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no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-idr.ietf.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: 'idr-chairs' X-Mailman-Version: 3.3.9rc6 Precedence: list Subject: =?utf-8?q?=5BIdr=5D_Re=3A_WG_last_call_and_IPR_call_for_draft-ietf-idr-rt-de?= =?utf-8?q?rived-community_=28December_11=2C_2025_to_January_5=2C_2026=29?= List-Id: Inter-Domain Routing Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: --_000_MW4PR84MB300314ED96B006BF44AD69AEF4ADAMW4PR84MB3003NAMP_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi Stephane, Thanks for your review and comments. I've made some changes in my local sou= rce file. Please see zzh> below. From: slitkows.ietf@gmail.com Sent: Monday, December 15, 2025 4:42 AM To: 'Dongjie (Jimmy)' ; 'idr' Cc: 'idr-chairs' Subject: [Idr] Re: WG last call and IPR call for draft-ietf-idr-rt-derived-= community (December 11, 2025 to January 5, 2026) HI Jie, Few comments: Section 3: * Two typos: s/Subt-Types/Sub-Types/g Zzh> Thanks! Fixed. Section 4: * The fact that we consider the type being the first byte for most of t= he ext comms expect for IPv6 ones where we consider the two first bytes is = really confusing (subtype is within type). I know that it's following how i= t's defined at IANA, but this is really creating confusion while RFC5701 st= ill needs "subtype" field properly. Maybe at least for the example given ab= out Type 0x0011, we could mention that we talk about sub-type 0x11 used for= RT vs the general 0x02. Otherwise, we try to compare things that are not d= irectly comparable. * "When a new type is defined and registered, the corresponding...", it= 's not clear what we are talking about, I guess we talk about new types of = RT derived EC. The entire paragraph does not sound super clear to me. Can w= e simplify ? Previous paragraph says that we cannot guarantee subtype 0x02 = for any new RT created, then we can say that similarly we cannot guarantee = that new RT derived ECs, will get sub-type 0x15. BTW, wouldn't it be someth= ing we would like to enforce to simplify operation/understanding ? (so sub-= type 0x02 is always RT, 0x15 always for RT-derived EC) Zzh> Indeed, it would be nice if we could enforce 0x02 for RT and 0x15 for = RT-derived, but my understanding is that we can't - I'll defer this to the = IDR experts. Zzh> I deleted the entire paragraph and added some texts to the previous an= d next paragraph to address the two comments: While it may be desired to follow the unwritten convention and assign sub-type 0x02 for future Route Targets of future types of ECs, there is no guarantee of that. For example, Type 0x0011 (which can be interpreted as with a sub-type 0x11) is assigned for UUID-based Route Target that imposes as an IPv6 Address Specific EC (even though UUID is not an IPv6 address). When a new type of extended community is defined and registered, and a sub-type under this new type is registered for Route Target purposes, it is suggested to also register a sub-type for derivation purposes, preferably with the same value 0x15. However, there is no guarantee of that either. Section 6 (Security): I agree that this document is not defining how these ECs are used, however,= as they could potentially influence some indirect behaviors (not defined i= n this document), it should be good to mention that user should pay attenti= on to stripping unintended received ECs from external peers. Zzh> How about adding a sentence to the paragraph? ... Any potential security concerns need be addressed by documents that specify the actual usage. Additionally, in general one should pay attention to stripping unintended received ECs from external peers. Thanks! Jeffrey From: Dongjie (Jimmy) > Sent: Thursday, December 11, 2025 2:35 AM To: idr > Cc: idr-chairs > Subject: [Idr] WG last call and IPR call for draft-ietf-idr-rt-derived-comm= unity (December 11, 2025 to January 5, 2026) This begins the working group last call for the draft on "Extended Communit= ies Derived from Route Targets": https://datatracker.ietf.org/doc/draft-iet= f-idr-rt-derived-community/ Due to the holiday season in the end of the year, this last call ends on Ja= nuary 5th, 2026 so as to give the working group time to review and comment. For purposes of the shepherd's report and according to IETF BCP 78/79, the = authors are requested to declare whether they are aware of any undisclosed = IPR covering this draft. Members of the working group are similarly obligat= ed to report any IPR they are aware of as well. Best regards, Jie (as WG secretary & document shepherd) --_000_MW4PR84MB300314ED96B006BF44AD69AEF4ADAMW4PR84MB3003NAMP_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi Stephane,

 

Thanks for your review and comments. I’v= e made some changes in my local source file.

 

Please see zzh> below.

 

From: s= litkows.ietf@gmail.com <slitkows.ietf@gmail.com>
Sent: Monday, December 15, 2025 4:42 AM
To: 'Dongjie (Jimmy)' <jie.dong@huawei.com>; 'idr' <idr@iet= f.org>
Cc: 'idr-chairs' <idr-chairs@ietf.org>
Subject: [Idr] Re: WG last call and IPR call for draft-ietf-idr-rt-d= erived-community (December 11, 2025 to January 5, 2026)

 

HI Jie,

 

Few comments:

 

Section 3:

  • Two typos: s/Subt-Types/Sub-Types/g

 

Zzh> Thanks! Fixed.


Section 4:

  • The fact that we consider the type being the first byte for most of th= e ext comms expect for IPv6 ones where we consider the two first bytes is really confusing (subtype is within type). I know t= hat it’s following how it’s defined at IANA, but this is really= creating confusion while RFC5701 still needs “subtype” field p= roperly. Maybe at least for the example given about Type 0x0011, we could mention that we talk about sub-type 0x11 used for RT vs t= he general 0x02. Otherwise, we try to compare things that are not directly = comparable.

 

  • “When a new type is defined and registered, the corresponding= 230;”, it’s not clear what we are talking about, I guess we talk about new types of RT derived EC. The entire paragraph does not sound= super clear to me. Can we simplify ? Previous paragraph says that we canno= t guarantee subtype 0x02 for any new RT created, then we can say that simil= arly we cannot guarantee that new RT derived ECs, will get sub-type 0x15. BTW, wouldn’t it be somethin= g we would like to enforce to simplify operation/understanding ? (so sub-ty= pe 0x02 is always RT, 0x15 always for RT-derived EC)
    • =

 

Zzh> Indee= d, it would be nice if we could enforce 0x02 for RT and 0x15 for RT-derived, but my understanding is that we can’t – I̵= 7;ll defer this to the IDR experts.

Zzh> I del= eted the entire paragraph and added some texts to the previous and next paragraph to address the two comments:

 

 =   While it may be desired to follow the unwritten convention and assig= n

 =   sub-type 0x02 for future Route Targets of future types of ECs, there=

 =   is no guarantee of that.  For example, Type 0x0011 (which c= an be

   interpreted as with a sub-type 0x11) is assigned for UU= ID-based Route

 =   Target that imposes as an IPv6 Address Specific EC (even though UUID=

 =   is not an IPv6 address).

 

 =   When a new type of extended community is defined and registered, and=

 =   a sub-type under this new type is registered for Route Target

 =   purposes, it is suggested to also register a sub-type for derivation=

 =   purposes, preferably with the same value 0x15.  However, there is no

       &nb= sp;         guarantee = of that either.

 

Section 6 (Security):

I agree that this document is not defining how these = ECs are used, however, as they could potentially influence some indirect be= haviors (not defined in this document), it should be good to mention that user should pay attention to stripping unintended = received ECs from external peers.

 

Zzh> How about adding a sentence to the paragraph?=

 

   … Any potential = security concerns need

   be addressed by documents that specify the actual usage.<= /span>

   Additionally, in general one should pay at= tention to stripping

&nb= sp;  unintended received ECs from external peers.

 

Thanks!

Jeffrey

 

From: = Dongjie (Jimmy) <jie.dong=3D40huawei.com@dmarc.ietf.org>
Sent: Thursday, December 11, 2025 2:35 = AM
To: idr <idr@ietf.org>
Cc: idr-chairs <idr-chairs= @ietf.org>
Subject: [Idr] WG last call and IPR call for draft-ietf-idr-rt-deriv= ed-community (December 11, 2025 to January 5, 2026)

 

This begins the working group last call for the draf= t on “Extended Communities Derived from Route Targets”: https://datatracker.ietf.org/doc/draft-ietf-idr-rt-derived-community/

 

Due to the holiday season in the end of the year, th= is last call ends on January 5th, 2026 so as to give the working= group time to review and comment.

 

For purposes of the shepherd's report and according = to IETF BCP 78/79, the authors are requested to declare whether they are aw= are of any undisclosed IPR covering this draft. Members of the working grou= p are similarly obligated to report any IPR they are aware of as well.

 

Best regards,

Jie (as WG secretary & document shepherd)

 

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