%2FCM-SP-
> eRouter&data=05%7C02%7Cmohamed.boucadair%40orange.com<http://40orange.com/>%7Cdf4acf16205f
> 4e496afa08ddc933a2a7%7C90c7a20af34b40bfbc48b9253b6f5d20%7C0%7C0%7C63
> 8887945782185062%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlY
> iOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C
> 0%7C%7C%7C&sdata=mnpN8EcujQHWO4T4Cl%2FYps%2BKbnKdCQlEti%2FYAa4iI38%3
> D&reserved=0>.
> > >
> > > Re: "in Section 8.5 of CableLabs IPv6 eRouter specification
> > > [eRouter]", we note that Section 8.5 has the same title in I21
> and I122.
> > > However, if you prefer to reference Version I21, please let us
> know
> > > (and in that case, we recommend this URL:
> > >
> https://fra01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fww<https://ww/>
> w.cablelabs.com<http://w.cablelabs.com/>%2Fspecifications%2FCM-SP-
> eRouter%3Fv%3DI21&data=05%7C02%7Cmohamed.boucadair%40orange.com<http://40orange.com/>%7Cdf
> 4acf16205f4e496afa08ddc933a2a7%7C90c7a20af34b40bfbc48b9253b6f5d20%7C
> 0%7C0%7C638887945782206601%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiO
> nRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyf
> Q%3D%3D%7C0%7C%7C%7C&sdata=h4hLrAgXFhEVVB%2FGYhIUYUqXp5JaIpTd4BPmEuv
> KeZQ%3D&reserved=0).
> > > -->
> > >
> > >
> > > Thank you.
> > >
> > > RFC Editor/ar
> > >
> >
> >
> > > On Jul 3, 2025, at 6:01 PM, 
> > > rfc-edi...@rfc-editor.org<mailto:rfc-edi...@rfc-editor.org> wrote:
> > >
> > > Tim,
> > >
> > > One additional question:
> > >
> > > 12) Re: LPD-6, what does "that is not assigned" refer to? As far
> as verb agreement, it does not match "packets".
> > >
> > > Original:
> > > IPv6 CE routers MUST continue to drop packets including
> destination
> > > address that is not assigned to the LAN or delegated.
> > >
> > > Perhaps:
> > > IPv6 CE routers MUST continue to drop packets, including
> destination
> > > address, that are not assigned to the LAN or delegated.
> > >
> > > Thank you.
> > > RFC Editor/ar
> >
> >
> >
> > <rfc9818.xml>

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