From nobody Thu Oct 1 08:40:08 2020 Return-Path: X-Original-To: roll@ietfa.amsl.com Delivered-To: roll@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 5BD563A0AC3; Thu, 1 Oct 2020 08:39:56 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.899 X-Spam-Level: X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id QY5TP0SkZbkR; Thu, 1 Oct 2020 08:39:54 -0700 (PDT) Received: from tuna.sandelman.ca (tuna.sandelman.ca [IPv6:2607:f0b0:f:3:216:3eff:fe7c:d1f3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 9D6193A0A7E; Thu, 1 Oct 2020 08:39:53 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by tuna.sandelman.ca (Postfix) with ESMTP id 70269389F2; Thu, 1 Oct 2020 11:44:52 -0400 (EDT) Received: from tuna.sandelman.ca ([127.0.0.1]) by localhost (localhost [127.0.0.1]) (amavisd-new, port 10024) with LMTP id pcz7zyOwSzix; Thu, 1 Oct 2020 11:44:51 -0400 (EDT) Received: from sandelman.ca (obiwan.sandelman.ca [IPv6:2607:f0b0:f:2::247]) by tuna.sandelman.ca (Postfix) with ESMTP id B8D20389F1; Thu, 1 Oct 2020 11:44:51 -0400 (EDT) Received: from localhost (localhost [IPv6:::1]) by sandelman.ca (Postfix) with ESMTP id 045DB4CC; Thu, 1 Oct 2020 11:39:51 -0400 (EDT) From: Michael Richardson To: man <6man@ietf.org> reply-to: man <6man@ietf.org> cc: homenet@ietf.org, roll@ietf.org X-Attribution: mcr X-Mailer: MH-E 8.6+git; nmh 1.7+dev; GNU Emacs 26.1 X-Face: $\n1pF)h^`}$H>Hk{L"x@)JS7<%Az}5RyS@k9X%29-lHB$Ti.V>2bi.~ehC0; <'$9xN5Ub# z!G,p`nR&p7Fz@^UXIn156S8.~^@MJ*mMsD7=QFeq%AL4m Archived-At: Subject: [Roll] draft-thubert-6man-ipv6-over-wireless-06.html -- only you can help stamp out low-speed broadcasts X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 01 Oct 2020 15:39:57 -0000 --=-=-= Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable I hope the reply-to: 6man@ietf.org might survive, but I ask you to verify when you Reply-All that it goes to that list only. In https://www.ietf.org/id/draft-thubert-6man-ipv6-over-wireless-06.html Pascal Thubert provides a well written survey explanation of the challenges of ND across a wide variety of mesh-under network topologies. Normally, I think of "mesh-under" to be technologies like 802.15.10, but in reading it realize that the entire pantheon of 802 technologies after 10base5 [Big Yellow Coax Cable-1] and 10base2 [Small Grey Coax Cable-= 2], actually fall into the category of "mesh-under". 35 years of what I like to call "stupid layer-2 tricks". ... They all seemed to make sense at the time (to paraphase Douglas Adams's Arthur Dent). Specifically, they were tricks because IPv4 gave us such pathetic subnet limitations, and broadcast emulation was costing more and more bandwidth. We have extensive broadcast mitigation techniques in IPv6. We use of various multicast groups such that, given we had a [Big-Yellow-Coax-Cable], we can push multicast filters down into hardware a= nd avoid waking that overworked Sun-2 20Mhz 68020 CPU for stupid things. The reality today is that none of that matters: the host registers the multicast groups it cares about with the switch using MLD, we hope the IGMP= v6 snooping works (I have a closet where IPv6 ND is broken, I think because it isn't working, and I can't get in due to lockdown rules to investigate in person. IPv6-LL works, btw...) What I'm trying to say is that the model we have about the physical network has been wrong for 25 to 30 years now. Yet, we continue to design networks as if that model is correct, and the folks over at IEEE continue to try to emulate things. It's a deadly embrace in which neither party has the guts = to point out that whatever clothing the emperor thinks they are wearing are not in fact the ones we observe. Now, in homenet we have talked about putting /128s into our visible and debuggable routing protocol, vs putting (to-be-randomized) /48 L2 addresses into the invisible L2 "switching" protocol. The /128 routing was deemed "too complex" by some, who are somehow content = to do exactly the same thing at L2 using hardware implementations that can't be upgraded... ever. We have all sorts of mechanisms to deal with discovery across multiple networks, given that the wired and wifi networks are bridged, yet half the devices can see both at the same time. In ROLL, we have the /128s in the routing protocol, and some profiles have adopted RFC8505, but not all yet. So, we got halfway there, but yet all the way. So, please read Pascal's draft. It sat open in a tab on my desktop for to= o long. It's a very nice and educational survey. I am not quite sure what the actionable item in it is yet. I don't know what 6man should do exactly about it. It's not yet a loud call to action. The draft hints that using RFC8505 more is a good idea, but I'm not sure it actually says this. To my mind, the question is really about deployment. If Cisco enterprise class APs supported RFC8505 would any wifi client devic= es consider supporting it? Is there a killer application that makes it worth it? Maybe in warehouse/logistics situations. I don't know exactly where it might take off. Maybe it can be shown that it helps avoiding dropped packets when roaming among APs within an Enterprise. Is there some other situation? Can routing IPv6 /128s that have mapped IPv4 in them keep all the IPv4 ARP multicast traffic away from the wireless media? [Big Yellow Coax Cable-1] https://en.wikipedia.org/wiki/Vampire_tap#/media/= File:VampireTap.jpg https://en.wikipedia.org/wiki/10BASE5 [Small Grey Coax Cable-2] https://en.wikipedia.org/wiki/10BASE2 =2D- Michael Richardson . o O ( IPv6 I=C3=B8T consulti= ng ) Sandelman Software Works Inc, Ottawa and Worldwide --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCgAdFiEEbsyLEzg/qUTA43uogItw+93Q3WUFAl91+EYACgkQgItw+93Q 3WVaEwf+I5x6V8RSq8L+29pmM9nm0Ly89W8GHD+WJgY7GmD7yG7YTvnGYAt9lBil 8D3+jQMM4gw7BhnuJDO9Vpzskvzd7jb1iAzNQYBW6MTk5oGF0E5IGeOA71QrrDZZ EVkZFCNTHZkZaQap8v78/x9MU1KkE/TCmFikt+b79NAokR++I9ayR9w/czuefih0 lryT2wox6L/MyQMNTnF0euW/kmMpX4CgID7QXr3c3hek/tPX8Rh44MZPA8aM+nnO JoEzZoSlTupkXiYa90O0n5AgKxE/mMnfxWLmVq6GAz3zi4dcNV1oJbO67/nDuXWc VrZZJBcJ2/s6saB2vxg5rxzYhOE0nQ== =2rE7 -----END PGP SIGNATURE----- --=-=-=-- From nobody Thu Oct 1 09:15:18 2020 Return-Path: X-Original-To: roll@ietfa.amsl.com Delivered-To: roll@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 5631B3A0C00; Thu, 1 Oct 2020 09:15:15 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.096 X-Spam-Level: X-Spam-Status: No, score=-2.096 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id a1dmFpp-Z4NO; Thu, 1 Oct 2020 09:15:12 -0700 (PDT) Received: from mail-ed1-x531.google.com (mail-ed1-x531.google.com [IPv6:2a00:1450:4864:20::531]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id B33B23A0B93; Thu, 1 Oct 2020 09:15:11 -0700 (PDT) Received: by mail-ed1-x531.google.com with SMTP id c8so6254975edv.5; Thu, 01 Oct 2020 09:15:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:in-reply-to:references:mime-version:date:message-id:subject:to :cc; bh=vUxCGx35raaNYg50+PTrsAi727THm9woSDsjggcq5TA=; b=dOVvT7TDULu5myrmPat3ib1cN06IyF9eQRaC1v8QrQtQ2jhlGQNXY1HXyuzA/NUBYW kms4zXjqysQaSwR2/4Y2t21uxPUgUiuApazhXS7lmZD+fs4NaeTjreBlWRKNu94BnpZj zU3BGo3U9O3w0lNINYffoZSpYlt3vVSaLsLW5bBRNTOaQxykP/xPCX7dRavwRJloNAre 5117YVgi+fE5Qody9PeGOoBKC23Re6iELoaulQEygh0yp2E/jMgTjzG2d4dQK0Jzymt3 gOTJd4d9TYc4Kj00ZAlfiEPoVjxZTxUwUfp12BzgjVqCoetC8/MlWxfLgHbL0J4GApFO 78IA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:in-reply-to:references:mime-version:date :message-id:subject:to:cc; bh=vUxCGx35raaNYg50+PTrsAi727THm9woSDsjggcq5TA=; b=G0nxDjnVb2VzPvdCGCvV74bmNfvx/uc0ILmdhb0lBZoY+zRcRzDcx0OTUwC1JNPQXl FnTNyanHCPoO15ZuCEleVR/UA6+iqIOwTyec6SBfJMO/nI+u/rAyYFKeP7ZQSXTB13WJ pNQrqJwVCUiMBMDLfFLpRMFtOGUS9O6nF8uxZ8yjBQokDbrdSbmRlIz31uI49UztaNYC MUMQfVhl2s778Xde0GfLgXiwQfUDrZUGZPjybuJ9L1g+AdhoptIz0jLP15aXa/1xA2z7 C+D0UfsEaV1A1vsLZvyNqbkAQfq8ancKsQApVt0/xux0uEBpLxEksHhzNMyUlCSmyWQh n8RA== X-Gm-Message-State: AOAM531BGuixelBH8DApQRN4djqVFaL+5FvlJbrZ9riV/2rkdYjktEeO 6R428GQngSKlcgjGxiT/x+oE3tGVDdQ/vhS69bky1NII X-Google-Smtp-Source: ABdhPJziElJO/YszRR2R2dg3PeYHsxyvhDqku7ScxXNZg8qZwT9gTygE/iFrepyhhjidHBvR4AWHb2NuDAbESRQEjs4= X-Received: by 2002:aa7:dd0d:: with SMTP id i13mr9091421edv.314.1601568909499; Thu, 01 Oct 2020 09:15:09 -0700 (PDT) Received: from 1058052472880 named unknown by gmailapi.google.com with HTTPREST; Thu, 1 Oct 2020 09:15:08 -0700 From: Alvaro Retana In-Reply-To: References: MIME-Version: 1.0 Date: Thu, 1 Oct 2020 09:15:08 -0700 Message-ID: To: "draft-ietf-roll-aodv-rpl@ietf.org" Cc: Ines Robles , roll-chairs@ietf.org, Routing Over Low power and Lossy networks Content-Type: multipart/alternative; boundary="000000000000ef23f405b09e51d9" Archived-At: Subject: Re: [Roll] AD Review of draft-ietf-roll-aodv-rpl-08 X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 01 Oct 2020 16:15:15 -0000 --000000000000ef23f405b09e51d9 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Ping! On June 16, 2020 at 5:36:50 PM, Alvaro Retana (aretana.ietf@gmail.com) wrote: Dear authors: This is an incremental review based on some of the changes and the new text in this version. Some of the comments are a followup to previous comments, but there are also some new issues. Thanks! Alvaro. [Line numbers from idnits.] ... 102 1. Introduction ... 125 AODV-RPL reuses and provides a natural extension to the core RPL 126 functionality to support routes with birectional asymmetric links. 127 It retains RPL's DODAG formation, RPL Instance and the associated 128 Objective Function, trickle timers, and support for storing and non- 129 storing modes. AODV adds basic messages RREQ and RREP as part of RPL 130 DIO (DODAG Information Object) control messages, and does not utilize 131 the DAO message of RPL. AODV-RPL specifies a new MOP running in a 132 seperate instance dedicating to discover P2P routes, which may differ 133 from the P2MP routes discoverable by native RPL. AODV-RPL can be 134 operated whether or not native RPL is running otherwise. [nit] s/seperate instance dedicating/separate instance dedicated [major] "AODV-RPL can be operated whether or not native RPL is running otherwise." If native RPL is also running in the LLN, it can learn the same routes as the ones discovered through AODV-RPL. Which route should have preference, or is this a deployment issue and outside the scope? [major] If native RPL is already running in an LLN, how would AODV-RPL be introduced in the network? I'm thinking about =C2=A72/rfc5706. 136 2. Terminology ... 144 AODV 145 Ad Hoc On-demand Distance Vector Routing[RFC3561]. [nit] s/Routing[RFC3561]/Routing [RFC3561] ... 422 4.3. AODV-RPL Target Option ... 451 Figure 3: Target option format for AODV-RPL MOP [minor] s/Target option/ART Option (or AODV-RPL Target option)/g(almost) There are some places where "target option" is used to refer to the ART option, but without the extra qualification it may be confused with the Target option in core RPL. IOW, let's be painfully specific. ... 485 5. Symmetric and Asymmetric Routes ... 539 Appendix A describes an example method using the ETX and RSSI to 540 estimate whether the link is symmetric in terms of link quality is 541 given in using an averaging technique. [minor] Please expand ETX/RSSI. ... 605 6.2.1. General Processing ... 615 If the S bit in the received RREQ-DIO is set to 1, the router MUST 616 determine whether each direction of the link (by which the RREQ- 617 DIO is received) satisfies the Objective Function. In case that 618 the downward (i.e. towards the TargNode) direction of the link 619 does not satisfy the Objective Function, the link can't be used 620 symmetrically, thus the S bit of the RREQ-DIO to be sent out MUST 621 be set as 0. If the S bit in the received RREQ-DIO is set to 0, 622 the router MUST only check into the upward direction (towards the 623 OrigNode) of the link. [major] s/MUST only check/MUST determine... You fixed the first occurrence of MUST check, but not the second. 625 If the upward direction of the link can satisfy the Objective 626 Function (defined in [RFC6551]), and the router's Rank would not 627 exceed the MaxUseRank limit, the router joins the DODAG of the 628 RREQ-Instance. The router that transmitted the received RREQ-DIO 629 is selected as the preferred parent. Otherwise, if the Objective 630 Function is not satisfied or the MaxUseRank limit is exceeded, the 631 router MUST discard the received RREQ-DIO and MUST NOT join the 632 DODAG. [minor] "Objective Function (defined in [RFC6551])" Put the reference when OF is first used. ... 642 If the H bit is set to 1, then the router (TargNode or 643 intermediate) MUST build an upward route entry towards OrigNode 644 which MUST include at least the following items: Source Address, 645 InstanceID, Destination Address, Next Hop, Lifetime, and Sequence 646 Number. The Destination Address and the InstanceID respectively 647 can be learned from the DODAGID and the RPLInstanceID of the RREQ- 648 DIO, and the Source Address is the address used by the local 649 router to send data to the OrigNode. The Next Hop is the 650 preferred parent. The lifetime is set according to DODAG 651 configuration (i.e., not the L bit) and can be extended when the 652 route is actually used. The sequence number represents the 653 freshness of the route entry, and it is copied from the Orig SeqNo 654 field of the RREQ option. A route entry with the same source and 655 destination address, same InstanceID, but stale sequence number, 656 MUST be deleted. [major] s/MUST build an upward route entry towards OrigNode which MUST include at least the following items/MUST build an upward route entry towards OrigNode which includes at least the following items 658 Step 4: 660 If the router is an intermediate router, then it transmits a RREQ- 661 DIO via link-local multicast; if the H bit is set to 0, the 662 intermediate router MUST include the address of the interface 663 receiving the RREQ-DIO into the address vector.. Otherwise, if 664 the router (i.e., TargNode) was not already associated with the 665 RREQ-Instance, it prepares a RREP-DIO Section 6.3. If, on the 666 other hand TargNode was already associated with the RREQ-Instance, 667 it takes no further action and does not send an RREP-DIO. [nit] s/../. [nit] s/Section 6.3./(Section 6.3). ... 764 6.4. Receiving and Forwarding Route Reply ... 773 If the S bit of the RREP-DIO is set to 0, the router MUST check 774 the downward direction of the link (towards the TargNode) over 775 which the RREP-DIO is received. If the downward direction of the 776 link can satisfy the Objective Function, and the router's Rank 777 would not exceed the MaxRank limit, the router joins the DODAG of 778 the RREP-Instance. The router that transmitted the received RREP- 779 DIO is selected as the preferred parent. Afterwards, other RREP- 780 DIO messages can be received. [] s/the router MUST check.../the router MUST determine...satisfies IOW, join the two sentences. ... 794 If the H bit is set to 1, then the router (OrigNode or 795 intermediate) MUST build a downward route entry. The route entry 796 MUST include at least the following items: OrigNode Address, 797 InstanceID, TargNode Address as destination, Next Hop, Lifetime 798 and Sequence Number. For a symmetric route, the Next Hop in the 799 route entry is the router from which the RREP-DIO is received. 800 For an asymmetric route, the Next Hop is the preferred parent in 801 the DODAG of RREQ-Instance. The InstanceID in the route entry 802 MUST be the original RPLInstanceID (after subtracting the Shift 803 field value). The source address is learned from the ART Option, 804 and the destination address is learned from the DODAGID. The 805 lifetime is set according to DODAG configuration and can be 806 extended when the route is actually used. The sequence number 807 represents the freshness of the route entry, and is copied from 808 the Dest SeqNo field of the ART option of the RREP-DIO. A route 809 entry with same source and destination address, same InstanceID, 810 but stale sequence number, SHOULD be deleted. [major] s/MUST build a downward route entry. The route entry MUST include at least the following items/MUST build a downward route entry towards TargNode which includes at least the following items [minor] s/The lifetime is set according to DODAG configuration and can be extended when the route is actually used./The lifetime is set according to DODAG configuration (i.e., not the L bit) and can be extended when the route is actually used. [major] s/stale sequence number, SHOULD be deleted./stale sequence number, MUST be deleted. 812 If the H bit is set to 0, for an asymmetric route, an intermediate 813 router MUST include the address of the interface receiving the 814 RREP-DIO into the address vector; for a symmetric route, there is 815 nothing to do in this step. [minor] In =C2=A76.2.1 the part about H=3D0 was moved to Step 4. Please do= the same here. ... 830 Upon receiving a RREP-DIO, a router which already belongs to the 831 RREQ-Instance SHOULD drop the RREP-DIO. [minor] When it is ok to not drop it? I'm assuming that there's no harm in propagating the extra RREP, right? IOW, there's no need for MUST. ... 876 9.1. New Mode of Operation: AODV-RPL 878 IANA is asked to assign a new Mode of Operation, named "AODV-RPL" for 879 Point-to-Point(P2P) hop-by-hop routing from the "Mode of Operation" 880 Registry [RFC6550]. [major] The reference is not needed because even though the registry was defined in rfc6550, the RFC is not the registry. [major] A note should be added indicating that the number in parenthesis is a suggestion. 882 +-------------+---------------+---------------+ 883 | Value | Description | Reference | 884 +-------------+---------------+---------------+ 885 | TBD1 (5) | AODV-RPL | This document | 886 +-------------+---------------+---------------+ 888 Figure 6: Mode of Operation 890 9.2. AODV-RPL Options: RREQ, RREP, and Target 892 IANA is asked to assign three new AODV-RPL options "RREQ", "RREP" and 893 "ART", as described in Figure 7 from the "RPL Control Message 894 Options" Registry [RFC6550]. [major] The reference is not needed because even though the registry was defined in rfc6550, the RFC is not the registry. [major] A note should be added indicating that the number in parenthesis is a suggestion. 896 +-------------+------------------------+---------------+ 897 | Value | Meaning | Reference | 898 +-------------+------------------------+---------------+ 899 | TBD2 (0x0A) | RREQ Option | This document | 900 +-------------+------------------------+---------------+ 901 | TBD3 (0x0B) | RREP Option | This document | 902 +-------------+------------------------+---------------+ 903 | TBD4 (0x0C) | ART Option | This document | 904 +-------------+------------------------+---------------+ [major] 0x0a is already assigned to rfc6997! 906 Figure 7: AODV-RPL Options 908 10. Security Considerations 910 In general, the security considerations for the operation of AODV-RPL 911 are similar to those for the operation of RPL (as described in 912 Section 19 of the RPL specification [RFC6550]). Sections 6.1 and 10 913 of [RFC6550] describe RPL's security framework, which provides data 914 confidentiality, authentication, replay protection, and delay 915 protection services. [] It may be a god idea to also point at rfc7416 as an Informative reference. ... 924 If a rogue router knows the key for the Security Configuration in 925 use, it can join the secure AODV-RPL route discovery and cause 926 various types of damage. Such a rogue router could advertise false 927 information in its DIOs in order to include itself in the discovered 928 route(s). It could generate bogus RREQ-DIO, and RREP-DIO messages 929 carrying bad routes or maliciously modify genuine RREP-DIO messages 930 it receives. A rogue router acting as the OrigNode could launch 931 denial-of-service attacks against the LLN deployment by initiating 932 fake AODV-RPL route discoveries. In this type of scenario, RPL's 933 authenticated mode of operation, where a node can obtain the key to 934 use for a P2P-RPL route discovery only after proper authentication, 935 SHOULD be used. [major] rfc6550 says this: Authenticated mode cannot be supported by symmetric algorithms. As of the writing of this specification, RPL supports only symmetric algorithms: authenticated mode is included for the benefit of potential future cryptographic primitives. If I'm interpreting this correctly, there is really no authentication defined for RPL that can apply here. Has something been defined after that? IOW, what "SHOULD be used"? 937 When RREQ-DIO message uses source routing option with 'H' set to 0, 938 some of the security concerns that led to the deprecation of Type 0 939 routing headers [RFC5095] may apply. To avoid the possibility of a 940 RREP-DIO message traveling in a routing loop, if one of its addresses 941 are present as part of the Source Route listed inside the message, 942 the Intermediate Router MUST NOT forward the message. [major] rfc5095 will probably raise a lot of flags... Suggestion> When a RREQ-DIO message uses the source routing option by setting the H bit to 0, a rogue router may populate the Address Vector field with a set of addresses that may result in the RREP-DIO traveling in a routing loop. The TargNode MUST NOT generate a RREP if one of its addresses is present in the Address Vector. An Intermediate Router MUST NOT forward a RREP if one of its addresses is present in the Address Vector. 944 11. Link State Determination [major] There's already text in =C2=A75 that pretty much says the same thing...except for the first sentence; I couldn't find a place where it says that symmetric is the default, did I miss it? In any case, I think that because of the text in =C2=A75, this section is n= ot needed. 946 This document specifies that links are considered symmetric until 947 additional information is collected. Other link metric information 948 can be acquired before AODV-RPL operation, by executing evaluation 949 procedures; for instance test traffic can be generated between nodes 950 of the deployed network. During AODV-RPL operation, OAM techniques 951 for evaluating link state (see([RFC7548], [RFC7276], [co-ioam]) MAY 952 be used (at regular intervals appropriate for the LLN). The 953 evaluation procedures are out of scope for AODV-RPL. 955 12. References 957 12.1. Normative References ... 964 [RFC3561] Perkins, C., Belding-Royer, E., and S. Das, "Ad hoc On- 965 Demand Distance Vector (AODV) Routing", RFC 3561, 966 DOI 10.17487/RFC3561, July 2003, 967 . [major] This doesn't have to be a Normative reference. ... 991 [RFC6998] Goyal, M., Ed., Baccelli, E., Brandt, A., and J. Martocci, 992 "A Mechanism to Measure the Routing Metrics along a Point- 993 to-Point Route in a Low-Power and Lossy Network", 994 RFC 6998, DOI 10.17487/RFC6998, August 2013, 995 . [major] This shouldn't be a Normative reference. Please make both of them Informative to avoid the DownRef. --000000000000ef23f405b09e51d9 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable =
Ping!

On June = 16, 2020 at 5:36:50 PM, Alvaro Retana (aretana.ietf@gmail.com) wrote:


Dear authors:

This is an incremental review based on some of the changes and the new = text in this version.=C2=A0 Some of the comments are a followup to previous= comments, but there are also some new issues.


Thanks!

Alvaro.


[Line numbers from idnits.]

...
102 1.=C2=A0 Introduction
...
125 =C2=A0 AODV-RPL reuses and provides a natural extension to the cor= e RPL
126 =C2=A0 functionality to support routes with birectional asymmetric= links.
127 =C2=A0 It retains RPL's DODAG formation, RPL Instance and the = associated
128 =C2=A0 Objective Function, trickle timers, and support for storing= and non-
129 =C2=A0 storing modes.=C2=A0 AODV adds basic messages RREQ and RREP= as part of RPL
130 =C2=A0 DIO (DODAG Information Object) control messages, and does n= ot utilize
131 =C2=A0 the DAO message of RPL.=C2=A0 AODV-RPL specifies a new MOP = running in a
132 =C2=A0 seperate instance dedicating to discover P2P routes, which = may differ
133 =C2=A0 from the P2MP routes discoverable by native RPL.=C2=A0 AODV= -RPL can be
134 =C2=A0 operated whether or not native RPL is running otherwise.

[nit] s/seperate instance dedicating/separate instance dedicated

[major] "AODV-RPL can be operated whether or not native RPL is run= ning otherwise." =C2=A0If native RPL is also running in the LLN, it ca= n learn the same routes as the ones discovered through AODV-RPL.=C2=A0 Whic= h route should have preference, or is this a deployment issue and outside t= he scope?

[major] If native RPL is already running in an LLN, how would AODV-RPL = be introduced in the network?=C2=A0 I'm thinking about =C2=A72/rfc5706.


136 2.=C2=A0 Terminology
...
144 =C2=A0 AODV
145 =C2=A0 =C2=A0 =C2=A0Ad Hoc On-demand Distance Vector Routing[RFC35= 61].

[nit] s/Routing[RFC3561]/Routing [RFC3561]


...
422 4.3.=C2=A0 AODV-RPL Target Option
...
451 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Figure 3: Target o= ption format for AODV-RPL MOP

[minor] s/Target option/ART Option (or AODV-RPL Target option)/g(almost= )

There are some places where "target option" is used to refer = to the ART option, but without the extra qualification it may be confused w= ith the Target option in core RPL.=C2=A0 IOW, let's be painfully specif= ic.



...
485 5.=C2=A0 Symmetric and Asymmetric Routes
...
539 =C2=A0 Appendix A describes an example method using the ETX and RS= SI to
540 =C2=A0 estimate whether the link is symmetric in terms of link qua= lity is
541 =C2=A0 given in using an averaging technique.

[minor] Please expand ETX/RSSI.


...
605 6.2.1.=C2=A0 General Processing
...
615 =C2=A0 =C2=A0 =C2=A0If the S bit in the received RREQ-DIO is set t= o 1, the router MUST
616 =C2=A0 =C2=A0 =C2=A0determine whether each direction of the link (= by which the RREQ-
617 =C2=A0 =C2=A0 =C2=A0DIO is received) satisfies the Objective Funct= ion.=C2=A0 In case that
618 =C2=A0 =C2=A0 =C2=A0the downward (i.e. towards the TargNode) direc= tion of the link
619 =C2=A0 =C2=A0 =C2=A0does not satisfy the Objective Function, the l= ink can't be used
620 =C2=A0 =C2=A0 =C2=A0symmetrically, thus the S bit of the RREQ-DIO = to be sent out MUST
621 =C2=A0 =C2=A0 =C2=A0be set as 0.=C2=A0 If the S bit in the receive= d RREQ-DIO is set to 0,
622 =C2=A0 =C2=A0 =C2=A0the router MUST only check into the upward dir= ection (towards the
623 =C2=A0 =C2=A0 =C2=A0OrigNode) of the link.

[major] s/MUST only check/MUST determine...

You fixed the first occurrence of MUST check, but not the second.


625 =C2=A0 =C2=A0 =C2=A0If the upward direction of the link can satisf= y the Objective
626 =C2=A0 =C2=A0 =C2=A0Function (defined in [RFC6551]), and the route= r's Rank would not
627 =C2=A0 =C2=A0 =C2=A0exceed the MaxUseRank limit, the router joins = the DODAG of the
628 =C2=A0 =C2=A0 =C2=A0RREQ-Instance.=C2=A0 The router that transmitt= ed the received RREQ-DIO
629 =C2=A0 =C2=A0 =C2=A0is selected as the preferred parent.=C2=A0 Oth= erwise, if the Objective
630 =C2=A0 =C2=A0 =C2=A0Function is not satisfied or the MaxUseRank li= mit is exceeded, the
631 =C2=A0 =C2=A0 =C2=A0router MUST discard the received RREQ-DIO and = MUST NOT join the
632 =C2=A0 =C2=A0 =C2=A0DODAG.

[minor] "Objective Function (defined in [RFC6551])" =C2=A0 Pu= t the reference when OF is first used.


...
642 =C2=A0 =C2=A0 =C2=A0If the H bit is set to 1, then the router (Tar= gNode or
643 =C2=A0 =C2=A0 =C2=A0intermediate) MUST build an upward route entry= towards OrigNode
644 =C2=A0 =C2=A0 =C2=A0which MUST include at least the following item= s: Source Address,
645 =C2=A0 =C2=A0 =C2=A0InstanceID, Destination Address, Next Hop, Lif= etime, and Sequence
646 =C2=A0 =C2=A0 =C2=A0Number.=C2=A0 The Destination Address and the = InstanceID respectively
647 =C2=A0 =C2=A0 =C2=A0can be learned from the DODAGID and the RPLIns= tanceID of the RREQ-
648 =C2=A0 =C2=A0 =C2=A0DIO, and the Source Address is the address use= d by the local
649 =C2=A0 =C2=A0 =C2=A0router to send data to the OrigNode.=C2=A0 The= Next Hop is the
650 =C2=A0 =C2=A0 =C2=A0preferred parent.=C2=A0 The lifetime is set ac= cording to DODAG
651 =C2=A0 =C2=A0 =C2=A0configuration (i.e., not the L bit) and can be= extended when the
652 =C2=A0 =C2=A0 =C2=A0route is actually used.=C2=A0 The sequence num= ber represents the
653 =C2=A0 =C2=A0 =C2=A0freshness of the route entry, and it is copied= from the Orig SeqNo
654 =C2=A0 =C2=A0 =C2=A0field of the RREQ option.=C2=A0 A route entry = with the same source and
655 =C2=A0 =C2=A0 =C2=A0destination address, same InstanceID, but stal= e sequence number,
656 =C2=A0 =C2=A0 =C2=A0MUST be deleted.

[major] s/MUST build an upward route entry towards OrigNode which MUST = include at least the following items/MUST build an upward route entry towar= ds OrigNode which includes at least the following items


658 =C2=A0 Step 4:

660 =C2=A0 =C2=A0 =C2=A0If the router is an intermediate router, then = it transmits a RREQ-
661 =C2=A0 =C2=A0 =C2=A0DIO via link-local multicast; if the H bit is = set to 0, the
662 =C2=A0 =C2=A0 =C2=A0intermediate router MUST include the address o= f the interface
663 =C2=A0 =C2=A0 =C2=A0receiving the RREQ-DIO into the address vector= ..=C2=A0 Otherwise, if
664 =C2=A0 =C2=A0 =C2=A0the router (i.e., TargNode) was not already as= sociated with the
665 =C2=A0 =C2=A0 =C2=A0RREQ-Instance, it prepares a RREP-DIO Section = 6.3.=C2=A0 If, on the
666 =C2=A0 =C2=A0 =C2=A0other hand TargNode was already associated wit= h the RREQ-Instance,
667 =C2=A0 =C2=A0 =C2=A0it takes no further action and does not send a= n RREP-DIO.

[nit] s/../.

[nit] s/Section 6.3./(Section 6.3).


...
764 6.4.=C2=A0 Receiving and Forwarding Route Reply
...
773 =C2=A0 =C2=A0 =C2=A0If the S bit of the RREP-DIO is set to 0, the = router MUST check
774 =C2=A0 =C2=A0 =C2=A0the downward direction of the link (towards th= e TargNode) over
775 =C2=A0 =C2=A0 =C2=A0which the RREP-DIO is received.=C2=A0 If the d= ownward direction of the
776 =C2=A0 =C2=A0 =C2=A0link can satisfy the Objective Function, and t= he router's Rank
777 =C2=A0 =C2=A0 =C2=A0would not exceed the MaxRank limit, the router= joins the DODAG of
778 =C2=A0 =C2=A0 =C2=A0the RREP-Instance.=C2=A0 The router that trans= mitted the received RREP-
779 =C2=A0 =C2=A0 =C2=A0DIO is selected as the preferred parent.=C2=A0= Afterwards, other RREP-
780 =C2=A0 =C2=A0 =C2=A0DIO messages can be received.

[] s/the router MUST check.../the router MUST determine...satisfies

IOW, join the two sentences.


...
794 =C2=A0 =C2=A0 =C2=A0If the H bit is set to 1, then the router (Ori= gNode or
795 =C2=A0 =C2=A0 =C2=A0intermediate) MUST build a downward route entr= y.=C2=A0 The route entry
796 =C2=A0 =C2=A0 =C2=A0MUST include at least the following items: Ori= gNode Address,
797 =C2=A0 =C2=A0 =C2=A0InstanceID, TargNode Address as destination, N= ext Hop, Lifetime
798 =C2=A0 =C2=A0 =C2=A0and Sequence Number.=C2=A0 For a symmetric rou= te, the Next Hop in the
799 =C2=A0 =C2=A0 =C2=A0route entry is the router from which the RREP-= DIO is received.
800 =C2=A0 =C2=A0 =C2=A0For an asymmetric route, the Next Hop is the p= referred parent in
801 =C2=A0 =C2=A0 =C2=A0the DODAG of RREQ-Instance.=C2=A0 The Instance= ID in the route entry
802 =C2=A0 =C2=A0 =C2=A0MUST be the original RPLInstanceID (after subt= racting the Shift
803 =C2=A0 =C2=A0 =C2=A0field value).=C2=A0 The source address is lear= ned from the ART Option,
804 =C2=A0 =C2=A0 =C2=A0and the destination address is learned from th= e DODAGID.=C2=A0 The
805 =C2=A0 =C2=A0 =C2=A0lifetime is set according to DODAG configurati= on and can be
806 =C2=A0 =C2=A0 =C2=A0extended when the route is actually used.=C2= =A0 The sequence number
807 =C2=A0 =C2=A0 =C2=A0represents the freshness of the route entry, a= nd is copied from
808 =C2=A0 =C2=A0 =C2=A0the Dest SeqNo field of the ART option of the = RREP-DIO.=C2=A0 A route
809 =C2=A0 =C2=A0 =C2=A0entry with same source and destination address= , same InstanceID,
810 =C2=A0 =C2=A0 =C2=A0but stale sequence number, SHOULD be deleted.

[major] s/MUST build a downward route entry.=C2=A0 The route entry MUST= include at least the following items/MUST build a downward route entry tow= ards TargNode which includes at least the following items

[minor] s/The lifetime is set according to DODAG configuration and can = be extended when the route is actually used./The lifetime is set according = to DODAG configuration (i.e., not the L bit) and can be extended when the r= oute is actually used.

[major] s/stale sequence number, SHOULD be deleted./stale sequence numb= er, MUST be deleted.


812 =C2=A0 =C2=A0 =C2=A0If the H bit is set to 0, for an asymmetric ro= ute, an intermediate
813 =C2=A0 =C2=A0 =C2=A0router MUST include the address of the interfa= ce receiving the
814 =C2=A0 =C2=A0 =C2=A0RREP-DIO into the address vector; for a symmet= ric route, there is
815 =C2=A0 =C2=A0 =C2=A0nothing to do in this step.

[minor] In =C2=A76.2.1 the part about H=3D0 was moved to Step 4.=C2=A0 = Please do the same here.


...
830 =C2=A0 Upon receiving a RREP-DIO, a router which already belongs t= o the
831 =C2=A0 RREQ-Instance SHOULD drop the RREP-DIO.

[minor] When it is ok to not drop it?=C2=A0 I'm assuming that there= 's no harm in propagating the extra RREP, right?=C2=A0 IOW, there's= no need for MUST.



...
876 9.1.=C2=A0 New Mode of Operation: AODV-RPL

878 =C2=A0 IANA is asked to assign a new Mode of Operation, named &quo= t;AODV-RPL" for
879 =C2=A0 Point-to-Point(P2P) hop-by-hop routing from the "Mode = of Operation"
880 =C2=A0 Registry [RFC6550].

[major] The reference is not needed because even though the registry wa= s defined in rfc6550, the RFC is not the registry.

[major] A note should be added indicating that the number in parenthesi= s is a suggestion.


882 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+-------------+---= ------------+---------------+
883 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0Val= ue =C2=A0 =C2=A0| =C2=A0Description =C2=A0| =C2=A0 Reference =C2=A0 |
884 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+-------------+---= ------------+---------------+
885 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 TBD1 (5) = =C2=A0| =C2=A0 AODV-RPL =C2=A0 =C2=A0| This document |
886 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+-------------+---= ------------+---------------+

888 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0Figure 6: Mode of Operation

890 9.2.=C2=A0 AODV-RPL Options: RREQ, RREP, and Target

892 =C2=A0 IANA is asked to assign three new AODV-RPL options "RR= EQ", "RREP" and
893 =C2=A0 "ART", as described in Figure 7 from the "RP= L Control Message
894 =C2=A0 Options" Registry [RFC6550].

[major] The reference is not needed because even though the registry wa= s defined in rfc6550, the RFC is not the registry.

[major] A note should be added indicating that the number in parenthesi= s is a suggestion.


896 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+-------------+-----------------= -------+---------------+
897 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0Value =C2=A0 =C2= =A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0Meaning =C2=A0 =C2=A0 =C2=A0 =C2=A0 | =C2= =A0 Reference =C2=A0 |
898 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+-------------+-----------------= -------+---------------+
899 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| TBD2 (0x0A) | =C2=A0 =C2=A0 = =C2=A0RREQ Option =C2=A0 =C2=A0 =C2=A0 | This document |
900 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+-------------+-----------------= -------+---------------+
901 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| TBD3 (0x0B) | =C2=A0 =C2=A0 = =C2=A0RREP Option =C2=A0 =C2=A0 =C2=A0 | This document |
902 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+-------------+-----------------= -------+---------------+
903 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| TBD4 (0x0C) | =C2=A0 =C2=A0 = =C2=A0 ART Option =C2=A0 =C2=A0 =C2=A0 | This document |
904 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+-------------+-----------------= -------+---------------+

[major] 0x0a is already assigned to rfc6997!


906 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0Figure 7: AODV-RPL Options

908 10.=C2=A0 Security Considerations

910 =C2=A0 In general, the security considerations for the operation o= f AODV-RPL
911 =C2=A0 are similar to those for the operation of RPL (as described= in
912 =C2=A0 Section 19 of the RPL specification [RFC6550]).=C2=A0 Secti= ons 6.1 and 10
913 =C2=A0 of [RFC6550] describe RPL's security framework, which p= rovides data
914 =C2=A0 confidentiality, authentication, replay protection, and del= ay
915 =C2=A0 protection services.

[] It may be a god idea to also point at rfc7416 as an Informative refe= rence.


...
924 =C2=A0 If a rogue router knows the key for the Security Configurat= ion in
925 =C2=A0 use, it can join the secure AODV-RPL route discovery and ca= use
926 =C2=A0 various types of damage.=C2=A0 Such a rogue router could ad= vertise false
927 =C2=A0 information in its DIOs in order to include itself in the d= iscovered
928 =C2=A0 route(s).=C2=A0 It could generate bogus RREQ-DIO, and RREP-= DIO messages
929 =C2=A0 carrying bad routes or maliciously modify genuine RREP-DIO = messages
930 =C2=A0 it receives.=C2=A0 A rogue router acting as the OrigNode co= uld launch
931 =C2=A0 denial-of-service attacks against the LLN deployment by ini= tiating
932 =C2=A0 fake AODV-RPL route discoveries.=C2=A0 In this type of scen= ario, RPL's
933 =C2=A0 authenticated mode of operation, where a node can obtain th= e key to
934 =C2=A0 use for a P2P-RPL route discovery only after proper authent= ication,
935 =C2=A0 SHOULD be used.

[major] rfc6550 says this:

=C2=A0 =C2=A0Authenticated mode cannot be supported by symmetric algori= thms. As of the
=C2=A0 =C2=A0writing of this specification, RPL supports only symmetric= algorithms:
=C2=A0 =C2=A0authenticated mode is included for the benefit of potentia= l future
=C2=A0 =C2=A0cryptographic primitives.

If I'm interpreting this correctly, there is really no authenticati= on defined for RPL that can apply here.=C2=A0 Has something been defined af= ter that?=C2=A0 IOW, what "SHOULD be used"?


937 =C2=A0 When RREQ-DIO message uses source routing option with '= H' set to 0,
938 =C2=A0 some of the security concerns that led to the deprecation o= f Type 0
939 =C2=A0 routing headers [RFC5095] may apply.=C2=A0 To avoid the pos= sibility of a
940 =C2=A0 RREP-DIO message traveling in a routing loop, if one of its= addresses
941 =C2=A0 are present as part of the Source Route listed inside the m= essage,
942 =C2=A0 the Intermediate Router MUST NOT forward the message.

[major] rfc5095 will probably raise a lot of flags...

Suggestion>
=C2=A0 =C2=A0When a RREQ-DIO message uses the source routing option by = setting the H
=C2=A0 =C2=A0bit to 0, a rogue router may populate the Address Vector f= ield with a set
=C2=A0 =C2=A0of addresses that may result in the RREP-DIO traveling in = a routing loop.
=C2=A0 =C2=A0The TargNode MUST NOT generate a RREP if one of its addres= ses is present
=C2=A0 =C2=A0in the Address Vector.=C2=A0 An Intermediate Router MUST N= OT forward a RREP if
=C2=A0 =C2=A0one of its addresses is present in the Address Vector.



944 11.=C2=A0 Link State Determination

[major] There's already text in =C2=A75 that pretty much says the s= ame thing...except for the first sentence; I couldn't find a place wher= e it says that symmetric is the default, did I miss it?

In any case, I think that because of the text in =C2=A75, this section = is not needed.

946 =C2=A0 This document specifies that links are considered symmetric= until
947 =C2=A0 additional information is collected.=C2=A0 Other link metri= c information
948 =C2=A0 can be acquired before AODV-RPL operation, by executing eva= luation
949 =C2=A0 procedures; for instance test traffic can be generated betw= een nodes
950 =C2=A0 of the deployed network.=C2=A0 During AODV-RPL operation, O= AM techniques
951 =C2=A0 for evaluating link state (see([RFC7548], [RFC7276], [co-io= am]) MAY
952 =C2=A0 be used (at regular intervals appropriate for the LLN).=C2= =A0 The
953 =C2=A0 evaluation procedures are out of scope for AODV-RPL.


955 12.=C2=A0 References

957 12.1.=C2=A0 Normative References
...
964 =C2=A0 [RFC3561] =C2=A0Perkins, C., Belding-Royer, E., and S. Das,= "Ad hoc On-
965 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Demand Distance Ve= ctor (AODV) Routing", RFC 3561,
966 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0DOI 10.17487/RFC35= 61, July 2003,
967 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<https://www.rfc-editor.org/info/rfc35= 61>.

[major] This doesn't have to be a Normative reference.


...
991 =C2=A0 [RFC6998] =C2=A0Goyal, M., Ed., Baccelli, E., Brandt, A., a= nd J. Martocci,
992 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0"A Mechanism = to Measure the Routing Metrics along a Point-
993 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0to-Point Route in = a Low-Power and Lossy Network",
994 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0RFC 6998, DOI 10.1= 7487/RFC6998, August 2013,
995 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<https://www.rfc-editor.org/info/rfc69= 98>.

[major] This shouldn't be a Normative reference.

Please make both of them Informative to avoid the DownRef.

<= /body> --000000000000ef23f405b09e51d9-- From nobody Thu Oct 1 10:26:03 2020 Return-Path: X-Original-To: roll@ietfa.amsl.com Delivered-To: roll@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 31A333A1171; Thu, 1 Oct 2020 10:26:02 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.312 X-Spam-Level: X-Spam-Status: No, score=-2.312 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HTML_MESSAGE=0.001, NICE_REPLY_A=-0.213, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=earthlink.net; domainkeys=pass (2048-bit key) header.from=charles.perkins@earthlink.net header.d=earthlink.net Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id qsR865uPnEIx; Thu, 1 Oct 2020 10:25:58 -0700 (PDT) Received: from elasmtp-curtail.atl.sa.earthlink.net (elasmtp-curtail.atl.sa.earthlink.net [209.86.89.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 8CEFB3A1170; Thu, 1 Oct 2020 10:25:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=earthlink.net; s=dk12062016; t=1601573158; bh=HWycVSpQvBbbQqAAJ0mQdO26A9DK0cMTzGJW 2ia1TAM=; h=Received:Subject:To:Cc:References:From:Message-ID:Date: User-Agent:MIME-Version:In-Reply-To:Content-Type:Content-Language: X-ELNK-Trace:X-Originating-IP; b=eska3frLvunhm/5pVvqOJU+kRELZhdqYT C5YEsKw31amyZNuvRS7QVp7188shgaf8gPDpCRQ95v0ICgo3WoF6mSawFAwghrPP2SV HTYvrFDtTFUVPbc3H+jlYqw3KwK8rOa4+M+w1SN0HYensxJT4tmvvRzyD7K59brgpne b2LtkJZPIW8d/MZsxWxMT9iwxh/h/Tc7+NH7anar/1LAvLzeQi9s1UVBuBDMS5uIoi6 CuqTTrmLkYqw0+N6aDZ2nMtieK3vi0ftgp1o64jYp/YD4BC2JdjCc9jH1AYi03boTbZ w0BSjpWioy6FsAHAddpPTg/7s9F0H/N0gUeoRBbfg== DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk12062016; d=earthlink.net; b=jdiTnQdA/i/9Mdeq1JwjluQcs5CkP/iFX7N1aoDNgS4BEP5gFo42f6ANay4mXev+HSXOKKyTuza9w/KGnFTUCINLMDl+2wNC4fDYrvPP6fNdie0+eDilQmrRm3wlq7dpStOYPxVyKaNB1xBllLWye7Y1onznvRNeF+KVVxcS/vmlYCIWbA1Vb7AGe5JoRqwlbaU4+91zpz1JSQIuRTxkGc5m8t6+nOdFHXIN5FVGSYCNLE18XX+ml03cKXevldCke5ONuYpJ2U/g88FpHqjcMW1PRP4M8/WhYjQvc7uoAKp7eSKT0anizaxDFGtHkoMShgQ29q6cliacga8pgg9REw==; h=Received:Subject:To:Cc:References:From:Message-ID:Date:User-Agent:MIME-Version:In-Reply-To:Content-Type:Content-Language:X-ELNK-Trace:X-Originating-IP; Received: from [99.51.72.196] (helo=[192.168.1.82]) by elasmtp-curtail.atl.sa.earthlink.net with esmtpsa (TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128) (Exim 4) (envelope-from ) id 1kO2L7-00045I-0Q; Thu, 01 Oct 2020 13:25:57 -0400 To: Routing Over Low power and Lossy networks , Alvaro Retana , "draft-ietf-roll-aodv-rpl@ietf.org" Cc: roll-chairs@ietf.org, Ines Robles References: From: Charlie Perkins Message-ID: Date: Thu, 1 Oct 2020 10:25:54 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.12.0 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/alternative; boundary="------------6FD9F7E22D3124CA15B824EF" Content-Language: en-US X-ELNK-Trace: 137d7d78656ed6919973fd6a8f21c4f2d780f4a490ca6956df8303b86ceddf55492fc17ee048b72eb0b36bff673697d4350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 99.51.72.196 Archived-At: Subject: Re: [Roll] AD Review of draft-ietf-roll-aodv-rpl-08 X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 01 Oct 2020 17:26:02 -0000 This is a multi-part message in MIME format. --------------6FD9F7E22D3124CA15B824EF Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Hello folks, It's a busy time in this neck of the woods, due to end-of-month business deadlines.  I'll try to respond next week. Regards, Charlie P. On 10/1/2020 9:15 AM, Alvaro Retana wrote: > Ping! > > On June 16, 2020 at 5:36:50 PM, Alvaro Retana (aretana.ietf@gmail.com > ) wrote: > >> >> Dear authors: >> >> This is an incremental review based on some of the changes and the >> new text in this version.  Some of the comments are a followup to >> previous comments, but there are also some new issues. >> >> >> Thanks! >> >> Alvaro. >> >> >> [Line numbers from idnits.] >> >> ... >> 102 1.  Introduction >> ... >> 125   AODV-RPL reuses and provides a natural extension to the core RPL >> 126   functionality to support routes with birectional asymmetric links. >> 127   It retains RPL's DODAG formation, RPL Instance and the associated >> 128   Objective Function, trickle timers, and support for storing and >> non- >> 129   storing modes.  AODV adds basic messages RREQ and RREP as part >> of RPL >> 130   DIO (DODAG Information Object) control messages, and does not >> utilize >> 131   the DAO message of RPL.  AODV-RPL specifies a new MOP running in a >> 132   seperate instance dedicating to discover P2P routes, which may >> differ >> 133   from the P2MP routes discoverable by native RPL. AODV-RPL can be >> 134   operated whether or not native RPL is running otherwise. >> >> [nit] s/seperate instance dedicating/separate instance dedicated >> >> [major] "AODV-RPL can be operated whether or not native RPL is >> running otherwise."  If native RPL is also running in the LLN, it can >> learn the same routes as the ones discovered through AODV-RPL.  Which >> route should have preference, or is this a deployment issue and >> outside the scope? >> >> [major] If native RPL is already running in an LLN, how would >> AODV-RPL be introduced in the network?  I'm thinking about §2/rfc5706. >> >> >> 136 2.  Terminology >> ... >> 144   AODV >> 145      Ad Hoc On-demand Distance Vector Routing[RFC3561]. >> >> [nit] s/Routing[RFC3561]/Routing [RFC3561] >> >> >> ... >> 422 4.3.  AODV-RPL Target Option >> ... >> 451              Figure 3: Target option format for AODV-RPL MOP >> >> [minor] s/Target option/ART Option (or AODV-RPL Target option)/g(almost) >> >> There are some places where "target option" is used to refer to the >> ART option, but without the extra qualification it may be confused >> with the Target option in core RPL.  IOW, let's be painfully specific. >> >> >> >> ... >> 485 5.  Symmetric and Asymmetric Routes >> ... >> 539   Appendix A describes an example method using the ETX and RSSI to >> 540   estimate whether the link is symmetric in terms of link quality is >> 541   given in using an averaging technique. >> >> [minor] Please expand ETX/RSSI. >> >> >> ... >> 605 6.2.1.  General Processing >> ... >> 615      If the S bit in the received RREQ-DIO is set to 1, the >> router MUST >> 616      determine whether each direction of the link (by which the >> RREQ- >> 617      DIO is received) satisfies the Objective Function.  In case >> that >> 618      the downward (i.e. towards the TargNode) direction of the link >> 619      does not satisfy the Objective Function, the link can't be used >> 620      symmetrically, thus the S bit of the RREQ-DIO to be sent out >> MUST >> 621      be set as 0.  If the S bit in the received RREQ-DIO is set >> to 0, >> 622      the router MUST only check into the upward direction >> (towards the >> 623      OrigNode) of the link. >> >> [major] s/MUST only check/MUST determine... >> >> You fixed the first occurrence of MUST check, but not the second. >> >> >> 625      If the upward direction of the link can satisfy the Objective >> 626      Function (defined in [RFC6551]), and the router's Rank would >> not >> 627      exceed the MaxUseRank limit, the router joins the DODAG of the >> 628      RREQ-Instance.  The router that transmitted the received >> RREQ-DIO >> 629      is selected as the preferred parent.  Otherwise, if the >> Objective >> 630      Function is not satisfied or the MaxUseRank limit is >> exceeded, the >> 631      router MUST discard the received RREQ-DIO and MUST NOT join the >> 632      DODAG. >> >> [minor] "Objective Function (defined in [RFC6551])"   Put the >> reference when OF is first used. >> >> >> ... >> 642      If the H bit is set to 1, then the router (TargNode or >> 643      intermediate) MUST build an upward route entry towards OrigNode >> 644      which MUST include at least the following items: Source >> Address, >> 645      InstanceID, Destination Address, Next Hop, Lifetime, and >> Sequence >> 646      Number.  The Destination Address and the InstanceID >> respectively >> 647      can be learned from the DODAGID and the RPLInstanceID of the >> RREQ- >> 648      DIO, and the Source Address is the address used by the local >> 649      router to send data to the OrigNode.  The Next Hop is the >> 650      preferred parent.  The lifetime is set according to DODAG >> 651      configuration (i.e., not the L bit) and can be extended when >> the >> 652      route is actually used.  The sequence number represents the >> 653      freshness of the route entry, and it is copied from the Orig >> SeqNo >> 654      field of the RREQ option.  A route entry with the same >> source and >> 655      destination address, same InstanceID, but stale sequence >> number, >> 656      MUST be deleted. >> >> [major] s/MUST build an upward route entry towards OrigNode which >> MUST include at least the following items/MUST build an upward route >> entry towards OrigNode which includes at least the following items >> >> >> 658   Step 4: >> >> 660      If the router is an intermediate router, then it transmits a >> RREQ- >> 661      DIO via link-local multicast; if the H bit is set to 0, the >> 662      intermediate router MUST include the address of the interface >> 663      receiving the RREQ-DIO into the address vector.. Otherwise, if >> 664      the router (i.e., TargNode) was not already associated with the >> 665      RREQ-Instance, it prepares a RREP-DIO Section 6.3.  If, on the >> 666      other hand TargNode was already associated with the >> RREQ-Instance, >> 667      it takes no further action and does not send an RREP-DIO. >> >> [nit] s/../. >> >> [nit] s/Section 6.3./(Section 6.3). >> >> >> ... >> 764 6.4.  Receiving and Forwarding Route Reply >> ... >> 773      If the S bit of the RREP-DIO is set to 0, the router MUST check >> 774      the downward direction of the link (towards the TargNode) over >> 775      which the RREP-DIO is received.  If the downward direction >> of the >> 776      link can satisfy the Objective Function, and the router's Rank >> 777      would not exceed the MaxRank limit, the router joins the >> DODAG of >> 778      the RREP-Instance.  The router that transmitted the received >> RREP- >> 779      DIO is selected as the preferred parent. Afterwards, other >> RREP- >> 780      DIO messages can be received. >> >> [] s/the router MUST check.../the router MUST determine...satisfies >> >> IOW, join the two sentences. >> >> >> ... >> 794      If the H bit is set to 1, then the router (OrigNode or >> 795      intermediate) MUST build a downward route entry. The route >> entry >> 796      MUST include at least the following items: OrigNode Address, >> 797      InstanceID, TargNode Address as destination, Next Hop, Lifetime >> 798      and Sequence Number.  For a symmetric route, the Next Hop in >> the >> 799      route entry is the router from which the RREP-DIO is received. >> 800      For an asymmetric route, the Next Hop is the preferred >> parent in >> 801      the DODAG of RREQ-Instance.  The InstanceID in the route entry >> 802      MUST be the original RPLInstanceID (after subtracting the Shift >> 803      field value).  The source address is learned from the ART >> Option, >> 804      and the destination address is learned from the DODAGID.  The >> 805      lifetime is set according to DODAG configuration and can be >> 806      extended when the route is actually used.  The sequence number >> 807      represents the freshness of the route entry, and is copied from >> 808      the Dest SeqNo field of the ART option of the RREP-DIO.  A >> route >> 809      entry with same source and destination address, same >> InstanceID, >> 810      but stale sequence number, SHOULD be deleted. >> >> [major] s/MUST build a downward route entry.  The route entry MUST >> include at least the following items/MUST build a downward route >> entry towards TargNode which includes at least the following items >> >> [minor] s/The lifetime is set according to DODAG configuration and >> can be extended when the route is actually used./The lifetime is set >> according to DODAG configuration (i.e., not the L bit) and can be >> extended when the route is actually used. >> >> [major] s/stale sequence number, SHOULD be deleted./stale sequence >> number, MUST be deleted. >> >> >> 812      If the H bit is set to 0, for an asymmetric route, an >> intermediate >> 813      router MUST include the address of the interface receiving the >> 814      RREP-DIO into the address vector; for a symmetric route, >> there is >> 815      nothing to do in this step. >> >> [minor] In §6.2.1 the part about H=0 was moved to Step 4. Please do >> the same here. >> >> >> ... >> 830   Upon receiving a RREP-DIO, a router which already belongs to the >> 831   RREQ-Instance SHOULD drop the RREP-DIO. >> >> [minor] When it is ok to not drop it?  I'm assuming that there's no >> harm in propagating the extra RREP, right? IOW, there's no need for >> MUST. >> >> >> >> ... >> 876 9.1.  New Mode of Operation: AODV-RPL >> >> 878   IANA is asked to assign a new Mode of Operation, named >> "AODV-RPL" for >> 879   Point-to-Point(P2P) hop-by-hop routing from the "Mode of >> Operation" >> 880   Registry [RFC6550]. >> >> [major] The reference is not needed because even though the registry >> was defined in rfc6550, the RFC is not the registry. >> >> [major] A note should be added indicating that the number in >> parenthesis is a suggestion. >> >> >> 882  +-------------+---------------+---------------+ >> 883              |    Value    |  Description  | Reference   | >> 884  +-------------+---------------+---------------+ >> 885              |   TBD1 (5)  |   AODV-RPL    | This document | >> 886  +-------------+---------------+---------------+ >> >> 888                        Figure 6: Mode of Operation >> >> 890 9.2.  AODV-RPL Options: RREQ, RREP, and Target >> >> 892   IANA is asked to assign three new AODV-RPL options "RREQ", >> "RREP" and >> 893   "ART", as described in Figure 7 from the "RPL Control Message >> 894   Options" Registry [RFC6550]. >> >> [major] The reference is not needed because even though the registry >> was defined in rfc6550, the RFC is not the registry. >> >> [major] A note should be added indicating that the number in >> parenthesis is a suggestion. >> >> >> 896  +-------------+------------------------+---------------+ >> 897          |    Value    |        Meaning         | Reference   | >> 898  +-------------+------------------------+---------------+ >> 899          | TBD2 (0x0A) |      RREQ Option       | This document | >> 900  +-------------+------------------------+---------------+ >> 901          | TBD3 (0x0B) |      RREP Option       | This document | >> 902  +-------------+------------------------+---------------+ >> 903          | TBD4 (0x0C) |       ART Option       | This document | >> 904  +-------------+------------------------+---------------+ >> >> [major] 0x0a is already assigned to rfc6997! >> >> >> 906                        Figure 7: AODV-RPL Options >> >> 908 10.  Security Considerations >> >> 910   In general, the security considerations for the operation of >> AODV-RPL >> 911   are similar to those for the operation of RPL (as described in >> 912   Section 19 of the RPL specification [RFC6550]). Sections 6.1 >> and 10 >> 913   of [RFC6550] describe RPL's security framework, which provides >> data >> 914   confidentiality, authentication, replay protection, and delay >> 915   protection services. >> >> [] It may be a god idea to also point at rfc7416 as an Informative >> reference. >> >> >> ... >> 924   If a rogue router knows the key for the Security Configuration in >> 925   use, it can join the secure AODV-RPL route discovery and cause >> 926   various types of damage.  Such a rogue router could advertise >> false >> 927   information in its DIOs in order to include itself in the >> discovered >> 928   route(s).  It could generate bogus RREQ-DIO, and RREP-DIO messages >> 929   carrying bad routes or maliciously modify genuine RREP-DIO >> messages >> 930   it receives.  A rogue router acting as the OrigNode could launch >> 931   denial-of-service attacks against the LLN deployment by initiating >> 932   fake AODV-RPL route discoveries.  In this type of scenario, RPL's >> 933   authenticated mode of operation, where a node can obtain the >> key to >> 934   use for a P2P-RPL route discovery only after proper >> authentication, >> 935   SHOULD be used. >> >> [major] rfc6550 says this: >> >>    Authenticated mode cannot be supported by symmetric algorithms. As >> of the >>    writing of this specification, RPL supports only symmetric >> algorithms: >>    authenticated mode is included for the benefit of potential future >>    cryptographic primitives. >> >> If I'm interpreting this correctly, there is really no authentication >> defined for RPL that can apply here.  Has something been defined >> after that?  IOW, what "SHOULD be used"? >> >> >> 937   When RREQ-DIO message uses source routing option with 'H' set >> to 0, >> 938   some of the security concerns that led to the deprecation of >> Type 0 >> 939   routing headers [RFC5095] may apply.  To avoid the possibility >> of a >> 940   RREP-DIO message traveling in a routing loop, if one of its >> addresses >> 941   are present as part of the Source Route listed inside the message, >> 942   the Intermediate Router MUST NOT forward the message. >> >> [major] rfc5095 will probably raise a lot of flags... >> >> Suggestion> >>    When a RREQ-DIO message uses the source routing option by setting >> the H >>    bit to 0, a rogue router may populate the Address Vector field >> with a set >>    of addresses that may result in the RREP-DIO traveling in a >> routing loop. >>    The TargNode MUST NOT generate a RREP if one of its addresses is >> present >>    in the Address Vector.  An Intermediate Router MUST NOT forward a >> RREP if >>    one of its addresses is present in the Address Vector. >> >> >> >> 944 11.  Link State Determination >> >> [major] There's already text in §5 that pretty much says the same >> thing...except for the first sentence; I couldn't find a place where >> it says that symmetric is the default, did I miss it? >> >> In any case, I think that because of the text in §5, this section is >> not needed. >> >> 946   This document specifies that links are considered symmetric until >> 947   additional information is collected.  Other link metric >> information >> 948   can be acquired before AODV-RPL operation, by executing evaluation >> 949   procedures; for instance test traffic can be generated between >> nodes >> 950   of the deployed network.  During AODV-RPL operation, OAM >> techniques >> 951   for evaluating link state (see([RFC7548], [RFC7276], [co-ioam]) >> MAY >> 952   be used (at regular intervals appropriate for the LLN).  The >> 953   evaluation procedures are out of scope for AODV-RPL. >> >> >> 955 12.  References >> >> 957 12.1.  Normative References >> ... >> 964   [RFC3561]  Perkins, C., Belding-Royer, E., and S. Das, "Ad hoc On- >> 965              Demand Distance Vector (AODV) Routing", RFC 3561, >> 966              DOI 10.17487/RFC3561, July 2003, >> 967              . >> >> [major] This doesn't have to be a Normative reference. >> >> >> ... >> 991   [RFC6998]  Goyal, M., Ed., Baccelli, E., Brandt, A., and J. >> Martocci, >> 992              "A Mechanism to Measure the Routing Metrics along a >> Point- >> 993              to-Point Route in a Low-Power and Lossy Network", >> 994              RFC 6998, DOI 10.17487/RFC6998, August 2013, >> 995              . >> >> [major] This shouldn't be a Normative reference. >> >> Please make both of them Informative to avoid the DownRef. >> > > _______________________________________________ > Roll mailing list > Roll@ietf.org > https://www.ietf.org/mailman/listinfo/roll --------------6FD9F7E22D3124CA15B824EF Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit Hello folks,

It's a busy time in this neck of the woods, due to end-of-month business deadlines.  I'll try to respond next week.

Regards,
Charlie P.


On 10/1/2020 9:15 AM, Alvaro Retana wrote:
Ping!

On June 16, 2020 at 5:36:50 PM, Alvaro Retana (aretana.ietf@gmail.com) wrote:


Dear authors:

This is an incremental review based on some of the changes and the new text in this version.  Some of the comments are a followup to previous comments, but there are also some new issues.


Thanks!

Alvaro.


[Line numbers from idnits.]

...
102 1.  Introduction
...
125   AODV-RPL reuses and provides a natural extension to the core RPL
126   functionality to support routes with birectional asymmetric links.
127   It retains RPL's DODAG formation, RPL Instance and the associated
128   Objective Function, trickle timers, and support for storing and non-
129   storing modes.  AODV adds basic messages RREQ and RREP as part of RPL
130   DIO (DODAG Information Object) control messages, and does not utilize
131   the DAO message of RPL.  AODV-RPL specifies a new MOP running in a
132   seperate instance dedicating to discover P2P routes, which may differ
133   from the P2MP routes discoverable by native RPL.  AODV-RPL can be
134   operated whether or not native RPL is running otherwise.

[nit] s/seperate instance dedicating/separate instance dedicated

[major] "AODV-RPL can be operated whether or not native RPL is running otherwise."  If native RPL is also running in the LLN, it can learn the same routes as the ones discovered through AODV-RPL.  Which route should have preference, or is this a deployment issue and outside the scope?

[major] If native RPL is already running in an LLN, how would AODV-RPL be introduced in the network?  I'm thinking about §2/rfc5706.


136 2.  Terminology
...
144   AODV
145      Ad Hoc On-demand Distance Vector Routing[RFC3561].

[nit] s/Routing[RFC3561]/Routing [RFC3561]


...
422 4.3.  AODV-RPL Target Option
...
451              Figure 3: Target option format for AODV-RPL MOP

[minor] s/Target option/ART Option (or AODV-RPL Target option)/g(almost)

There are some places where "target option" is used to refer to the ART option, but without the extra qualification it may be confused with the Target option in core RPL.  IOW, let's be painfully specific.



...
485 5.  Symmetric and Asymmetric Routes
...
539   Appendix A describes an example method using the ETX and RSSI to
540   estimate whether the link is symmetric in terms of link quality is
541   given in using an averaging technique.

[minor] Please expand ETX/RSSI.


...
605 6.2.1.  General Processing
...
615      If the S bit in the received RREQ-DIO is set to 1, the router MUST
616      determine whether each direction of the link (by which the RREQ-
617      DIO is received) satisfies the Objective Function.  In case that
618      the downward (i.e. towards the TargNode) direction of the link
619      does not satisfy the Objective Function, the link can't be used
620      symmetrically, thus the S bit of the RREQ-DIO to be sent out MUST
621      be set as 0.  If the S bit in the received RREQ-DIO is set to 0,
622      the router MUST only check into the upward direction (towards the
623      OrigNode) of the link.

[major] s/MUST only check/MUST determine...

You fixed the first occurrence of MUST check, but not the second.


625      If the upward direction of the link can satisfy the Objective
626      Function (defined in [RFC6551]), and the router's Rank would not
627      exceed the MaxUseRank limit, the router joins the DODAG of the
628      RREQ-Instance.  The router that transmitted the received RREQ-DIO
629      is selected as the preferred parent.  Otherwise, if the Objective
630      Function is not satisfied or the MaxUseRank limit is exceeded, the
631      router MUST discard the received RREQ-DIO and MUST NOT join the
632      DODAG.

[minor] "Objective Function (defined in [RFC6551])"   Put the reference when OF is first used.


...
642      If the H bit is set to 1, then the router (TargNode or
643      intermediate) MUST build an upward route entry towards OrigNode
644      which MUST include at least the following items: Source Address,
645      InstanceID, Destination Address, Next Hop, Lifetime, and Sequence
646      Number.  The Destination Address and the InstanceID respectively
647      can be learned from the DODAGID and the RPLInstanceID of the RREQ-
648      DIO, and the Source Address is the address used by the local
649      router to send data to the OrigNode.  The Next Hop is the
650      preferred parent.  The lifetime is set according to DODAG
651      configuration (i.e., not the L bit) and can be extended when the
652      route is actually used.  The sequence number represents the
653      freshness of the route entry, and it is copied from the Orig SeqNo
654      field of the RREQ option.  A route entry with the same source and
655      destination address, same InstanceID, but stale sequence number,
656      MUST be deleted.

[major] s/MUST build an upward route entry towards OrigNode which MUST include at least the following items/MUST build an upward route entry towards OrigNode which includes at least the following items


658   Step 4:

660      If the router is an intermediate router, then it transmits a RREQ-
661      DIO via link-local multicast; if the H bit is set to 0, the
662      intermediate router MUST include the address of the interface
663      receiving the RREQ-DIO into the address vector..  Otherwise, if
664      the router (i.e., TargNode) was not already associated with the
665      RREQ-Instance, it prepares a RREP-DIO Section 6.3.  If, on the
666      other hand TargNode was already associated with the RREQ-Instance,
667      it takes no further action and does not send an RREP-DIO.

[nit] s/../.

[nit] s/Section 6.3./(Section 6.3).


...
764 6.4.  Receiving and Forwarding Route Reply
...
773      If the S bit of the RREP-DIO is set to 0, the router MUST check
774      the downward direction of the link (towards the TargNode) over
775      which the RREP-DIO is received.  If the downward direction of the
776      link can satisfy the Objective Function, and the router's Rank
777      would not exceed the MaxRank limit, the router joins the DODAG of
778      the RREP-Instance.  The router that transmitted the received RREP-
779      DIO is selected as the preferred parent.  Afterwards, other RREP-
780      DIO messages can be received.

[] s/the router MUST check.../the router MUST determine...satisfies

IOW, join the two sentences.


...
794      If the H bit is set to 1, then the router (OrigNode or
795      intermediate) MUST build a downward route entry.  The route entry
796      MUST include at least the following items: OrigNode Address,
797      InstanceID, TargNode Address as destination, Next Hop, Lifetime
798      and Sequence Number.  For a symmetric route, the Next Hop in the
799      route entry is the router from which the RREP-DIO is received.
800      For an asymmetric route, the Next Hop is the preferred parent in
801      the DODAG of RREQ-Instance.  The InstanceID in the route entry
802      MUST be the original RPLInstanceID (after subtracting the Shift
803      field value).  The source address is learned from the ART Option,
804      and the destination address is learned from the DODAGID.  The
805      lifetime is set according to DODAG configuration and can be
806      extended when the route is actually used.  The sequence number
807      represents the freshness of the route entry, and is copied from
808      the Dest SeqNo field of the ART option of the RREP-DIO.  A route
809      entry with same source and destination address, same InstanceID,
810      but stale sequence number, SHOULD be deleted.

[major] s/MUST build a downward route entry.  The route entry MUST include at least the following items/MUST build a downward route entry towards TargNode which includes at least the following items

[minor] s/The lifetime is set according to DODAG configuration and can be extended when the route is actually used./The lifetime is set according to DODAG configuration (i.e., not the L bit) and can be extended when the route is actually used.

[major] s/stale sequence number, SHOULD be deleted./stale sequence number, MUST be deleted.


812      If the H bit is set to 0, for an asymmetric route, an intermediate
813      router MUST include the address of the interface receiving the
814      RREP-DIO into the address vector; for a symmetric route, there is
815      nothing to do in this step.

[minor] In §6.2.1 the part about H=0 was moved to Step 4.  Please do the same here.


...
830   Upon receiving a RREP-DIO, a router which already belongs to the
831   RREQ-Instance SHOULD drop the RREP-DIO.

[minor] When it is ok to not drop it?  I'm assuming that there's no harm in propagating the extra RREP, right?  IOW, there's no need for MUST.



...
876 9.1.  New Mode of Operation: AODV-RPL

878   IANA is asked to assign a new Mode of Operation, named "AODV-RPL" for
879   Point-to-Point(P2P) hop-by-hop routing from the "Mode of Operation"
880   Registry [RFC6550].

[major] The reference is not needed because even though the registry was defined in rfc6550, the RFC is not the registry.

[major] A note should be added indicating that the number in parenthesis is a suggestion.


882              +-------------+---------------+---------------+
883              |    Value    |  Description  |   Reference   |
884              +-------------+---------------+---------------+
885              |   TBD1 (5)  |   AODV-RPL    | This document |
886              +-------------+---------------+---------------+

888                        Figure 6: Mode of Operation

890 9.2.  AODV-RPL Options: RREQ, RREP, and Target

892   IANA is asked to assign three new AODV-RPL options "RREQ", "RREP" and
893   "ART", as described in Figure 7 from the "RPL Control Message
894   Options" Registry [RFC6550].

[major] The reference is not needed because even though the registry was defined in rfc6550, the RFC is not the registry.

[major] A note should be added indicating that the number in parenthesis is a suggestion.


896          +-------------+------------------------+---------------+
897          |    Value    |        Meaning         |   Reference   |
898          +-------------+------------------------+---------------+
899          | TBD2 (0x0A) |      RREQ Option       | This document |
900          +-------------+------------------------+---------------+
901          | TBD3 (0x0B) |      RREP Option       | This document |
902          +-------------+------------------------+---------------+
903          | TBD4 (0x0C) |       ART Option       | This document |
904          +-------------+------------------------+---------------+

[major] 0x0a is already assigned to rfc6997!


906                        Figure 7: AODV-RPL Options

908 10.  Security Considerations

910   In general, the security considerations for the operation of AODV-RPL
911   are similar to those for the operation of RPL (as described in
912   Section 19 of the RPL specification [RFC6550]).  Sections 6.1 and 10
913   of [RFC6550] describe RPL's security framework, which provides data
914   confidentiality, authentication, replay protection, and delay
915   protection services.

[] It may be a god idea to also point at rfc7416 as an Informative reference.


...
924   If a rogue router knows the key for the Security Configuration in
925   use, it can join the secure AODV-RPL route discovery and cause
926   various types of damage.  Such a rogue router could advertise false
927   information in its DIOs in order to include itself in the discovered
928   route(s).  It could generate bogus RREQ-DIO, and RREP-DIO messages
929   carrying bad routes or maliciously modify genuine RREP-DIO messages
930   it receives.  A rogue router acting as the OrigNode could launch
931   denial-of-service attacks against the LLN deployment by initiating
932   fake AODV-RPL route discoveries.  In this type of scenario, RPL's
933   authenticated mode of operation, where a node can obtain the key to
934   use for a P2P-RPL route discovery only after proper authentication,
935   SHOULD be used.

[major] rfc6550 says this:

   Authenticated mode cannot be supported by symmetric algorithms. As of the
   writing of this specification, RPL supports only symmetric algorithms:
   authenticated mode is included for the benefit of potential future
   cryptographic primitives.

If I'm interpreting this correctly, there is really no authentication defined for RPL that can apply here.  Has something been defined after that?  IOW, what "SHOULD be used"?


937   When RREQ-DIO message uses source routing option with 'H' set to 0,
938   some of the security concerns that led to the deprecation of Type 0
939   routing headers [RFC5095] may apply.  To avoid the possibility of a
940   RREP-DIO message traveling in a routing loop, if one of its addresses
941   are present as part of the Source Route listed inside the message,
942   the Intermediate Router MUST NOT forward the message.

[major] rfc5095 will probably raise a lot of flags...

Suggestion>
   When a RREQ-DIO message uses the source routing option by setting the H
   bit to 0, a rogue router may populate the Address Vector field with a set
   of addresses that may result in the RREP-DIO traveling in a routing loop.
   The TargNode MUST NOT generate a RREP if one of its addresses is present
   in the Address Vector.  An Intermediate Router MUST NOT forward a RREP if
   one of its addresses is present in the Address Vector.



944 11.  Link State Determination

[major] There's already text in §5 that pretty much says the same thing...except for the first sentence; I couldn't find a place where it says that symmetric is the default, did I miss it?

In any case, I think that because of the text in §5, this section is not needed.

946   This document specifies that links are considered symmetric until
947   additional information is collected.  Other link metric information
948   can be acquired before AODV-RPL operation, by executing evaluation
949   procedures; for instance test traffic can be generated between nodes
950   of the deployed network.  During AODV-RPL operation, OAM techniques
951   for evaluating link state (see([RFC7548], [RFC7276], [co-ioam]) MAY
952   be used (at regular intervals appropriate for the LLN).  The
953   evaluation procedures are out of scope for AODV-RPL.


955 12.  References

957 12.1.  Normative References
...
964   [RFC3561]  Perkins, C., Belding-Royer, E., and S. Das, "Ad hoc On-
965              Demand Distance Vector (AODV) Routing", RFC 3561,
966              DOI 10.17487/RFC3561, July 2003,
967              <https://www.rfc-editor.org/info/rfc3561>.

[major] This doesn't have to be a Normative reference.


...
991   [RFC6998]  Goyal, M., Ed., Baccelli, E., Brandt, A., and J. Martocci,
992              "A Mechanism to Measure the Routing Metrics along a Point-
993              to-Point Route in a Low-Power and Lossy Network",
994              RFC 6998, DOI 10.17487/RFC6998, August 2013,
995              <https://www.rfc-editor.org/info/rfc6998>.

[major] This shouldn't be a Normative reference.

Please make both of them Informative to avoid the DownRef. 


_______________________________________________
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Hello All,

During the interim, Pascal r= aised this point as to whether it is necessary to have a secure message cou= nter-part for every new message that is defined in new drafts?
To put it in context, currently we have:
Code 0x00 -= > DIS, 0x80 -> Secure DIS
Code 0x01 -> DIO, 0x81 -> S= ecure DIO ... so on for all other messages we have a secure equivalent. Ina= dvertently, the MSB is reserved as a secure bit (without explicitly stating= so).

Problem is, there is no one out there using = secure messages at RPL layer (would be very happy to be proved wrong here).= Most deployments depend on L2 security for RPL messaging.

So given the context, is it necessary for new drafts to work on se= cure messaging for new messages drafted?

My take i= s that given that the work required to specify secure messages is not much,= we should do it anyways for all new msgs.=C2=A0 In terms of saving some co= des, I believe we may not be able to save much since the implementations mi= ght check the MSB to find if the message is secure or not, thus non-secure = messages may not be able to use that bit.
Also adding a new messa= ge code is much rare as compared to adding new control options. Almost ever= y new draft is adding a new control option but very few are adding new mess= age code.

However, we currently have two drafts DA= O-Projection and Capabilities defining new message codes, and hence this di= scussion may be relevant now.

Thoughts welcome.

Regards,
Rahul
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draft-ietf-roll-dao-projection-14.txt X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 02 Oct 2020 16:47:52 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Routing Over Low power and Lossy networks WG of the IETF. Title : Root initiated routing state in RPL Authors : Pascal Thubert Rahul Arvind Jadhav Matthew Gillmore Filename : draft-ietf-roll-dao-projection-14.txt Pages : 31 Date : 2020-10-02 Abstract: This document updates RFC 6550 to enable a RPL Root to install and maintain Projected Routes within its DODAG, along a selected set of nodes that may or may not include self, for a chosen duration. This potentially enables routes that are more optimized or resilient than those obtained with the classical distributed operation of RPL, either in terms of the size of a Routing Header or in terms of path length, which impacts both the latency and the packet delivery ratio. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-roll-dao-projection/ There is also a HTML versions available at: https://www.ietf.org/id/draft-ietf-roll-dao-projection-14.html A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-roll-dao-projection-14 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. 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Fri, 2 Oct 2020 16:54:07 +0000 From: "Pascal Thubert (pthubert)" To: Routing Over Low power and Lossy networks Thread-Topic: [Roll] I-D Action: draft-ietf-roll-dao-projection-14.txt Thread-Index: AQHWmNv4R7iQ0S8YNk6RkGndofORgamEhqKA Date: Fri, 2 Oct 2020 16:53:52 +0000 Deferred-Delivery: Fri, 2 Oct 2020 16:53:10 +0000 Message-ID: References: <160165727188.31217.17891259405681319343@ietfa.amsl.com> In-Reply-To: <160165727188.31217.17891259405681319343@ietfa.amsl.com> Accept-Language: fr-FR, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: ietf.org; dkim=none (message not signed) header.d=none;ietf.org; dmarc=none action=none header.from=cisco.com; x-originating-ip: [2a01:cb1d:4ec:2200:8c40:de0b:c3c9:a0d3] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 11c9e180-11dc-4e6c-9b2b-08d866f3c730 x-ms-traffictypediagnostic: MN2PR11MB3550: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:9508; x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: MN2PR11MB3565.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 11c9e180-11dc-4e6c-9b2b-08d866f3c730 X-MS-Exchange-CrossTenant-originalarrivaltime: 02 Oct 2020 16:54:07.6863 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 5ae1af62-9505-4097-a69a-c1553ef7840e X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: /Wj2Kn2swTwipwwOcj7I0Ahj/f+MSgFifI+dKyxdhf1oBJ9KZv89riHc2hK3Sg1/0pXhRG9WPUkwySArPghxqA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR11MB3550 X-OriginatorOrg: cisco.com X-Outbound-SMTP-Client: 173.36.7.15, xch-aln-005.cisco.com X-Outbound-Node: rcdn-core-11.cisco.com Archived-At: Subject: [Roll] FW: I-D Action: draft-ietf-roll-dao-projection-14.txt X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 02 Oct 2020 16:54:19 -0000 Dear all As promised during the interim I fixed and number of inconsistencies and im= plemented the simplifications we discussed. I believe we're getting there. It would be awfully nice if we could get som= e reviews before IETF. Keep safe! Pascal -----Original Message----- From: Roll On Behalf Of internet-drafts@ietf.org Sent: vendredi 2 octobre 2020 18:48 To: i-d-announce@ietf.org Cc: roll@ietf.org Subject: [Roll] I-D Action: draft-ietf-roll-dao-projection-14.txt A New Internet-Draft is available from the on-line Internet-Drafts director= ies. This draft is a work item of the Routing Over Low power and Lossy networks = WG of the IETF. Title : Root initiated routing state in RPL Authors : Pascal Thubert Rahul Arvind Jadhav Matthew Gillmore Filename : draft-ietf-roll-dao-projection-14.txt Pages : 31 Date : 2020-10-02 Abstract: This document updates RFC 6550 to enable a RPL Root to install and maintain Projected Routes within its DODAG, along a selected set of nodes that may or may not include self, for a chosen duration. This potentially enables routes that are more optimized or resilient than those obtained with the classical distributed operation of RPL, either in terms of the size of a Routing Header or in terms of path length, which impacts both the latency and the packet delivery ratio. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-roll-dao-projection/ There is also a HTML versions available at: https://www.ietf.org/id/draft-ietf-roll-dao-projection-14.html A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-roll-dao-projection-14 Please note that it may take a couple of minutes from the time of submissio= n until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ _______________________________________________ Roll mailing list Roll@ietf.org https://www.ietf.org/mailman/listinfo/roll From nobody Sat Oct 3 19:31:28 2020 Return-Path: X-Original-To: roll@ietfa.amsl.com Delivered-To: roll@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 490913A0AB0 for ; Sat, 3 Oct 2020 19:31:26 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.899 X-Spam-Level: X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id fxXtC3kIbTwi for ; Sat, 3 Oct 2020 19:31:24 -0700 (PDT) Received: from tuna.sandelman.ca (tuna.sandelman.ca [IPv6:2607:f0b0:f:3:216:3eff:fe7c:d1f3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id B42E53A0AAF for ; Sat, 3 Oct 2020 19:31:24 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by tuna.sandelman.ca (Postfix) with ESMTP id CEF68389D2 for ; Sat, 3 Oct 2020 22:36:33 -0400 (EDT) Received: from tuna.sandelman.ca ([127.0.0.1]) by localhost (localhost [127.0.0.1]) (amavisd-new, port 10024) with LMTP id z4wkeiQ_HAaQ for ; Sat, 3 Oct 2020 22:36:33 -0400 (EDT) Received: from sandelman.ca (obiwan.sandelman.ca [209.87.249.21]) by tuna.sandelman.ca (Postfix) with ESMTP id 5D3E1389CF for ; Sat, 3 Oct 2020 22:36:33 -0400 (EDT) Received: from localhost (localhost [IPv6:::1]) by sandelman.ca (Postfix) with ESMTP id 62393A14 for ; Sat, 3 Oct 2020 22:31:23 -0400 (EDT) From: Michael Richardson To: Routing Over Low power and Lossy networks In-Reply-To: References: X-Mailer: MH-E 8.6+git; nmh 1.7+dev; GNU Emacs 26.1 X-Face: $\n1pF)h^`}$H>Hk{L"x@)JS7<%Az}5RyS@k9X%29-lHB$Ti.V>2bi.~ehC0; <'$9xN5Ub# z!G,p`nR&p7Fz@^UXIn156S8.~^@MJ*mMsD7=QFeq%AL4m Archived-At: Subject: Re: [Roll] RPL secure messages X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 04 Oct 2020 02:31:26 -0000 --=-=-= Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Pascal Thubert \(pthubert\) wrote: > The effort to standardize is small. The effort to implement is high. = By > putting something in the standards we are writing now we are giving a > sense that the function should be implemented, and that the secured > model is here to stay. If we do not provide the secured version we are > giving a sense that we are deprecating the function, and that it will > be gone in RPLv2. If we are honest, when we do RFC6550bis, we will deprecate all the secure versions, as they were never implemented. Until then, I am uncertain what to do. The secure functions are not implementable without rather fast assymetric crypto, and per-node certificates. (i.e. onboarding). {I said so back in 2010, and for my trouble wound up WG co-chair as punishm= ent.} Once we have capabilities, we could at that point, introduce secure versions again :-) =2D- Michael Richardson . o O ( IPv6 I=C3=B8T consulti= ng ) Sandelman Software Works Inc, Ottawa and Worldwide --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCgAdFiEEbsyLEzg/qUTA43uogItw+93Q3WUFAl95M/sACgkQgItw+93Q 3WXHwAgAwskKKtW+wV9q6ZFXOXjR0cdrz4JKQTIgH1aJsbMvx4y8Ym74JtiLsciI kFI5lJnCblobVvY5NOKp7kAkSaRFNk1DCZABLDotqEN91opuHIZAVfqAgAf1EeaP 81NfW07ugnpJHqs5MV2htnYbvuu41EYZICkGHOHe29tBmQvmE1NnbXG/zD9xtAeF TBLZuvv20BioEGRzhuLmZBu7hHuXs7Ht9AJZYg/mN9sZMd70ehAIVg19rduYnBUG ZFDO369Z74kb+JBOTZGENl3ld8V3LxE1S+2OJZbWsjNvCOuGgoh4fGOyuL7L8sSL RToMq8RNpnwme2H+x5VFry1hOOApDQ== =zu7y -----END PGP SIGNATURE----- --=-=-=-- From nobody Mon Oct 5 09:54:03 2020 Return-Path: X-Original-To: roll@ietfa.amsl.com Delivered-To: roll@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 6D6153A0E45 for ; 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Mon, 5 Oct 2020 16:53:54 +0000 From: "Pascal Thubert (pthubert)" To: Routing Over Low power and Lossy networks Thread-Topic: DAP projection vs. Useofrplinfo Thread-Index: AdabN1LrkbeVExKfQw2zJAEbicPckQ== Date: Mon, 5 Oct 2020 16:53:51 +0000 Deferred-Delivery: Mon, 5 Oct 2020 16:53:30 +0000 Message-ID: Accept-Language: fr-FR, en-US Content-Language: en-US X-MS-Has-Attach: yes X-MS-TNEF-Correlator: authentication-results: ietf.org; dkim=none (message not signed) header.d=none;ietf.org; dmarc=none action=none header.from=cisco.com; x-originating-ip: [2a01:cb1d:4ec:2200:d9f4:e7ad:f9ee:d26f] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: b2a45454-0557-4e68-b0a4-08d8694f3eb0 x-ms-traffictypediagnostic: MN2PR11MB3920: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:10000; x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: 915nt3g6CGxG4bcPfH/HWtaMUKHOq8R5qXbUEyeIl4DfUcMqmAZ0ZdqRIniW0c7h4cOZxEHZa+fBa2mK2dg+caXZm34ehx+lLnoPx/wW9HdLYBq5+mxKJKDMfBkqYI4ozjDjuXyBcZu1eOufNfKgo81DYQ+Og5HT/vDasUxsIc5BcsXZ5Ye+xak2xX2VtBYXEveM9VRDoEq1Y1oKm6jbX4N0Qg1Oq3HYE/3cgGElNcR+KUVuXvQwBBus3ITrAmHOLBlarw2+QT+PhvQaHiwIc0afLBQnP3Yv4rNjbLxBeZeOfXzuYWNRdIbmkTCHIwkmxPa8KZIGEOhpB57gvnaVyj5SJx7h08B76hWwJNZT4jP5nW12pxDN/uzn9BFk/MVqowLP4VSqgFBLAFBUuBsHvvOBQGyXqwIaDtY2qipNaN14jv+bwxsGqlIykeykFrojVDOVjnzSRT6yCnHQrpZa8g== x-forefront-antispam-report: CIP:255.255.255.255; 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boundary="_005_MN2PR11MB35650DE10D5CBB22FFDC2A68D80C0MN2PR11MB3565namp_"; type="multipart/alternative" MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: MN2PR11MB3565.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: b2a45454-0557-4e68-b0a4-08d8694f3eb0 X-MS-Exchange-CrossTenant-originalarrivaltime: 05 Oct 2020 16:53:54.6156 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 5ae1af62-9505-4097-a69a-c1553ef7840e X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: Jh9di6leqVPaw3+1aTtfc05ce0fFMvFtlAo6WeIW7hCydUAPlVhiiA44O77dS8IlifAyfnBpwjmSGxD1uW49lg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR11MB3920 X-OriginatorOrg: cisco.com X-Outbound-SMTP-Client: 173.36.7.14, xch-aln-004.cisco.com X-Outbound-Node: alln-core-3.cisco.com Archived-At: Subject: [Roll] DAP projection vs. Useofrplinfo X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 05 Oct 2020 16:54:02 -0000 --_005_MN2PR11MB35650DE10D5CBB22FFDC2A68D80C0MN2PR11MB3565namp_ Content-Type: multipart/alternative; boundary="_000_MN2PR11MB35650DE10D5CBB22FFDC2A68D80C0MN2PR11MB3565namp_" --_000_MN2PR11MB35650DE10D5CBB22FFDC2A68D80C0MN2PR11MB3565namp_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Dear all I added text in the Github repo of DAO projection to clarify the encapsulat= ion in case of a projected route. The text says " * This draft conforms the principles of [USEofRPLinfo] with regards to packet forwarding and encapsulation along a Track. - In that case, the Track is the DODAG, the Track Ingress is a RAL, and the Track Egress is the Root. - If the Track Ingress is the originator of the packet and the Track Egress is the destination of the packet, there is no need for an encapsulation. - But since the RPL Instance a Local one, the final destination in the outer header of a packet sent along a Track MUST be the Track Egress. So the Track Ingress MUST encapsulate its own traffic if the destination is reached over the Track via the Track Egress but is located beyond it (this is a MAY for a Global Instance in [USEofRPLinfo]) - Traffic that is injected in the Track is processed as external, so it is subject to encapsulation. " You'll note that a MAY (in RAL to Int) in fig 7 of useofrplinfo becomes a M= UST, because we need to signal the Track Egress. +---------------------+--------------+------------+----------------+ | Interaction between | Use Case |IPv6-in-IPv6|IPv6-in-IPv6 dst| +---------------------+--------------+------------+----------------+ | | RAL to root | No | N/A | + +--------------+------------+----------------+ | Leaf - Root | root to RAL | No | N/A | + +--------------+------------+----------------+ | | root to RUL | must | 6LR | + +--------------+------------+----------------+ | | RUL to root | must | root | +---------------------+--------------+------------+----------------+ | | RAL to Int | may | root | + +--------------+------------+----------------+ | Leaf - Internet | Int to RAL | must | RAL (tgt) | + +--------------+------------+----------------+ | | RUL to Int | must | root | + +--------------+------------+----------------+ | | Int to RUL | must | 6LR | +---------------------+--------------+------------+----------------+ | | RAL to RAL | No | N/A | | Leaf - Leaf +--------------+------------+----------------+ | | RAL to RUL | No(up) | N/A | | + +------------+----------------+ | | | must(down) | 6LR | | +--------------+------------+----------------+ | | RUL to RAL | must(up) | root | | | +------------+----------------+ | | | must(down) | RAL | | +--------------+------------+----------------+ | | RUL to RUL | must(up) | root | | | +------------+----------------+ | | | must(down) | 6LR | |---------------------+--------------+------------+----------------+ It's because the text in use of RPL info assumes that the RAL injects traff= ic in a global instance. Should we add a note for that case? The MAY is a MUST in a local instance. Keep safe. Pascal [https://www.cisco.com/c/dam/m/en_us/signaturetool/images/logo/Cisco_Logo_n= o_TM_Indigo_Blue-RGB_43px.png] Pascal Thubert PRINCIPAL ENGINEER.ENGINEERING pthubert@cisco.com Tel: +33 49 723 2634 cisco.com Cisco Systems, Inc. 45 All Des Ormes Regus Centre BP1200 06250 MOUGINS CEDEX France [http://www.cisco.com/assets/swa/img/thinkbeforeyouprint.gif] Think before you print. This email may contain confidential and privileged material for the sole us= e of the intended recipient. Any review, use, distribution or disclosure by= others is strictly prohibited. If you are not the intended recipient (or a= uthorized to receive for the recipient), please contact the sender by reply= email and delete all copies of this message. Please click here for Company Re= gistration Information. --_000_MN2PR11MB35650DE10D5CBB22FFDC2A68D80C0MN2PR11MB3565namp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Dear all

 

I added text in the Github repo of DAO projection to clarify= the encapsulation in case of a projected route.

The text says

“

*  This draft conforms the principles of [USEofRPLinfo]= with regards

      to packet forwarding and enca= psulation along a Track.

 

      -  In that case, the Tra= ck is the DODAG, the Track Ingress is a

         RAL, and th= e Track Egress is the Root.

 

      -  If the Track Ingress = is the originator of the packet and the

         Track Egres= s is the destination of the packet, there is no need

         for an enca= psulation.

 

      -  But since the RPL Ins= tance a Local one, the final destination

         in the oute= r header of a packet sent along a Track MUST be the

         Track Egres= s.  So the Track Ingress MUST encapsulate its own

         traffic if = the destination is reached over the Track via the<= /p>

         Track Egres= s but is located beyond it (this is a MAY for a

         Global Inst= ance in [USEofRPLinfo])

 

      -  Traffic that is injec= ted in the Track is processed as external,

         so it is su= bject to encapsulation.

“

 

You’ll note that a MAY (in RAL to Int) in fig 7 of use= ofrplinfo becomes a MUST, because we need to signal the Track Egress.<= /o:p>

 

 

 

+-------------------= --+--------------+------------+----------------+

   | Inter= action between |   Use Case   |IPv6-in-IPv6|IPv6-in-IPv= 6 dst|

   +------= ---------------+--------------+------------+----------------+

   | =             &nb= sp;       |  RAL to root |  &n= bsp; No      |      N/A&n= bsp;      |

   + =             &nb= sp;       +--------------+------------+------= ----------+

   | =     Leaf - Root     |  root to RAL = |    No      |   &nb= sp;  N/A       |

   + =             &nb= sp;       +--------------+------------+------= ----------+

   | =             &nb= sp;       | root to RUL  |   m= ust     |       6LR =      |

   + =             &nb= sp;       +--------------+------------+------= ----------+

   | =              &n= bsp;      | RUL to root  |   m= ust     |       root = ;    |

   +------= ---------------+--------------+------------+----------------+

   | =             &nb= sp;       |  RAL to Int  | &nb= sp; may      |      root&= nbsp;     |

   + =             &nb= sp;       +--------------+------------+------= ----------+

   | =   Leaf - Internet   |  Int to RAL  |   m= ust     |      RAL (tgt) |

   + =             &nb= sp;       +--------------+------------+------= ----------+

   | =             &nb= sp;       |  RUL to Int  | &nb= sp; must     |       root=      |

   + =             &nb= sp;       +--------------+------------+------= ----------+

   | =             &nb= sp;       |  Int to RUL  | &nb= sp; must     |       6LR&= nbsp;     |

   +------= ---------------+--------------+------------+----------------+

   | =             &nb= sp;       |  RAL to RAL  | &nb= sp;  No      |      = N/A       |

   | = Leaf - Leaf        +--------------+----= --------+----------------+

   | =             &nb= sp;       |  RAL to RUL  | &nb= sp;  No(up)  |      N/A   = ;    |

   | =             &nb= sp;       +     &nbs= p;        +------------+----------------= +

   | =             &nb= sp;       |      &nb= sp;       | must(down) |  &nbs= p;   6LR       |<= /font>

   | =             &nb= sp;       +--------------+------------+------= ----------+

   | =             &nb= sp;       |  RUL to RAL  | &nb= sp; must(up) |      root    &n= bsp; |

   | =             &nb= sp;       |     &nbs= p;        +------------+----------------= +

   | =             &nb= sp;       |     &nbs= p;        | must(down) |  &nbs= p;   RAL       |<= /font>

   | =             &nb= sp;       +--------------+------------+------= ----------+

   | =             &nb= sp;       |  RUL to RUL  | &nb= sp; must(up) |      root    &n= bsp; |

   | =             &nb= sp;       |     &nbs= p;        +------------+----------------= +

   | =             &nb= sp;       |     &nbs= p;        | must(down) |  &nbs= p;   6LR       |<= /font>

   |------= ---------------+--------------+------------+----------------+

 

 

It’s because the text in use of RPL info assumes that = the RAL injects traffic in a global instance. Should we add a note for that= case?

The MAY is a MUST in a local instance.

 

Keep safe.

 

Pascal

 

 

 

3D"https://www.cisco.com/c/dam/m/en_us/signaturetool/images/logo/Cisc=

Pascal Thubert<= /p>

PRINCIPAL ENGINEER.ENGINEERING

pthubert@cisco.com<= /span>

Tel: +33 49 723 2634

 cisco.com

Cisco Systems, Inc.

45 All Des Ormes Regus Centre

BP1200

06250 MOUGINS CEDEX

France

3D"http://www.cisco.com/assets/swa/img/thinkbeforeyoupri=

Think before you print.

This email may contain confidentia= l and privileged material for the sole use of the intended recipient. Any review, use, distribution or disclosure by others is strict= ly prohibited. If you are not the intended recipient (or authorized to rece= ive for the recipient), please contact the sender by reply email and delete= all copies of this message.

Please click here for Company Registration Information.

 

 

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List-Help: List-Subscribe: , X-List-Received-Date: Tue, 06 Oct 2020 18:00:55 -0000 Pascal: Hi! I'm including 3 different sections below. (1) Inline comment to your response to my review (of -18). (2) Some additional nits on -21. (3) You didn't reply past the initial comment in =C2=A75, which makes me th= ink =C2=A0 =C2=A0 that your email client truncated my message. :-( =C2=A0[I've = seen this happen =C2=A0 =C2=A0 many times before, specially when the receiver is using Outlo= ok. =C2=A0Please =C2=A0 =C2=A0 take a look at the archive just in case.] =C2=A0I am includin= g the comments =C2=A0 =C2=A0 starting in =C2=A75 (based on -18). =C2=A0The sections don't = match to -21, but I'll =C2=A0 =C2=A0 leave that exercise to you. ;-) About Updates: 6550... Thanks! Alvaro. =C2=A0=3D=3D=3D Part 1: comments on your review =3D=3D=3D On September 18, 2020 at 10:00:30 AM, Pascal Thubert wrote: ... > > 440 4. Updating RFC 6550 ... > > 442 This document specifies a new behavior whereby a 6LR injects DAO > > 443 messages for unicast addresses (see Section 10) and multicast > > 444 addresses (see Section 11) on behalf of leaves that are not aware o= f > > 445 RPL. The RUL addresses are exposed as external targets [RFC6550]. > > 446 Conforming [USEofRPLinfo], an IP-in-IP encapsulation between the 6L= R > > 447 and the RPL Root is used to carry the RPL artifacts and remove them > > 448 when forwarding outside the RPL domain, e.g., to a RUL. > > > > > > > [] Is there anything in rfc6550 that limits the source of the routing > > information in the DAOs? It seems to me that rfc6550 already allows > > external information to be injected in the network...so getting it from= a > > RUL doesn't sound like an Update to me. > > > > True, that is not why we have the updates. See sections "Updated RPL Stat= us > " and "Updated RPL Target Option" ...but this text is in the section titled "Updating RFC 6550". Perhaps this section should be titled "Changes/Enhancements/? to rfc6550" -- and then the subsections can explicitly spell out the Updates. =C2=A0[Assuming that change, I won't make the same comment on the other pieces of this section.] This clear differentiation between items that are changes/enhancements, and ones that represent a formal Update is what I want to see clarified. =C2=A0=3D=3D=3D Part 2: Additional comments based on -21 =3D=3D=3D [Line numbers from idnits.] ... 99 1. =C2=A0Introduction ... 140 =C2=A0 In that mode, IPv6 addresses are advertised individually as Hos= t 141 =C2=A0 routes. =C2=A0Some nodes may act as Routers and participate to = the 142 =C2=A0 forwarding operations whereas others will only terminate packet= s, 143 =C2=A0 acting as Hosts in the data-plane. =C2=A0In [RFC6550] terms, an= IPv6 Host 144 =C2=A0 [RFC8504] that is reachable over the RPL network is called a Le= af. [nit] s/participate to/participate in/g ... 188 =C2=A0 * =C2=A0Section 6, Section 7, and Section 8 present the additio= ns made to 189 =C2=A0 =C2=A0 =C2=A0[RFC6550], [EFFICIENT-NPDAO], and [RFC8505]. [] "additions" =C2=A0Changes/extensions/updates?? =C2=A0=3D=3D=3D Part 3: remaining comments (based on -18) =3D=3D=3D ... 484 5. =C2=A0Updating draft-ietf-roll-efficient-npdao [major] To me, Updating an RFC means that the implementations of that RFC should also implement this one. =C2=A0In this case, there would be an expectation that all nodes that support the DCO would support the Non-Storing MOP as well. =C2=A0Is that what is intended? Note that Updating is different than simply expecting the nodes that implement this specification to comply. [Personal opinion: I don't think a formal Update of draft-ietf-roll-efficient-npdao is needed. =C2=A0As mentioned below, this document "extends"...] 486 =C2=A0[EFFICIENT-NPDAO] defines the DCO for RPL Storing Mode only, wit= h a 487 =C2=A0link-local scope. =C2=A0This specification extends its use to th= e Non- 488 =C2=A0Storing MOP, whereby the DCO is sent unicast by the Root directl= y to 489 =C2=A0the RAN that injected the DAO message for the considered target. 491 =C2=A0This specification leverages the DCO between the Root and the 6L= R 492 =C2=A0that serves as attachment router for a RUL. [] Just another piece of information: draft-ietf-roll-efficient-npdao already "assumes that all the 6LRs in the network support this specification". =C2=A0draft-ietf-roll-efficient-npdao did not Update rfc6550, so it is not expected that "basic" RPL nodes would know what the DCO is... [major] Regardless of whether this document Updates NPDAO or not, some text should be added related to the possibility that not all nodes may know what the DCO is. =C2=A0See =C2=A710.2.3. 494 6. =C2=A0Updating RFC 8505 [major] To me, Updating an RFC means that the implementations of that RFC should also implement this one. =C2=A0In this case, there would be an expectation that all 6LRs would support the change. =C2=A0Is that what is intended? Note that Updating is different than simply expecting the nodes that implement this specification to comply...in this case, *if* "the RPL Root advertise[s] the capability...". [Personal opinion: rfc8505 applies to 6LRs in general, not just RPL routers in particular...so I think that Updating it is not the right choice.] 496 =C2=A0This document updates [RFC8505] to change the behavior of a RPL 497 =C2=A0Router acting as 6LR in the 6LoWPAN ND Address Registration of a= RUL 498 =C2=A0acting as 6LN. =C2=A0If the RPL Root advertise the capability to= proxy the 499 =C2=A0EDAR/EDAC exchange to the 6LBR, the 6LR refrains from sending th= e 500 =C2=A0keep-alive EDAR message. =C2=A0Instead, if it is separated from = the 6LBR, 501 =C2=A0the Root regenerates the EDAR message to the 6LBR periodically, = upon 502 =C2=A0a DAO message that signals the liveliness of the Address. [nit] s/Root advertise/Root advertises [] See the comment in =C2=A78 about a separate reason to Update rfc8505 and= rfc6775. ... 510 7.1. =C2=A0Support of 6LoWPAN ND 512 =C2=A0In order to obtain routing services from a 6LR, a RUL MUST imple= ment 513 =C2=A0[RFC8505] and set the "R" and "T" flags in the EARO. =C2=A0The R= UL SHOULD 514 =C2=A0support [AP-ND] to protect the ownership of its addresses. =C2= =A0The RUL 515 =C2=A0MUST NOT request routing services from a 6LR that does not origi= nate 516 =C2=A0RA messages with a CIO that has the L, P, and E flags all set as 517 =C2=A0discussed in Section 3.3.1, unless configured to do so. [major] I may be lost already... =C2=A0A RUL is by definition RPL-unaware. It then follows that a RUL can't be assumed to be aware of this specification, right? =C2=A0If so, then all the Normative language used in this section can't be used because we can't specify the behavior of a node that (by definition) is not aware of this document. =C2=A0[See more related comments below.] Note that =C2=A71 defines a RUL this way: "A RUL is an IPv6 Host [RFC8504] that needs a RPL-Aware Router to obtain routing services over the RPL network." [major] "The RUL SHOULD support [AP-ND] to protect the ownership of its addresses." =C2=A0 When it is ok for the RUL not to support AP-ND? IOW, why is the support only recommended and not required? ... 523 =C2=A0Parallel Address Registrations to several 6LRs SHOULD be perform= ed in 524 =C2=A0an rapid sequence, using the exact same EARO for the same Addres= s. 525 =C2=A0Gaps between the Address Registrations will invalidate some of t= he 526 =C2=A0routes till the Address Registration finally shows on those rout= es. [nit] s/an rapid sequence/rapid sequence [nit] s/the exact same EARO/the same EARO [major] How fast is in "rapid sequence"...how big can "gaps" be? =C2=A0If using Normative language, then the text needs to be specific. 528 =C2=A0[RFC8505] introduces error Status values in the NA(EARO) which c= an be 529 =C2=A0received synchronously upon an NS(EARO) or asynchronously. =C2= =A0The RUL 530 =C2=A0MUST support both cases and MUST refrain from using the address = when 531 =C2=A0the Status Value indicates a rejection. [major] "MUST support both cases and MUST refrain" =C2=A0Isn't this behavior already specified in rfc8505? =C2=A0We shouldn't use normative language in that case (unless you are quoting directly). [major] I didn't find a "rejection" Status Value. =C2=A0I'm assuming you're referring to a group of values: Duplicate Address, Moved, etc.. Please be explicit. 533 7.2. =C2=A0External Routes and RPL Artifacts 535 =C2=A0Section 4.1 of [USEofRPLinfo] provides a set of rules detailed b= elow 536 =C2=A0that MUST be followed for routing packets from and to a RUL. [major] Because the specification is in USEofRPLinfo already, then there's no need to normatively require it here as well. =C2=A0Also, not all the actions in =C2=A74.1/USEofRPLinfo are required, some are just recommended, so there would be a Normative conflict. =C2=A0 s/MUST/must ... 554 =C2=A0The RPL data packets always carry a Hop-by-Hop Header to transpo= rt a 555 =C2=A0RPL Packet Information (RPI) [RFC6550]. =C2=A0So unless the RUL = originates 556 =C2=A0its packets with an RPI, the 6LR needs to tunnel them to the Roo= t to 557 =C2=A0add the RPI. =C2=A0As a rule of a thumb and except for the very = special 558 =C2=A0case above, the packets from and to a RUL are always encapsulate= d 559 =C2=A0using an IP-in-IP tunnel between the Root and the 6LR that serve= s the 560 =C2=A0RUL (see sections 7.1.4, 7.2.3, 7.2.4, 7.3.3, 7.3.4, 8.1.3, 8.1.= 4, 561 =C2=A08.2.3, 8.2.4, 8.3.3 and 8.3.4 of [USEofRPLinfo] for details). [minor] Listing all these sections may be prone to errors or inconsistency. =C2=A0What about =C2=A77.1.3/=C2=A78.3.2? =C2=A0 Maybe simpl= y "see [USEofRPLinfo] for details" is better. 563 =C2=A0In Non-Storing Mode, packets going down carry a Source Routing H= eader 564 =C2=A0(SRH). =C2=A0The IP-in-IP encapsulation, the RPI and the SRH are 565 =C2=A0collectively called the "RPL artifacts" and can be compressed us= ing 566 =C2=A0[RFC8138]. =C2=A0Figure 10 presents an example compressed format= for a 567 =C2=A0packet forwarded by the Root to a RUL in a Storing Mode DODAG. [minor] s/Figure 10/Appendix A ... 576 =C2=A0A RUL is not expected to support the compression method defined = in 577 =C2=A0[RFC8138]. =C2=A0Unless configured otherwise, the border router = MUST 578 =C2=A0restore the outgoing packet before forwarding over an external r= oute, 579 =C2=A0even if it is not the destination of the incoming packet, and ev= en 580 =C2=A0when delivering to a RUL. [minor] s/restore/uncompress [major] "the border router MUST restore the outgoing packet before forwarding over an external route, even if it is not the destination of the incoming packet" USEofRPLinfo already specifies this behavior, so please don't specify it again. =C2=A0Also, the language of "even if it is not the destination" made me think twice about complying with rfc8200. =C2=A0Maybe better to describe the behavior in the same way that USEofRPLinfo does. Suggestion> =C2=A0 =C2=A0A RUL is not expected to support the compression method define= d in =C2=A0 =C2=A0[RFC8138]. =C2=A0The border router uncompresses the packet bef= ore forwarding =C2=A0 =C2=A0over an external route to a RUL [USEofRPLinfo]. ... 608 8. =C2=A0Updated RPL Status ... 623 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0T= able 1: RPL Status per RFC 6550 [minor] Please add a table (later in this section) showing the updated RPL Status...along with a forward reference to the IANA Considerations sub-section where the new registry is created. [] BTW, this change should formally Update rfc6500. 625 =C2=A0The 6LoWPAN ND Status was defined for use in the EARO and the 626 =C2=A0currently defined values are listed in table 1 of [RFC8505]. =C2= =A0This 627 =C2=A0specification enables to carry the 6LoWPAN ND Status values in R= PL 628 =C2=A0DAO and DCO messages, embedded in the RPL Status field. [minor] "the currently defined values are listed in table 1 of [RFC8505]" Given that the registry is being modified, and that other values may be added...it doesn't seem like a good idea to point at "currently defined values". =C2=A0Please take out that part of the sentence. 630 =C2=A0To achieve this, Section 13.2 reduces the range of the EARO Stat= us 631 =C2=A0values to 0-63 to ensure that they fit within a RPL Status as sh= own 632 =C2=A0in Figure 3. [major] "Section 13.2 reduces the range" =C2=A713.2 is part of the IANA Considerations, which reflects what is specified elsewhere. =C2=A0IOW, specify the reduced range elsewhere (here?). Suggestion> =C2=A0 =C2=A0To achieve this, the range of the EARO Status values is reduce= d to 0-63. =C2=A0 =C2=A0This reduction ensures that the values fit within a RPL Status= as shown in =C2=A0 =C2=A0Figure 3. [major] What about the ARO? =C2=A0The Status values are shared between the EARO and the ARO. [major] Changing the range of values is not as easy as updating the registry...the behavior of the EARO and ARO have to be updated. =C2=A0This means that this document should Update both rfc6775 and rfc8505 where it relates to the redefined Status field. The E/A flags (below) don't seem to apply to the ARO/EARO, so a specification of the behavior is needed; something like "ignore the first two bits". 634 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A00 1 2 3 4 5 6 7 635 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 +-+-+-+-+-+-+-+-+ 636 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 |E|A| =C2=A0Value =C2=A0 =C2=A0| 637 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 +-+-+-+-+-+-+-+-+ ... 643 =C2=A0E: =C2=A01-bit flag. =C2=A0Set to indicate a rejection. =C2=A0Wh= en not set, a value 644 =C2=A0 =C2=A0 of 0 indicates Success/Unqualified acceptance and other = values 645 =C2=A0 =C2=A0 indicate "not an outright rejection" as per RFC 6550. [minor] "When not set, a value of 0...and other values..." =C2=A0This is just one bit, so there are only two values, not "other values". ;-) You obviously mean "a value of 0...and other values of the RPL Status". s/a value of 0/an RPL Status value of 0 [major] ""not an outright rejection" as per RFC 6550" =C2=A0rfc6550 differentiated between a "rejection" and "not an outright rejection". Is the intent for the rejection codes to reflect that difference (at some point), or is the ability to signal the difference lost? ... 649 =C2=A0Status Value: =C2=A06-bit unsigned integer. =C2=A0If the 'A' fla= g is set this 650 =C2=A0 =C2=A0 field transports a Status Value defined for IPv6 ND EARO= . =C2=A0When 651 =C2=A0 =C2=A0 the 'A' flag is not set, the Status Value is defined for= RPL. [major] This change in the RPL Status format should be a formal Update of rfc6550. 653 =C2=A0When building a DCO or a DAO-ACK message upon an IPv6 ND NA or a= EDAC 654 =C2=A0message, the RPL Root MUST copy the 6LoWPAN ND Status unchanged = in 655 =C2=A0the RPL Status and set the 'A' bit. =C2=A0The RPL Root MUST set = the 'E' 656 =C2=A0flag for Values in range 1-10 which are all considered rejection= s. [nit] s/'A' bit/'A' flag [major] What should the receiver do if the corresponding 6LoWPAN ND Status is unknown? =C2=A0Or does it matter? =C2=A0I'm wondering if "MUST" i= s the right requirement, or if should be "SHOULD"... [major] What should a receiver do if the E flag is not set for "Values in range 1-10"? [major] For future rejection-related values, the E flag has to also be set, right? =C2=A0How can we word the specification so that we don't depend on future specification saying that the E flag has to be set? =C2=A0I worry that not all the status codes use the work "rejection", even if their description (rfc8505) can be interpreted as such. =C2=A0Maybe something like this: =C2=A0 =C2=A0The RPL Root MUST set the 'E' flag for all rejection Values. = =C2=A0The Status =C2=A0 =C2=A0Codes in range 1-10 [rfc8505] are all considered rejections. 658 =C2=A0Reciprocally, upon a DCO or a DAO-ACK message from the RPL Root = with 659 =C2=A0a RPL Status that has the 'A' bit set, the 6LR MUST copy the RPL 660 =C2=A0Status Value unchanged in the Status field of the EARO when 661 =C2=A0generating an NA to the RUL. [major] "MUST copy the RPL Status Value unchanged" =C2=A0 Even if the value is unknown? 663 9. =C2=A0Updated RPL Target Option ... 679 =C2=A0With this specification the ROVR is the remainder of the RPL Tar= get 680 =C2=A0Option. =C2=A0The size of the ROVR is indicated in a new ROVR Si= ze field 681 =C2=A0that is encoded to map one-to-one with the Code Suffix in the ED= AR 682 =C2=A0message (see table 4 of [RFC8505]). [nit] "ROVR Size field" =C2=A0 The field is called ROVRsz. =C2=A0To be consistent, perhaps describe the field (below) as "ROVRsz (ROVR Size):" [?] Why is the size of the ROVR needed? =C2=A0It can be figured out from the setting of the F flag and the Option and Prefix Lengths. =C2=A0Just curious. 684 =C2=A0The modified format is illustrated in Figure 4. =C2=A0It is back= ward 685 =C2=A0compatible with the Target Option in [RFC6550] and SHOULD be use= d as 686 =C2=A0a replacement in new implementations even for Storing Mode opera= tions 687 =C2=A0in preparation for upcoming security mechanisms based in the ROV= R. [nit] s/modified format/updated format [nit] s/based in/based on [major] "It is backward compatible..." True, but what about "forward" compatible? =C2=A0If the F flag is not set, how does a receiver know that this is the updated Option? =C2=A0Is there a chance of spurious information (in either the flag or the ROVRsz) to be present and cause the receiver to misinterpret the information? =C2=A0I know that rfc6550 specifies that the "field MUST be initialized to zero by the sender and MUST be ignored by the receiver"...but I just want to test the edges. This forward compatibility may be a reason to formally Update rfc6550. [major] "SHOULD be used as a replacement in new implementations" Referring to =C2=A74 (Updating RFC 6550) and my comments there about Updating... If this change is an Update -- meaning that all RPL nodes must support it --, when would it be ok to not use it? =C2=A0IOW, why is it a recommendation and not a requirement. OTOH, the modification is backwards compatible...so only the nodes that need to understand the change need to implement it. [major] "...in preparation for upcoming security mechanisms" What it that? =C2=A0If support is required for a different specification, what is it? =C2=A0 It seems to me that recommending the use in preparation for something in the future is not appropriate in a specification without an explicit reference. 689 =C2=A0 =C2=A0 0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 1 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= 2 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 3 690 =C2=A0 =C2=A0 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 = 8 9 0 1 691 =C2=A0 =C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-= +-+-+-+-+ 692 =C2=A0 =C2=A0 | =C2=A0 Type =3D 0x05 | Option Length |ROVRsz |F|Flags|= Prefix Length | 693 =C2=A0 =C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-= +-+-+-+-+ 694 =C2=A0 =C2=A0 | =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 | 695 =C2=A0 =C2=A0 | =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0Target Prefix (Variable Length) =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0| 696 =C2=A0 =C2=A0 . =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 . 697 =C2=A0 =C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-= +-+-+-+-+ 698 =C2=A0 =C2=A0 | =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 | 699 =C2=A0 =C2=A0... =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Registration= Ownership Verifier (ROVR) =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 ... 700 =C2=A0 =C2=A0 | =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 | 701 =C2=A0 =C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-= +-+-+-+-+ 703 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = Figure 4: Updated Target Option [nit] Align the bit numbers: =C2=A0 =C2=A0 =C2=A0 0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 1 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= 2 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 3 =C2=A0 =C2=A0 =C2=A0 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 = 7 8 9 0 1 =C2=A0 =C2=A0 =C2=A0+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+= -+-+-+-+-+ 705 =C2=A0New fields: 707 =C2=A0ROVRsz: =C2=A0Indicates the Size of the ROVR. =C2=A0It MAY be 1,= 2, 3, or 4, 708 =C2=A0 =C2=A0 denoting a ROVR size of 64, 128, 192, or 256 bits, respe= ctively. [major] s/MAY be 1, 2, 3, or 4/MUST be 1, 2, 3, or 4 It is not optional to use those values, they are the only ones. [?] Why are 4 bits needed if there are only 4 values? =C2=A0Why not just us= e 3? [major] What should the receiver do if a different value is used? 710 =C2=A0F: =C2=A01-bit flag. =C2=A0Set to indicate that Target Prefix fi= eld contains an 711 =C2=A0 =C2=A0 Address of prefix advertiser in full. [minor] To be in sync with the Registry in =C2=A715: s/F:/F (Advertiser Address in Full): ... 716 10. =C2=A0Protocol Operations for Unicast Addresses 718 =C2=A0The description below assumes that the Root sets the "P" flag in= the 719 =C2=A0DODAG Configuration Option and performs the EDAR proxy operation= . [major] Where is the "P" flag defined? =C2=A0I didn't find it in this draft= . ... 726 10.1. =C2=A0General Flow [minor] It would be very nice if at the start of this sub-section a note mentioned the fact that =C2=A710.2 contains the detailed operation. That would help the linear reader (like me!) time in trying to figure out the details. ;-) [minor] Also, it would be great if this overview had forward references to where the detail is provided. ... 775 =C2=A0On the first Address Registration, illustrated in Figure 5 for R= PL 776 =C2=A0Non-Storing Mode, the Extended Duplicate Address exchange takes = place 777 =C2=A0as prescribed by [RFC8505]. =C2=A0If the exchange fails, the 6LR= returns 778 =C2=A0an NA message with a negative status to the 6LN, the NCE is not 779 =C2=A0created and the address is not injected in RPL. =C2=A0If it is s= uccessful, 780 =C2=A0the 6LR creates an NCE and injects the Registered Address in the= RPL 781 =C2=A0routing using a DAO/DAO-ACK exchange with the RPL DODAG Root. [major] "the Extended Duplicate Address exchange takes place as prescribed by [RFC8505]" =C2=A0 Yes, except that NA is delayed until after the RPL registration is completed. =C2=A0(See related comments in =C2=A710.= 2.2 below.) [nit] s/created and/created, and 783 =C2=A0An issue may be detected later, e.g., the address moves within t= he 784 =C2=A0LLN or to a different Root on a backbone [6BBR]. =C2=A0In that c= ase the 785 =C2=A0value of the status that indicates the issue can be passed from 786 =C2=A06LoWPAN ND to RPL and back as illustrated in Figure 6. [minor] "backbone router" is not used anywhere else. =C2=A0Do we need to introduce this term and reference here? =C2=A0It seems like an unnecessary reference to me. [nit] s/In that case/In that case, [nit] s/back as/back, as ... 800 =C2=A0An Address re-Registration is performed by the 6LN to maintain t= he 801 =C2=A0NCE in the 6LR alive before lifetime expires. =C2=A0Upon the ref= resh of an 802 =C2=A0Address re-Registration, as illustrated in Figure 7, the 6LR inj= ects 803 =C2=A0the Registered Address in RPL. [nit] s/before lifetime/before the lifetime [major] Under what circumstances does the process in Figure 7 apply? I'm assuming that only if the registration hasn't expired, is that true? =C2=A0If the registration already expired, should the whole process (Figure 5) be repeated? =C2=A0I see mention of (re)registration in =C2=A710= .2.1, but none in =C2=A710.2.2. 805 =C2=A0 =C2=A0 =C2=A0 =C2=A0 6LN/RUL =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A06LR =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Root =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 6LBR 806 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | 807 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 NS(EARO) =C2=A0 =C2= =A0 | =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | 808 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0|--------------->| =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| 809 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0DAO =C2=A0 =C2=A0 | =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | 810 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 =C2=A0|------------->| =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | 811 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0| =C2=A0 =C2=A0 =C2=A0 EDAR =C2=A0 =C2=A0 =C2=A0 =C2=A0| 812 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0|------------------>| 813 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0| =C2=A0 =C2=A0 =C2=A0 EDAC =C2=A0 =C2=A0 =C2=A0 =C2=A0| 814 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0|<------------------| 815 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0DAO-ACK =C2=A0 | =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | 816 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 =C2=A0|<-------------| =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | 817 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 NA(EARO) =C2=A0 =C2= =A0 | =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | 818 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0|<---------------| =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 | [nit] A "|" is missing under the Root. ... 828 =C2=A0The 6LR may receive a requested DAO-ACK after it received an 829 =C2=A0asynchronous DCO, but the negative Status in the DCO supersedes = a 830 =C2=A0positive Status in the DAO-ACK regardless of the order in which = they 831 =C2=A0are received. =C2=A0Upon the DAO-ACK - or the DCO if one arrives= first - 832 =C2=A0the 6LR responds to the RUL with an NA(EARO). [major] "the negative Status in the DCO supersedes a positive Status in the DAO-ACK regardless of the order in which they are received" I don't remember anything like this in draft-ietf-roll-efficient-npdao. =C2=A0Should something be mentioned? =C2= =A0The ability of a parent to send an unsolicited DCO seems to fall in the same category: the DAO-ACK doesn't matter if the DCO was received first... I'm assuming the DCO negative status in this case has some type of expiration time, right? =C2=A0I'm thinking of the case where a problem did occur, but on a retry there is success...?? This property of the DCO allows a rogue node to invalidate a registration. =C2=A0Something similar to this text from draft-ietf-roll-efficient-npdao should be included in the Security Considerations section: =C2=A0 =C2=A0This document introduces the ability for a common ancestor nod= e to =C2=A0 =C2=A0invalidate a route on behalf of the target node. =C2=A0The com= mon ancestor =C2=A0 =C2=A0node could be directed to do so by the target node using the '= I' flag =C2=A0 =C2=A0in DCO's Transit Information Option. =C2=A0However, the common= ancestor =C2=A0 =C2=A0node is in a position to unilaterally initiate the route inval= idation =C2=A0 =C2=A0since it possesses all the required state information, namely,= the =C2=A0 =C2=A0Target address and the corresponding Path Sequence. =C2=A0Thus= a rogue =C2=A0 =C2=A0common ancestor node could initiate such an invalidation and i= mpact =C2=A0 =C2=A0the traffic to the target node. 834 =C2=A0The RUL MAY terminate the registration at any time by using a 835 =C2=A0Registration Lifetime of 0. =C2=A0This specification requires th= at the RPL 836 =C2=A0Target Option transports the ROVR. =C2=A0This way, the same flow= as the 837 =C2=A0heartbeat flow is sufficient to inform the 6LBR using the Root a= s 838 =C2=A0proxy as illustrated in Figure 7. [major] s/MAY/may =C2=A0 In this case, the sentence is just pointing at a fact, not making a normative statement. [nit] s/proxy as/proxy, as 840 =C2=A0Any combination of the logical functions of 6LR, Root and 6LBR m= ight 841 =C2=A0be collapsed in a single node. [nit] s/Root and/Root, and 843 10.2. =C2=A0Detailed Operation 845 10.2.1. =C2=A0Perspective of the RUL Acting as 6LN 847 =C2=A0This specification does not alter the operation of a 6LoWPAN ND- 848 =C2=A0compliant 6LN, and a RUL is expected to operate as follows: [minor] s/6LN, and a RUL /6LN/RUL, which 850 =C2=A01. =C2=A0The 6LN obtains an IPv6 global address, either using St= ateless 851 =C2=A0 =C2=A0 =C2=A0Address Autoconfiguration (SLAAC) [RFC4862] based = on a Prefix 852 =C2=A0 =C2=A0 =C2=A0Information Option (PIO) [RFC4861] found in an RA = message, or 853 =C2=A0 =C2=A0 =C2=A0some other means such as DHCPv6 [RFC3315]. [nit] s/means such/means, such [major] s/RFC3315/RFC8415 855 =C2=A02. =C2=A0Once it has formed an address, the 6LN (re)registers it= s address 856 =C2=A0 =C2=A0 =C2=A0periodically, within the Lifetime of the previous = Address 857 =C2=A0 =C2=A0 =C2=A0Registration, as prescribed by [RFC6775], to refre= sh the NCE 858 =C2=A0 =C2=A0 =C2=A0before the lifetime indicated in the EARO expires.= =C2=A0It MUST set 859 =C2=A0 =C2=A0 =C2=A0the "T" flag and the TID is incremented each time = and wraps in a 860 =C2=A0 =C2=A0 =C2=A0lollipop fashion (see section 5.2.1 of [RFC8505] w= hich is fully 861 =C2=A0 =C2=A0 =C2=A0compatible with section 7.2 of [RFC6550]). [minor] s/It MUST set the "T" flag and the TID is incremented/It MUST set the "T" flag. =C2=A0The TID is incremented [nit] s/[RFC8505] which/[RFC8505], which 863 =C2=A03. =C2=A0As stated in section 5.2 of [RFC8505], the 6LN can regi= ster to 864 =C2=A0 =C2=A0 =C2=A0more than one 6LR at the same time. =C2=A0In that = case, it uses the 865 =C2=A0 =C2=A0 =C2=A0same EARO for all of the parallel Address Registra= tions. =C2=A0The 6LN 866 =C2=A0 =C2=A0 =C2=A0SHOULD send the registration(s) that have a non-ze= ro Registration 867 =C2=A0 =C2=A0 =C2=A0Lifetime and ensure that one succeeds before it te= rminates other 868 =C2=A0 =C2=A0 =C2=A0registrations, to maintain the state in the networ= k and at the 869 =C2=A0 =C2=A0 =C2=A06LBR and minimize the churn. [major] "The 6LN SHOULD send the registration(s) that have a non-zero Registration Lifetime..." It sounds as if you're trying to specify what the value of the Registration Lifetime should be. =C2=A0If so: s/that have a non-zero/with a non-zero What are the cases when it is ok to not use a non-zero value? =C2=A0IOW, why is it recommended and not required? =C2=A0rfc8505 talks about setting the Registration Lifetime to 0, which brings me to: it seems to me that the Normative language may be out of place since the specification is already made in rfc8505. =C2=A0?? 871 =C2=A04. =C2=A0Following section 5.1 of [RFC8505], a 6LN acting as a R= UL sets 872 =C2=A0 =C2=A0 =C2=A0the "R" flag in the EARO of at least one registrat= ion, whereas 873 =C2=A0 =C2=A0 =C2=A0acting as a RAN it never does. =C2=A0If the "R" fl= ag is not echoed in 874 =C2=A0 =C2=A0 =C2=A0the NA, the RUL SHOULD attempt to use another 6LR.= =C2=A0The RUL 875 =C2=A0 =C2=A0 =C2=A0SHOULD send the registration(s) with the "R" flag = set and ensure 876 =C2=A0 =C2=A0 =C2=A0that one succeeds before it sends the registration= s with the flag 877 =C2=A0 =C2=A0 =C2=A0reset. =C2=A0In case of a conflict with the precee= ding rule on 878 =C2=A0 =C2=A0 =C2=A0lifetime, the rule on lifetime has precedence. [nit] "6LN acting as a RUL" =C2=A0The title of this section is "Perspective of the RUL Acting as 6LN", which one is it? ;-) [minor] "whereas acting as a RAN it never does" =C2=A0 rfc8505 says this: "A 6LR that manages its reachability SHOULD NOT set the R flag". "SHOULD NOT" doesn't imply never. [minor] "If the "R" flag is not echoed in the NA..." =C2=A0I didn't find in rfc8505 where echoing the R flag is discussed. =C2=A0But =C2=A710.2.2 requi= res the R flag set...is that where the specification is? [major] "SHOULD send the registration(s) with the "R" flag set and ensure that one succeeds before it sends the registrations with the flag reset." This text is in conflict with =C2=A75.1/rfc8505: "MUST set the R flag to indicate that it is not a router and that it will not handle its own reachability". =C2=A0There isn't a provision for a RUL to not set the R flag. [nit] s/preceeding/preceding 880 =C2=A05. =C2=A0The 6LN may use any of the 6LRs to which it registered = as default 881 =C2=A0 =C2=A0 =C2=A0gateway. =C2=A0Using a 6LR to which the 6LN is not= registered may 882 =C2=A0 =C2=A0 =C2=A0result in packets dropped at the 6LR by a Source A= ddress 883 =C2=A0 =C2=A0 =C2=A0Validation function (SAVI) so it is NOT RECOMMENDE= D. [nit] s/as default/as the default [minor] Please add an Informative reference to SAVI. [major] s/NOT RECOMMENDED/not recommended This text is not specifying normative behavior related to interoperability. 885 =C2=A0Even without support for RPL, a RUL may be aware of opaque value= s to 886 =C2=A0be provided to the routing protocol. =C2=A0If the RUL has a know= ledge of 887 =C2=A0the RPL Instance the packet should be injected into, then it SHO= ULD 888 =C2=A0set the Opaque field in the EARO to the RPLInstanceID, else it M= UST 889 =C2=A0leave the Opaque field to zero. [nit] s/has a knowledge/has knowledge [major] If a RUL is *unaware* by definition, I don't see how this paragraph can fit in this specification...especially because it seems to be speculating about potential knowledge ("may be aware of opaque values")... =C2=A0What do we call a RUL that has partial knowledge? 891 =C2=A0Regardless of the setting of the Opaque field, the 6LN MUST set = the 892 =C2=A0"I" field to zero to signal "topological information to be passe= d to 893 =C2=A0a routing process" as specified in section 5.1 of [RFC8505]. [nit] s/process" as/process", as 895 =C2=A0A RUL is not expected to produce RPL artifacts in the data packe= ts, 896 =C2=A0but it MAY do so. =C2=A0For instance, if the RUL has a minimal a= wareness 897 =C2=A0of the RPL Instance then it can build an RPI. =C2=A0A RUL that p= laces an 898 =C2=A0RPI in a data packet MUST indicate the RPLInstanceID of the RPL 899 =C2=A0Instance where the packet should be forwarded. =C2=A0All the fla= gs and the 900 =C2=A0Rank field are set to zero as specified by section 11.2 of [RFC6= 550]. [major] s/MAY/may =C2=A0 In this case, the text is just expressing a fact, not a Normative action. [nit] s/has a minimal/has minimal [major] The Normative text in this paragraph is equivalent to the one above (two paragraphs up)...please avoid duplication/redundancy. [major] "A RUL that places an RPI in a data packet MUST indicate the RPLInstanceID of the RPL Instance where the packet should be forwarded." So...even if we leave the *unaware* nature of a RUL out...this text means that any leaf can inject traffic onto an RPL Instance, just by knowing the ID (or even guessing it). =C2=A0Please add some text in the Security Considerations about how the rfc6553 considerations apply here too. 902 10.2.2. =C2=A0Perspective of the Border Router Acting as 6LR [nit] How else would a Border Router act as? [] This terminology of "acting as" is confusing... 904 =C2=A0Also as prescribed by [RFC8505], the 6LR generates an EDAR messa= ge 905 =C2=A0upon reception of a valid NS(EARO) message for the registration = of a 906 =C2=A0new IPv6 Address by a 6LN. =C2=A0If the initial EDAR/EDAC exchan= ge 907 =C2=A0succeeds, then the 6LR installs an NCE for the Registration Life= time. 908 =C2=A0For the registration refreshes, if the RPL Root has indicated th= at it 909 =C2=A0proxies the keep-alive EDAR/EDAC exchange with the 6LBR (see 910 =C2=A0Section 4), the 6LR MUST refrain from sending the keep-alive EDA= R. [nit] s/Also as prescribed/As prescribed 912 =C2=A0If the "R" flag is set in the NS(EARO), the 6LR MUST inject the = Host 913 =C2=A0route in RPL, unless this is barred for other reasons, such as t= he 914 =C2=A0saturation of the RPL parents. =C2=A0The 6LR MUST use a RPL Non-= Storing 915 =C2=A0Mode signaling and the updated Target Option (see Section 9). = =C2=A0The 916 =C2=A06LR MUST request a DAO-ACK by setting the 'K' flag in the DAO 917 =C2=A0message. =C2=A0Success injecting the route to the RUL is indicat= ed by the 918 =C2=A0'E' flag set to 0 in the RPL status of the DAO-ACK message. [major] What is "the Host route"? =C2=A0I guess you mean a "host route to the Registered Address contained in the EDAC". =C2=A0Or, as you mention later, "router to the RUL". [major] "MUST...unless" =C2=A0 The use of MUST implies no exceptions. =C2= =A0 s/MUST/SHOULD 920 =C2=A0The Opaque field in the EARO hints the 6LR on the RPL Instance t= hat 921 =C2=A0SHOULD be used for the DAO advertisements, and for the forwardin= g of 922 =C2=A0packets sourced at the registered address when there is no RPI i= n the 923 =C2=A0packet, in which case the 6LR MUST encapsulate the packet to the= Root 924 =C2=A0adding an RPI in the outer header. =C2=A0If the Opaque field is = zero, the 925 =C2=A06LR is free to use the default RPL Instance (zero) for the regis= tered 926 =C2=A0address or to select an Instance of its choice. [major] "hints" =C2=A0 It is really a hint, or the RPL Instance? =C2=A0If o= nly a hint, where would the Instance that "SHOULD be used" come from? =C2=A0The text in =C2=A710.2.1 implies that the 6LN knows what the Instance is. [major] "the RPL Instance that SHOULD be used for the DAO advertisements" When would the 6LR not use the Instance signaled by the 6LN? =C2=A0IOW, why is this a recommendation and not a requirement? [nit] s/and for the/and the [major] "SHOULD be used for...forwarding...in which case the 6LR MUST encapsulate the packet to the Root adding an RPI in the outer header" There's a Normative conflict between recommending the use of the RPLInstanceID and requiring the use of the RPI (which contains the RPLInstanceID). [minor] How is the 6LR to "select an Instance of its choice"? =C2=A711.2/rfc6550 talks specifically about the need for guidance for external packets: =C2=A0 =C2=A0The definition and provisioning of RPL Instances are out of sc= ope for =C2=A0 =C2=A0this specification. =C2=A0Guidelines may be application and im= plementation =C2=A0 =C2=A0specific, and they are expected to be elaborated in future com= panion =C2=A0 =C2=A0specifications. =C2=A0Those operations are expected to be such= that data =C2=A0 =C2=A0packets coming from the outside of the RPL network can unambig= uously =C2=A0 =C2=A0be associated to at least one RPL Instance and be safely route= d over =C2=A0 =C2=A0any instance that would match the packet. 928 =C2=A0If the "I" field is not zero, then the 6LR MUST consider that th= e 929 =C2=A0Opaque field is zero. =C2=A0If the Opaque field is not zero, the= n it is 930 =C2=A0expected to carry a RPLInstanceID for the RPL Instance suggested= by 931 =C2=A0the 6LN. =C2=A0If the 6LR does not participate to the associated= Instance, 932 =C2=A0then the 6LR MUST consider that the Opaque field is zero; else, = that 933 =C2=A0is if the 6LR participates to the suggested RPL Instance, then t= he 934 =C2=A06LR SHOULD use that Instance for the Registered Address. [nit] There is some redundancy/repetition between this paragraph and the last one. [major] "If the "I" field is not zero, then the 6LR MUST consider that the Opaque field is zero." rfc8505 already specifies pretty much the same thing. OLD> =C2=A0 =C2=A0If the "I" field is not zero, then the 6LR MUST consider that = the =C2=A0 =C2=A0Opaque field is zero. =C2=A0If the Opaque field is not zero, t= hen it is =C2=A0 =C2=A0expected to carry a RPLInstanceID for the RPL Instance suggest= ed by =C2=A0 =C2=A0the 6LN. NEW> =C2=A0 =C2=A0As described in rfc8505, if the "I" field is zero, then the Op= aque field =C2=A0 =C2=A0is expected to carry the RPLInstanceID suggested by the 6LN. = =C2=A0Otherwise, =C2=A0 =C2=A0the Opaque field is ignored. [nit] s/participate to the/participate in the ... 939 =C2=A01. =C2=A0The Registered Address is signaled as Target Prefix in = the 940 =C2=A0 =C2=A0 =C2=A0updated Target Option in the DAO message; the Pref= ix Length is 941 =C2=A0 =C2=A0 =C2=A0set to 128. =C2=A0The ROVR field is copied unchang= ed from the EARO 942 =C2=A0 =C2=A0 =C2=A0(see Section 9). [nit] s/as Target Prefix/as the Target Prefix [minor] "Prefix Length is set to 128" ...and the F flag is set. ... 948 =C2=A03. =C2=A0The 6LR sets the External 'E' flag in the TIO to indica= te that it 949 =C2=A0 =C2=A0 =C2=A0redistributes an external target into the RPL netw= ork [nit] s/it redistributes/it is redistributing 951 =C2=A04. =C2=A0the Path Lifetime in the TIO is computed from the Lifet= ime in the 952 =C2=A0 =C2=A0 =C2=A0EARO Option. =C2=A0This adapts it to the Lifetime = Units used in the 953 =C2=A0 =C2=A0 =C2=A0RPL operation; note that if the lifetime is 0, the= n the DAO 954 =C2=A0 =C2=A0 =C2=A0message is a No-Path DAO that cleans up the the ro= utes down to 955 =C2=A0 =C2=A0 =C2=A0the RUL; this also causes the Root as a proxy to s= end an EDAR 956 =C2=A0 =C2=A0 =C2=A0message to the 6LBR with a Lifetime of 0. [minor] s/Lifetime/Registration Lifetime [minor] "Path Lifetime in the TIO is computed" =C2=A0How? =C2=A0Given that = the Registration Lifetime is in seconds, but the Lifetime Unit can be in days, there may be cases where the result is close to 0. =C2=A0Would that result in an NPDAO? [nit] s/the the/the ... 961 =C2=A0Upon receiving the DAO-ACK or an asynchronous DCO message, the 6= LR 962 =C2=A0MUST send the NA(EARO) to the RUL. [major] "Upon receiving the DAO-ACK ...the 6LR MUST send the NA(EARO)". My interpretation is that the 6LR will wait for the DAO-ACK before sending the NA(EARO), is that correct? =C2=A79.3/rfc6550: =C2=A0 =C2=A04. =C2=A0A node receiving a unicast DAO message with the 'K' f= lag set =C2=A0 =C2=A0 =C2=A0 =C2=A0SHOULD respond with a DAO-ACK. =C2=A0A node rece= iving a DAO message =C2=A0 =C2=A0 =C2=A0 =C2=A0without the 'K' flag set MAY respond with a DAO-= ACK, especially =C2=A0 =C2=A0 =C2=A0 =C2=A0to report an error condition. =C2=A0 =C2=A05. =C2=A0A node that sets the 'K' flag in a unicast DAO messag= e but does =C2=A0 =C2=A0 =C2=A0 =C2=A0not receive a DAO-ACK in response MAY reschedule= the DAO message =C2=A0 =C2=A0 =C2=A0 =C2=A0transmission for another attempt, up until an im= plementation- =C2=A0 =C2=A0 =C2=A0 =C2=A0specific number of retries. This text says that the 6LR may never receive a DAO-ACK. =C2=A0If that happens (even after trying again), what should the 6LR do? =C2=A0 During this time the RUL is waiting for the NS(EARO)... 964 =C2=A0The 6LR MUST set "R" flag in the NA(EARO) back if and only if th= e 'E' 965 =C2=A0flag is reset, indicating that the 6LR injected the Registered 966 =C2=A0Address in the RPL routing successfully and that the EDAR proxy 967 =C2=A0operation succeeded. [nit] s/set "R"/set the "R" 969 =C2=A0If the 'A' flag in the RPL Status is set, the embedded Status Va= lue 970 =C2=A0is passed back to the RUL in the EARO Status. =C2=A0If the 'E' f= lags is 971 =C2=A0also set, the registration failed for 6LoWPAN ND related reasons= , and 972 =C2=A0the NCE is removed. [nit] s/'E' flags/'E' flag 974 =C2=A0If the 'A' flag is not set in the RPL Status of the DAO-ACK, the= n the 975 =C2=A06LoWPAN ND operation succeeded and an EARO Status of 0 (Success)= MUST 976 =C2=A0be returned to the RUL, even if the 'E' flag is set in the RPL 977 =C2=A0Status. =C2=A0The EARO Status of 0 MUST also be used if the 6LR = could not 978 =C2=A0even try to inject the route. [major] "If the 'A' flag is not set in the RPL Status of the DAO-ACK, then the 6LoWPAN ND operation succeeded..." =C2=A78 says this: "the RPL Root MUST copy the 6LoWPAN ND Status unchanged in the RPL Status and set the 'A' bit" =C2=A0 This means that if the A flag is not set then the Root didn't comply with the MUST in =C2=A78...or that it did not copy result from the EDAC...which then means that the DAO-ACK is not valid. =C2=A0What am I missing? [nit] s/succeeded and/succeeded, and [major] "even if the 'E' flag is set" =C2=A0 Sorry, what? =C2=A0The E flag indicates a rejection... =C2=A0I thought I understood the logic (in =C2=A78= ) of setting the A/E flags...but it seems that I didn't. =C2=A0It would be ideal to then be explicit about the different combinations and how we can get to them. 980 =C2=A0This means that, in case of an error injecting the route that is= not 981 =C2=A0related to ND, the registration succeeds but the RPL route is no= t 982 =C2=A0installed, which is signaled by the "R" flag reset. =C2=A0It is = up to the 983 =C2=A06LN to keep the binding with the 6LR or destroy it. [nit] s/succeeds but/succeeds, but [major] Figure 5 seems to indicate that the DAO-ACK is generated when the EDAC is received, which is inline with the specification in =C2=A78 ("the RPL Root MUST copy the 6LoWPAN ND Status unchanged in the RPL Status and set the 'A' bit")...but from the last few paragraphs it seems that there are other reasons for generating the DAO-ACK. =C2=A0While not clear from the Figure, =C2=A710.2.3 does hint by saying "if a DAO is pending"... =C2=A0Again, I think that this part of the operation has to be much more explicit. rfc6550 has no information about "pending" DAOs, or how fast the DAO-ACK is to be sent. =C2=A0In fact, there is no firm requirement for the DAO-ACK to exist, just hope that it does: - =C2=A76.4/rfc6550: "The DAO message may optionally, upon explicit request= or =C2=A0 error, be acknowledged by its destination with a Destination Adverti= sement =C2=A0 Acknowledgement (DAO-ACK) message back to the sender of the DAO." This sentence suggests that the DAO-ACK is optional, even if requested, and =C2=A79.3/rfc6550 supports that: " =C2=A03. =C2=A0A node MAY set the 'K' flag in a unicast DAO message to so= licit a =C2=A0 =C2=A0 =C2=A0 =C2=A0unicast DAO-ACK in response in order to confirm = the attempt. =C2=A0 =C2=A04. =C2=A0A node receiving a unicast DAO message with the 'K' f= lag set =C2=A0 =C2=A0 =C2=A0 =C2=A0SHOULD respond with a DAO-ACK. =C2=A0A node rece= iving a DAO message =C2=A0 =C2=A0 =C2=A0 =C2=A0without the 'K' flag set MAY respond with a DAO-= ACK, especially =C2=A0 =C2=A0 =C2=A0 =C2=A0to report an error condition. " Note that "SHOULD respond with a DAO-ACK" leaves the door open to not doing it. =C2=A0Unfortunately rfc6550 didn't explicitly mention what may be the reasons to not send a DAO-ACK (or not using MUST instead). In summary, there doesn't seem to be a guarantee that a DAO-ACK will be received...which means that the 6LN may be left waiting for a response to the registration (the same issues appears to be present for a re-registration). 985 =C2=A0In a network where Address Protected Neighbor Discovery (AP-ND) = is 986 =C2=A0enabled, in case of a DAO-ACK or a DCO indicating transporting a= n 987 =C2=A0EARO Status Value of 5 (Validation Requested), the 6LR MUST chal= lenge 988 =C2=A0the 6LN for ownership of the address, as described in section 6.= 1 of 989 =C2=A0[AP-ND], before the Registration is complete. =C2=A0This ensures= that the 990 =C2=A0address is validated before it is injected in the RPL routing. [major maybe] "network where...(AP-ND) is enabled" =C2=A0Just to make sure I'm understanding: the network itself is not enabled for AP-ND, but the important nodes (6LN, 6LR, Root and 6LBR) are. =C2=A0IOW, RPL only carries the EARO status values that result from the AP-ND operation. If this true? Also, the only reason the EARO Status Value would be 5 is if the 6LN already supports AP-ND, right? =C2=A0I'm asking this because of the "MUST challenge" above, and =C2=A77.1 saying that the "RUL SHOULD support [AP-ND]" (recommended, not required). If my understanding is correct, then the text as is looks fine. :-) 992 =C2=A0If the challenge succeeds then the operations continue as normal= . =C2=A0In 993 =C2=A0particular a DAO message is generated upon the NS(EARO) that pro= ves 994 =C2=A0the ownership of the address. =C2=A0If the challenge failed, the= 6LR 995 =C2=A0rejects the registration as prescribed by AP-ND and may take act= ions 996 =C2=A0to protect itself against DoS attacks by a rogue 6LN, see Sectio= n 12. [nit] s/succeeds then the operations continue/succeeds, then the operation continues [nit] s/particular/particular, [minor] "a DAO message is generated upon the NS(EARO) that proves the ownership of the address" It would be very nice is a new figure was included (either here or in =C2=A710.1) to show this updated flow. 998 =C2=A0The 6LR may at any time send a unicast asynchronous NA(EARO) wit= h the 999 =C2=A0"R" flag reset to signal that it stops providing routing service= s, 1000 =C2=A0and/or with the EARO Status 2 "Neighbor Cache full" to signal t= hat it 1001 =C2=A0removes the NCE. =C2=A0It may also send a final RA, unicast or = multicast, 1002 =C2=A0with a Router Lifetime field of zero, to signal that it stops s= erving 1003 =C2=A0as router, as specified in section 6.2.5 of [RFC4861]. [minor] What are the RPL actions that should take place? =C2=A0For example, if the 6LR "stops providing routing services" to a specific 6LN, but still acts as a router for others...should it also send an NPDAO/DCO to remove the routing state? =C2=A0Is there a reference somewhere about how a RPL router gracefully "stops serving as router"? 1005 =C2=A0If a 6LR receives a valid NS(EARO) message with the "R" flag re= set 1006 =C2=A0and a Registration Lifetime that is not 0, and the 6LR was inje= cting 1007 =C2=A0the Registered Address due to previous NS(EARO) messages with t= he "R" 1008 =C2=A0flag set, then the 6LR MUST stop injecting the address. =C2=A0I= t is up to 1009 =C2=A0the Registering 6LN to maintain the corresponding route from th= en on, 1010 =C2=A0either keeping it active via a different 6LR or by acting as a = RAN 1011 =C2=A0and managing its own reachability. [major] "MUST stop injecting the address" =C2=A0Can you be more specific? What does this mean in RPL terms? =C2=A0Send an NPDAO/DCO? 1013 10.2.3. =C2=A0Perspective of the RPL Root 1015 =C2=A0A RPL Root SHOULD set the "P" flag in the RPL DODAG Configurati= on 1016 =C2=A0Option of the DIO messages that it generates (see Section 4) to 1017 =C2=A0signal that it proxies the EDAR/EDAC exchange and supports the 1018 =C2=A0Updated RPL Target option. =C2=A0The remainder of this section = assumes 1019 =C2=A0that it does. [major] If the Root supports the functionality, when would it be ok for it to not set the P flag? =C2=A0IOW, why is it recommended and not required? =C2=A0[Note that I may be missing context because there is no specification for that flag.] 1021 =C2=A0Upon reception of a DAO message, for each updated RPL Target Op= tion 1022 =C2=A0(see Section 9) that creates or updates an existing RPL state, = the 1023 =C2=A0Root MUST notify the 6LBR. =C2=A0This can be done using an inte= rnal API if 1024 =C2=A0they are integrated, or using a proxied EDAR/EDAC exchange if t= hey 1025 =C2=A0are separate entities. [major nit] "MUST notify the 6LBR. =C2=A0This can be done..." =C2=A0 I'm no= t too happy with the wording as it seems to provide options to a requirement... Suggestion> =C2=A0 =C2=A0The Root MUST notify the 6LBR by using a proxied EDAR/EDAC exc= hange if =C2=A0 =C2=A0they are separate entities. =C2=A0If the RPL Root and 6LBR are= integrated, =C2=A0 =C2=A0then an internal API can be used. ... 1043 =C2=A0Upon receiving an EDAC message from the 6LBR, if a DAO is pendi= ng, 1044 =C2=A0then the Root MUST send a DAO-ACK back to the 6LR. =C2=A0Else, = if the 1045 =C2=A0Status in the EDAC message is not "Success", then it MUST send = an 1046 =C2=A0asynchronous DCO to the 6LR. [?] "if a DAO is pending" =C2=A0Even though rfc6550 doesn't talk about "pending", I take this to mean that the DAO hasn't been ack'd. =C2=A0Just wondering (because I couldn't find it in rfc6550), is there a timer that defines the time between receiving the DAO and sending a DAO-ACK. I'm also wondering about it since sending a DAO-ACK is only recommended. [major] What if the EDAC message is not received? =C2=A0Should the Root signal a failure? =C2=A0What if the EDAC message comes in after a failure is signaled? =C2=A0This should presumably not happen, especially since the 6LN already registered...but I'm worried about the timing. [major] Some text should be added related to the possibility that not all nodes may know what the DCO is. Suggestion (borrowing from =C2=A74.6.2/EFFICIENT-NPDAO)> =C2=A0 =C2=A0This document assumes that all the 6LRs in the network support= this =C2=A0 =C2=A0specification. =C2=A0If there are 6LRs in the DCO message path= which do not =C2=A0 =C2=A0support this document, then the issue indication may not reach= the 6LR. =C2=A0 =C2=A0Alternatively, the Root could... I stopped there because the text above says that the Root "MUST send an asynchronous DCO". ... 1059 11. =C2=A0Protocol Operations for Multicast Addresses ... 1068 =C2=A0"Multicast Listener Discovery (MLD) for IPv6" [RFC2710] and its 1069 =C2=A0updated version "Multicast Listener Discovery Version 2 (MLDv2)= for 1070 =C2=A0IPv6" [RFC3810] provide an interface for a listener to register= to 1071 =C2=A0multicast flows. =C2=A0MLDv2 is backwards compatible with MLD, = and adds in 1072 =C2=A0particular the capability to filter the sources via black lists= and 1073 =C2=A0white lists. =C2=A0In the MLD model, the Router is a "querier" = and the 1074 =C2=A0Host is a multicast listener that registers to the querier to o= btain 1075 =C2=A0copies of the particular flows it is interested in. [nit] s/backwards/backward [nit] s/"querier" and/"querier", and [major] In general, the text talks about an "MLD listener/querier" -- are you using "MLD" to indicate support for both rfc2710/rfc3810, or are you assuming MLDv1 support only? =C2=A0The phrase "MLDv2 is backwards compatible with MLD" is what is confusing me. I also ask because the pim WG has an ongoing discussion about deprecating MLDv1. =C2=A0I am assuming MLDv2, which is what rfc8504 requires. =C2=A0If so, let's focus on rfc3810. [-] s/capability to filter the sources via black lists and white lists/support for source filtering That is the language used in rfc3810. 1077 =C2=A0On the first Address Registration, as illustrated in Figure 8, = the 1078 =C2=A06LN, as an MLD listener, sends an unsolicited Report to the 6LR= in 1079 =C2=A0order to start receiving the flow immediately. [minor] "On the first Address Registration..." =C2=A0Do you mean when the 6LN registers its own address (Figure 5)? =C2=A0 I would assume you're talking about when the 6LN decides to listen to multicast; maybe reword... 1081 =C2=A0 =C2=A0 6LN/RUL =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A06LR =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Root =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A06LBR 1082 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 | =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0| 1083 =C2=A0 =C2=A0 =C2=A0 =C2=A0| unsolicited Report | =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 =C2=A0| 1084 =C2=A0 =C2=A0 =C2=A0 =C2=A0|------------------->| =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 =C2=A0| 1085 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 | =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| [] See the comment below about the L2 ack. =C2=A0This same phrase shows up in Figure 9 later on... 1086 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| DAO =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| 1087 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0|-------------->| =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| 1088 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0DAO-ACK =C2=A0 =C2=A0| =C2=A0= =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| 1089 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0|<--------------| =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| 1090 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 | | [minor] "if not listening" =C2=A0Even if the 6LBR is listening, the Report should be unsolicited, right? =C2=A0I'm not sure what this phrase means... ... 1097 =C2=A0Since multicast Layer-2 messages are avoided, it is important t= hat 1098 =C2=A0the asynchronous messages for unsolicited Report and Done are s= ent 1099 =C2=A0reliably, for instance using a Layer-2 acknowledgment, or attem= pted 1100 =C2=A0multiple times. [major] The lack of reliable transmission is already addressed in rfc3810. =C2=A0What concerns me about the text is the suggestion that a different (L2 ack) mechanism can be used for MLD without any specifics. 1102 =C2=A0The 6LR acts as a generic MLD querier and generates a DAO for t= he 1103 =C2=A0multicast target. =C2=A0The lifetime of the DAO is set to be in= the order 1104 =C2=A0of the Query Interval, yet larger to account for variable propa= gation 1105 =C2=A0delays. [minor] s/multicast target/Multicast Address in the Report message [major] "generates a DAO for the multicast target" =C2=A0 This document is a standards track specification...we need to be more explicit. =C2=A0I'm assuming that the Multicast Address is included as the Target Prefix in the Target Option... [major] One Multicast Address per DAO? =C2=A0I think I saw a related discussion on the list recently. [major] "lifetime of the DAO" =C2=A0The Path Lifetime? [major] "lifetime...is set to be in the order of the Query Interval, yet larger..." =C2=A0How much is that? =C2=A0Double? =C2=A0Just a few secon= ds more? ms? ... 1111 =C2=A0Upon a DAO with a multicast target, the RPL Root checks if it i= s 1112 =C2=A0already registered as a listener for that address, and if not, = it 1113 =C2=A0performs its own unsolicited Report for the multicast target. [major] As above, please be specific. =C2=A0How is the DAO information used to build a Query? 1115 =C2=A0An Address re-Registration is pulled periodically by 6LR acting= as 1116 =C2=A0querier. =C2=A0Note that the message may be sent unicast to all= the known 1117 =C2=A0individual listeners. [major] In MLDv2 that is called a Query... [nit] s/by 6LR/by the 6LR [major] "message may be sent unicast to all the known individual listeners" =C2=A0The first paragraph in this section says that "the multicast packet is passed as a Layer-2 unicast to each of the interested children", so there is no other option, right? ... 1144 =C2=A0Note that any of the functions 6LR, Root and 6LBR might be coll= apsed 1145 =C2=A0in a single node, in which case the flow above happens internal= ly, 1146 =C2=A0and possibly through internal API calls as opposed to messaging= . [nit] s/Root and/Root, and 1148 12. =C2=A0Security Considerations 1150 =C2=A0First of all, it is worth noting that with [RFC6550], every nod= e in 1151 =C2=A0the LLN is RPL-aware and can inject any RPL-based attack in the 1152 =C2=A0network. =C2=A0This specification isolates edge nodes that can = only 1153 =C2=A0interact with the RPL routers using 6LoWPAN ND, meaning that th= ey 1154 =C2=A0cannot perform RPL insider attacks. [nit] s/First of all, it/I [major] Because 6LoWPAN ND is used, please add text about the Security Considerations from rfc6775, rfc8505 apply. [major] Also, let's work in a general pointer to rfc7416 somewhere (instead of the very specific one below). [major ?] Are there attacks that can be injected into the RPL network through ND? =C2=A0I'm wondering if a RUL can request and inject a significant number of addresses so that it could hinder the operation of the LLN. =C2=A0I don't know if that's even an issue...just thinking out loud. 1156 =C2=A06LoWPAN ND can optionally provide SAVI features with [AP-ND], w= hich 1157 =C2=A0reduces even more the attack perimeter that is available to the= edge 1158 =C2=A0nodes. [minor] I think there's some discussion of this in rfc8505...maybe point to that. =C2=A0Otherwise, this paragraph feels orphan... 1160 =C2=A0The LLN nodes depend on the 6LBR and the RPL participants for t= heir 1161 =C2=A0operation. =C2=A0A trust model must be put in place to ensure t= hat the 1162 =C2=A0right devices are acting in these roles, so as to avoid threats= such 1163 =C2=A0as black-holing, (see [RFC7416] section 7) or bombing attack wh= ereby 1164 =C2=A0an impersonated 6LBR would destroy state in the network by usin= g the 1165 =C2=A0"Removed" Status code. 1167 =C2=A0This trust model could be at a minimum based on a Layer-2 Secur= e 1168 =C2=A0joining and the Link-Layer security. =C2=A0This is a generic 6L= oWPAN 1169 =C2=A0requirement, see Req5.1 in Appendix of [RFC8505]. 1171 =C2=A0Additionally, the trust model could include a role validation t= o 1172 =C2=A0ensure that the node that claims to be a 6LBR or a RPL Root is 1173 =C2=A0entitled to do so. [major] There was some trust model-related text in draft-ietf-roll-turnon-rfc8138 that we ended up replacing. =C2=A0Please do the same here. 1175 =C2=A0At the time of this writing RPL does not have a zerotrust model 1176 =C2=A0whereby it is possible to validate the origin of an address tha= t is 1177 =C2=A0injected in a DAO. =C2=A0This specification makes a first step = in that 1178 =C2=A0direction by allowing the Root to challenge the RUL via the 6LR= that 1179 =C2=A0serves it. [nit] s/writing RPL/writing, RPL [nit] s/zerotrust/zero-trust [minor] The challenge really comes from the 6LBR (not the Root)...but only if AP-ND is present. =C2=A0IOW, the use of AP-ND is what adds the protection, not the specification itself. =C2=A0Is that what we're talking about here? If so, then I have a couple more things to point at: - =C2=A73.2.3: "This specification does not address how the protection by [= AP-ND] =C2=A0 could be extended to RPL." =C2=A0But that is what seems to be claime= d above. - =C2=A77.1: "The RUL SHOULD support [AP-ND] to protect the ownership of it= s =C2=A0 addresses." =C2=A0If the RUL doesn't, then whatever benefit is claim= ed/expected =C2=A0 is lost. 1181 13. =C2=A0IANA Considerations [major] =C2=A714-17 should be sub-sections of this one. ... 1191 13.2. =C2=A0Resizing the ARO Status values 1193 =C2=A0Section 12 of [RFC6775] creates the Address Registration Option 1194 =C2=A0Status Values Registry with a range 0-255. 1196 =C2=A0This specification reduces that range to 0-63. [minor] NEW> =C2=A0 =C2=A0This specification reduces that range to 0-63 (Section 8). 1198 =C2=A0IANA is requested to reduce the upper bound of the unassigned v= alues 1199 =C2=A0in the Address Registration Option Status Values Registry from = -255 1200 =C2=A0to -63. [major] NEW> =C2=A0 =C2=A0IANA is requested modify the Address Registration Option Statu= s Values =C2=A0 =C2=A0Registry so that the upper bound of the unassigned values is 6= 3. =C2=A0This =C2=A0 =C2=A0document should be added as a reference. =C2=A0The registratio= n procedure does =C2=A0 =C2=A0not change. [major] Because of this change in the registry defined by rfc6775, that RFC should be formally Updated. 1202 14. =C2=A0New DODAG Configuration Option Flag 1204 =C2=A0This specification updates the Registry for the "DODAG Configur= ation 1205 =C2=A0Option Flags" that was created for [RFC6550] as follows: [major] NEW> =C2=A0 =C2=A0IANA is requested to assign a flag from the "DODAG Configurati= on Option =C2=A0 =C2=A0Flags" registry as follows: 1207 =C2=A0 =C2=A0 =C2=A0 =C2=A0 +------------+---------------------------= -+-----------+ 1208 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | Bit Number | Capability Description =C2= =A0 =C2=A0 | Reference | 1209 =C2=A0 =C2=A0 =C2=A0 =C2=A0 +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D+=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+ 1210 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | 1 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| R= oot Proxies EDAR/EDAC (P) | THIS RFC =C2=A0| 1211 =C2=A0 =C2=A0 =C2=A0 =C2=A0 +------------+---------------------------= -+-----------+ [major] Please mark the value (1) as suggested. ... 1215 15. =C2=A0New RPL Target Option Flag 1217 =C2=A0Section 20.15 of [RFC6550] creates a Registry for the 8-bit "RP= L 1218 =C2=A0Target Option Flags" field. =C2=A0IANA is requested to reduce t= he size of 1219 =C2=A0the field in the Registry to 4 bits. =C2=A0This specification a= lso defines 1220 =C2=A0a new entry in the Registry as follows: [] Suggestion> =C2=A0 =C2=A0This document modifies the "RPL Target Option Flags" registry = initially =C2=A0 =C2=A0created in Section 20.15 of [RFC6550]. =C2=A0The registry now = includes only =C2=A0 =C2=A04-bits (Section 9) and should point to this document as an add= itional =C2=A0 =C2=A0reference. =C2=A0The registration procedure doesn't change. =C2=A0 =C2=A0The following table shows the initial assignment. [major] This change in the registry should be flagged as an Update to rfc65= 50. ... 1228 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Table = 3: New RPL Target Option Flag [minor] s/New RPL Target Option Flag/RPL Target Option Registry 1230 16. =C2=A0New Subregistry for the RPL Non-Rejection Status values 1232 =C2=A0This specification creates a new Subregistry for the RPL Non- 1233 =C2=A0Rejection Status values for use in RPL DAO-ACK and DCO messages= with 1234 =C2=A0the 'A' flag reset, under the ICMPv6 parameters registry. [nit] s/in RPL/in the RPL [major] The DCO-ACK Status registry is under the RPL registry. =C2=A0Why isn't this one there too? =C2=A0It is RPL-related. ... 1238 =C2=A0* =C2=A0Registration procedure is "Standards Action" [RFC8126]. [major ?] All the other RPL registries have an "IETF Review" registration procedure. =C2=A0Why is this one different? ... 1242 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 +-------+------------------= ------+-----------+ 1243 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | Value | Meaning =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| Reference | 1244 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 +=3D=3D=3D=3D=3D=3D=3D+=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+ 1245 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | 0 =C2=A0 =C2=A0 | Unquali= fied acceptance | RFC 6550 =C2=A0| 1246 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 +-------+------------------= ------+-----------+ [major] Let's also add this document as a reference for this initial alloca= tion. ... 1250 17. =C2=A0New Subregistry for the RPL Rejection Status values 1252 =C2=A0This specification creates a new Subregistry for the RPL Reject= ion 1253 =C2=A0Status values for use in RPL DAO-ACK and RCO messages with the = 'A' 1254 =C2=A0flag reset, under the ICMPv6 parameters registry. [nit] s/in RPL/in the RPL [minor] s/RCO/DCO [major] The DCO-ACK Status registry is under the RPL registry. =C2=A0Why isn't this one there too? =C2=A0It is RPL-related. ... 1258 =C2=A0* =C2=A0Registration procedure is "Standards Action" [RFC8126]. [major ?] All the other RPL registries have an "IETF Review" registration procedure. =C2=A0Why is this one different? ... 1276 19. =C2=A0Normative References [minor] The following references can be Informative: ... 1293 =C2=A0[RFC4919] =C2=A0Kushalnagar, N., Montenegro, G., and C. Schumac= her, "IPv6 1294 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 over Low-Power Wireless Per= sonal Area Networks (6LoWPANs): 1295 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Overview, Assumptions, Prob= lem Statement, and Goals", 1296 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 RFC 4919, DOI 10.17487/RFC4= 919, August 2007, 1297 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 . ... 1304 =C2=A0[RFC4862] =C2=A0Thomson, S., Narten, T., and T. Jinmei, "IPv6 S= tateless 1305 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Address Autoconfiguration",= RFC 4862, 1306 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 DOI 10.17487/RFC4862, Septe= mber 2007, 1307 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 . ... 1316 =C2=A0[RFC6553] =C2=A0Hui, J. and JP. Vasseur, "The Routing Protocol = for Low- 1317 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Power and Lossy Networks (R= PL) Option for Carrying RPL 1318 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Information in Data-Plane D= atagrams", RFC 6553, 1319 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 DOI 10.17487/RFC6553, March= 2012, 1320 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 . ... 1322 =C2=A0[RFC6554] =C2=A0Hui, J., Vasseur, JP., Culler, D., and V. Manra= l, "An IPv6 1323 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Routing Header for Source R= outes with the Routing Protocol 1324 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 for Low-Power and Lossy Net= works (RPL)", RFC 6554, 1325 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 DOI 10.17487/RFC6554, March= 2012, 1326 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 . ... 1338 =C2=A0[RFC7228] =C2=A0Bormann, C., Ersue, M., and A. Keranen, "Termin= ology for 1339 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Constrained-Node Networks",= RFC 7228, 1340 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 DOI 10.17487/RFC7228, May 2= 014, 1341 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 . ... 1353 =C2=A0[RFC8138] =C2=A0Thubert, P., Ed., Bormann, C., Toutain, L., and= R. Cragie, 1354 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 "IPv6 over Low-Power Wirele= ss Personal Area Network 1355 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 (6LoWPAN) Routing Header", = RFC 8138, DOI 10.17487/RFC8138, 1356 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 April 2017, . ... 1394 20. =C2=A0Informative References ... 1429 =C2=A0[RFC8504] =C2=A0Chown, T., Loughney, J., and T. Winters, "IPv6 = Node 1430 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Requirements", BCP 220, RFC= 8504, DOI 10.17487/RFC8504, 1431 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 January 2019, . [major] This reference should be Normative. ... 1439 Appendix A. =C2=A0Example Compression ... 1455 =C2=A0The difference with the example presented in Figure 19 of [RFC8= 138] 1456 =C2=A0is the addition of a SRH-6LoRH before the RPI-6LoRH to transpor= t the 1457 =C2=A0compressed address of the 6LR as the destination address of the= outer 1458 =C2=A0IPv6 header. =C2=A0In the original example the destination IP o= f the outer 1459 =C2=A0header was elided and was implicitly the same address as the 1460 =C2=A0destination of the inner header. =C2=A0Type 1 was arbitrarily c= hosen, and 1461 =C2=A0the size of 0 denotes a single address in the SRH. [minor] Which one is the "original example", this one, or the one in rfc813= 8? From nobody Tue Oct 6 11:18:06 2020 Return-Path: X-Original-To: roll@ietfa.amsl.com Delivered-To: roll@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 1F08F3A0E44 for ; Tue, 6 Oct 2020 11:18:05 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.899 X-Spam-Level: X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id sDqLigaiPOFy for ; Tue, 6 Oct 2020 11:18:03 -0700 (PDT) Received: from tuna.sandelman.ca (tuna.sandelman.ca [209.87.249.19]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 8BA973A0B5E for ; Tue, 6 Oct 2020 11:18:03 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by tuna.sandelman.ca (Postfix) with ESMTP id BAB6A389AF; Tue, 6 Oct 2020 14:23:21 -0400 (EDT) Received: from tuna.sandelman.ca ([127.0.0.1]) by localhost (localhost [127.0.0.1]) (amavisd-new, port 10024) with LMTP id dxelrOgvQmqp; Tue, 6 Oct 2020 14:23:20 -0400 (EDT) Received: from sandelman.ca (obiwan.sandelman.ca [IPv6:2607:f0b0:f:2::247]) by tuna.sandelman.ca (Postfix) with ESMTP id B33D8389AD; Tue, 6 Oct 2020 14:23:20 -0400 (EDT) Received: from localhost (localhost [IPv6:::1]) by sandelman.ca (Postfix) with ESMTP id BAA7070D; Tue, 6 Oct 2020 14:18:00 -0400 (EDT) From: Michael Richardson To: Routing Over Low power and Lossy networks , Alvaro Retana In-Reply-To: References: X-Mailer: MH-E 8.6+git; nmh 1.7+dev; GNU Emacs 26.1 X-Face: $\n1pF)h^`}$H>Hk{L"x@)JS7<%Az}5RyS@k9X%29-lHB$Ti.V>2bi.~ehC0; <'$9xN5Ub# z!G,p`nR&p7Fz@^UXIn156S8.~^@MJ*mMsD7=QFeq%AL4m Archived-At: Subject: [Roll] In what way is roll-unaware-leaves updating npdao? X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 06 Oct 2020 18:18:05 -0000 --=-=-= Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Alvaro Retana wrote: > =C2=A0=3D=3D=3D Part 3: remaining comments (based on -18) =3D=3D=3D > ... 484 5. =C2=A0Updating draft-ietf-roll-efficient-npdao > [major] To me, Updating an RFC means that the implementations of that > RFC should also implement this one. =C2=A0In this case, there would b= e an > expectation that all nodes that support the DCO would support the > Non-Storing MOP as well. =C2=A0Is that what is intended? > Note that Updating is different than simply expecting the nodes that > implement this specification to comply. > [Personal opinion: I don't think a formal Update of > draft-ietf-roll-efficient-npdao is needed. =C2=A0As mentioned below, = this > document "extends"...] 1) I agree that we are extending, not updating. It feels weird to update a document that is in the same cluster :-) 2) The text says: [EFFICIENT-NPDAO] defines the DCO for RPL Storing Mode only, with a link-local scope. This specification extends its use to the Non- Storing MOP, whereby the DCO is sent unicast by the Root directly to the RAN that injected the DAO message for the considered target. If an RPL aware node supports RUL, then it has to support DCOs even when operating in a Non-Storing MOP. The document does NOT say that a node with RUL support has to support Non-Storing MOPs. =2D- Michael Richardson . o O ( IPv6 I=C3=B8T consulti= ng ) Sandelman Software Works Inc, Ottawa and Worldwide --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCgAdFiEEbsyLEzg/qUTA43uogItw+93Q3WUFAl98tNgACgkQgItw+93Q 3WU2oAgAu8HmHnyRAs7ugIXcAD73C4tWOUBsgaufuh8kc8HBdL+o8qteSs40gepF GFzA9gAqtgGmTTn+fEt8uNJqy2sXz4tQHTEv6iaPyVXFbUvab0JSnKHB3kQIRXQt ymoaUK2tWW3YDXkCF7RM6CFebYTIBi0kRpUhZb14klObU6hOdsPUDSFG7GyJVDlb Q2l+xYhq7mB2Py54XSJON3nH7On83vCx3pP88de4egaldfmQnZhqX4DILbkd+CCX HVnibAjc8w5BP79LwBeutS9xzFGTiZ9jrIAlQyUb1PWAmkcprzvUQhruDKUx26jh cNCSheNC48HOkrKeYR+GPxuQXkXTug== =gSCh -----END PGP SIGNATURE----- --=-=-=-- From nobody Tue Oct 6 11:22:20 2020 Return-Path: X-Original-To: roll@ietfa.amsl.com Delivered-To: roll@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 904063A147F; Tue, 6 Oct 2020 11:22:18 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.899 X-Spam-Level: X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id gVIZWMv6wK1I; Tue, 6 Oct 2020 11:22:17 -0700 (PDT) Received: from tuna.sandelman.ca (tuna.sandelman.ca [209.87.249.19]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id AC5653A0EAF; Tue, 6 Oct 2020 11:22:16 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by tuna.sandelman.ca (Postfix) with ESMTP id CBCCD389AF; Tue, 6 Oct 2020 14:27:35 -0400 (EDT) Received: from tuna.sandelman.ca ([127.0.0.1]) by localhost (localhost [127.0.0.1]) (amavisd-new, port 10024) with LMTP id bOjHUw677fcd; Tue, 6 Oct 2020 14:27:35 -0400 (EDT) Received: from sandelman.ca (obiwan.sandelman.ca [IPv6:2607:f0b0:f:2::247]) by tuna.sandelman.ca (Postfix) with ESMTP id 5608D389AD; Tue, 6 Oct 2020 14:27:35 -0400 (EDT) Received: from localhost (localhost [IPv6:::1]) by sandelman.ca (Postfix) with ESMTP id 5A4C870D; Tue, 6 Oct 2020 14:22:15 -0400 (EDT) From: Michael Richardson To: Routing Over Low power and Lossy networks cc: "Pascal Thubert \(pthubert\)" , "draft-ietf-roll-unaware-leaves\@ietf.org" , "roll-chairs\@ietf.org" In-Reply-To: References: X-Mailer: MH-E 8.6+git; nmh 1.7+dev; GNU Emacs 26.1 X-Face: $\n1pF)h^`}$H>Hk{L"x@)JS7<%Az}5RyS@k9X%29-lHB$Ti.V>2bi.~ehC0; <'$9xN5Ub# z!G,p`nR&p7Fz@^UXIn156S8.~^@MJ*mMsD7=QFeq%AL4m Archived-At: Subject: Re: [Roll] AD Review of draft-ietf-roll-unaware-leaves-18 X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 06 Oct 2020 18:22:19 -0000 --=-=-= Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Alvaro Retana wrote: > ... 510 7.1. =C2=A0Support of 6LoWPAN ND doc> 512 =C2=A0In order to obtain routing services from a 6LR, a RUL MU= ST doc> implement 513 =C2=A0[RFC8505] and set the "R" and "T" flags in the doc> EARO. =C2=A0The RUL SHOULD 514 =C2=A0support [AP-ND] to protect th= e ownership of doc> its addresses. =C2=A0The RUL 515 =C2=A0MUST NOT request routing se= rvices from a doc> 6LR that does not originate 516 =C2=A0RA messages with a CIO that = has the L, doc> P, and E flags all set as 517 =C2=A0discussed in Section 3.3.1, un= less doc> configured to do so. > [major] I may be lost already... =C2=A0A RUL is by definition RPL-una= ware. > It then follows that a RUL can't be assumed to be aware of this > specification, right? =C2=A0If so, then all the Normative language us= ed in > this section can't be used because we can't specify the behavior of a > node that (by definition) is not aware of this document. =C2=A0[See m= ore > related comments below.] We would have liked to have written a document that explained how to support RFC8504-compliant hosts, and at the time of 8504, we tried to make this an issue, but we failed. So, yes, a RUL has to be aware of this document, and RFC8505, but it does need to speak RPL. Such a node could be connected to a MANET or OLSR mesh using RFC8505-ND equally well. Maybe we should consider changing the title of the document? =2D- Michael Richardson . o O ( IPv6 I=C3=B8T consulti= ng ) Sandelman Software Works Inc, Ottawa and Worldwide --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCgAdFiEEbsyLEzg/qUTA43uogItw+93Q3WUFAl98tdcACgkQgItw+93Q 3WUzbgf/TZ1i9QhZ61rDPQl4/eSpU7ukDdDJCg5X88etzENfWVE5ywZmlzhM0IuS Fs57zRCTYFmK0GUuEDk5cOJjZrybFhV8VjzqsF16jEu065YaxPNjbaMkBQ3geRu1 e5Gw9klqI9IcxR4u7lM5PIuPheG5pmpRUJGKpj/9gn1TpUK4g+QOQ9p2w+azFOKK 0HSkmHAUm6EgFjrpl55vmd4DEaHa302rWcZCymVPMVTLiqxjyG0OLZpSw8qwy1y6 J3YE3v8rMZoc26VZvr8xS04FjPlZGe6zFQ1b/+7chS3gMOCm7xNnsUz79tUu9M4F Og03TICmlD4FdDCJPiFESVPPl/qixw== =8RRw -----END PGP SIGNATURE----- --=-=-=-- From nobody Tue Oct 6 11:33:34 2020 Return-Path: X-Original-To: roll@ietfa.amsl.com Delivered-To: roll@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 215713A14CE for ; Tue, 6 Oct 2020 11:33:33 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.096 X-Spam-Level: X-Spam-Status: No, score=-2.096 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id kAgNcQMzwEwB for ; Tue, 6 Oct 2020 11:33:31 -0700 (PDT) Received: from mail-ej1-x62b.google.com (mail-ej1-x62b.google.com [IPv6:2a00:1450:4864:20::62b]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 818D23A14CB for ; Tue, 6 Oct 2020 11:33:31 -0700 (PDT) Received: by mail-ej1-x62b.google.com with SMTP id lw21so15100579ejb.6 for ; Tue, 06 Oct 2020 11:33:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:in-reply-to:references:mime-version:date:message-id:subject:to; bh=dDeKOuKx+wouJ3kyRE3pIYBmY4TyFgiVvc+l93XbsV8=; b=HkO/6GmzkIfX5fjZGizLe4Op/TbWRzesIN+Z2ff8m4AyGe/8pFOAS+8Zuy1s2p8xRd c0H9rUyVSufqfZ/thDcAQ8Tq9J3aaofEC8YdqZrXJ+o8prKP6cVTcPFMz2xYM++Li8TV 5LJfDDzswvdKHWjPN/SeVUHJuJ/mRDDAU2h3mmIHv3d1NUM2Zdn8NdWGs0mEG3Cam22+ +5pm7xQ6FFEINpWPzOO0oWE4HvdNnTKaGkwIc/SMosGfkeCEFCb2SsMdIvpSQwNVbzrv 1+/o63jJGZmglnDPKo8wcTE80gVQ5EEU16NIS7xgN9W3LJ1GEuATlEahVrjavR2UcbYE qh2Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:in-reply-to:references:mime-version:date :message-id:subject:to; bh=dDeKOuKx+wouJ3kyRE3pIYBmY4TyFgiVvc+l93XbsV8=; b=D1WuOph66niWFA053scmXz62Q6xmElSQd/osckbsuYy/ZJDHezyqXBuwPtfUo9s9K9 kROAL4+PUVEE+tetyyaclQejRwv4kqcSq1dmNsGGHcjI3bzFeC3sova0QM7QKZD/fo8A H9PTxOFflWrNVpDL/7App54USrhzYu5/UfPm8UPYbOtOaV4zNmUL9Br8OXuyL25qD0gh Xnk5pVYlLvzy4vR+4sVAkoISaaINy8cwBhDbpRwHK1lGsFMkAU5tOY5ZoRX2+ceTIHgk ZflUg8Z3yfnORb9sCahDaSEv/e3JyRPaVrxx9L7zXjjHv8Wwjpp5KuctggqHJ6CXJ5tU TJPg== X-Gm-Message-State: AOAM532EhG5WPRJ1rVngi5z5MjZQ+t68VFC7ag6pCDy2tGatLbumEqcl Lk2ja7hPF2DOdT8GfKye12W8QDtHOvwZjqox1jqNU0+b X-Google-Smtp-Source: ABdhPJzlLtpS7WT2JutdkLXiysyOSnso3vgO10W27aajev/DpO46TjD/3nxynL1w/NW8NhimnzZt7iq47dJizAmhdcc= X-Received: by 2002:a17:906:7857:: with SMTP id p23mr905252ejm.61.1602009209784; Tue, 06 Oct 2020 11:33:29 -0700 (PDT) Received: from 1058052472880 named unknown by gmailapi.google.com with HTTPREST; Tue, 6 Oct 2020 14:33:29 -0400 From: Alvaro Retana In-Reply-To: <28970.1602008280@localhost> References: <28970.1602008280@localhost> MIME-Version: 1.0 Date: Tue, 6 Oct 2020 14:33:29 -0400 Message-ID: To: Routing Over Low power and Lossy networks , Michael Richardson Content-Type: multipart/alternative; boundary="000000000000e0512e05b104d578" Archived-At: Subject: Re: [Roll] In what way is roll-unaware-leaves updating npdao? X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 06 Oct 2020 18:33:33 -0000 --000000000000e0512e05b104d578 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Just to make sure, we=E2=80=99re agreeing=E2=80=A6right? On October 6, 2020 at 2:18:41 PM, Michael Richardson (mcr+ietf@sandelman.ca= ) wrote: Alvaro Retana wrote: > =3D=3D=3D Part 3: remaining comments (based on -18) =3D=3D=3D > ... 484 5. Updating draft-ietf-roll-efficient-npdao > [major] To me, Updating an RFC means that the implementations of that > RFC should also implement this one. In this case, there would be an > expectation that all nodes that support the DCO would support the > Non-Storing MOP as well. Is that what is intended? > Note that Updating is different than simply expecting the nodes that > implement this specification to comply. > [Personal opinion: I don't think a formal Update of > draft-ietf-roll-efficient-npdao is needed. As mentioned below, this > document "extends"...] 1) I agree that we are extending, not updating. It feels weird to update a document that is in the same cluster :-) 2) The text says: [EFFICIENT-NPDAO] defines the DCO for RPL Storing Mode only, with a link-local scope. This specification extends its use to the Non- Storing MOP, whereby the DCO is sent unicast by the Root directly to the RAN that injected the DAO message for the considered target. If an RPL aware node supports RUL, then it has to support DCOs even when operating in a Non-Storing MOP. The document does NOT say that a node with RUL support has to support Non-Storing MOPs. --=20 Michael Richardson . o O ( IPv6 I=C3=B8T consulting= ) Sandelman Software Works Inc, Ottawa and Worldwide --000000000000e0512e05b104d578 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable =
Just to make sure, we=E2=80=99re agreeing=E2=80= =A6right?

On October 6, 2020 at 2:18:41 P= M, Michael Richardson (mcr+ietf@sa= ndelman.ca) wrote:


Alvaro Retana <aretana.iet= f@gmail.com> wrote:
> =C2=A0=3D=3D=3D Part 3: remaining comments (based on -18) =3D= =3D=3D

> ... 484 5.=C2=A0 Updating draft-ietf-roll-efficient-npdao

> [major] To me, Updating an RFC means that the implementations = of that
> RFC should also implement this one.=C2=A0 In this case, there = would be an
> expectation that all nodes that support the DCO would support = the
> Non-Storing MOP as well.=C2=A0 Is that what is intended?

> Note that Updating is different than simply expecting the node= s that
> implement this specification to comply.

> [Personal opinion: I don't think a formal Update of
> draft-ietf-roll-efficient-npdao is needed.=C2=A0 As mentioned = below, this
> document "extends"...]

1) I agree that we are extending, not updating.
It feels weird to update a document that is in the same cluster :-)

2) The text says:

[EFFICIENT-NPDAO] defines the DCO for RPL Storing Mode only, with a
link-local scope. This specification extends its use to the Non-
Storing MOP, whereby the DCO is sent unicast by the Root directly to
the RAN that injected the DAO message for the considered target.

If an RPL aware node supports RUL, then it has to support DCOs
even when operating in a Non-Storing MOP.

The document does NOT say that a node with RUL support has to support
Non-Storing MOPs.

--
Michael Richardson <mcr+I= ETF@sandelman.ca> . o O ( IPv6 I=C3=B8T consulting )
Sandelman Software Works Inc, Ottawa and Worldwide
<= /body> --000000000000e0512e05b104d578-- From nobody Tue Oct 6 11:37:48 2020 Return-Path: X-Original-To: roll@ietfa.amsl.com Delivered-To: roll@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 389963A1521; Tue, 6 Oct 2020 11:37:39 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.098 X-Spam-Level: X-Spam-Status: No, score=-2.098 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id MSP7vkT_LyrX; Tue, 6 Oct 2020 11:37:37 -0700 (PDT) Received: from mail-ej1-x634.google.com (mail-ej1-x634.google.com [IPv6:2a00:1450:4864:20::634]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 43FDC3A1526; Tue, 6 Oct 2020 11:37:31 -0700 (PDT) Received: by mail-ej1-x634.google.com with SMTP id ce10so19114121ejc.5; Tue, 06 Oct 2020 11:37:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:in-reply-to:references:mime-version:date:message-id:subject:to :cc:content-transfer-encoding; bh=oB8pqFuDRbNymrVNWkpS7aS6wizJa2aPRxG4MGTA/Ys=; b=XxlStEulAakyq5A7on5+GdRZiVzZCmkEHfYswmHw4SCj8mRoorlIqpdbmL4+8cABn7 kaK6G//Hvjoli661TYtjWWokQ1zod+WQ9Z3DQ/z+hAXSj6lO7WQQQ+ZBJQ2M6PGUelcR 7KUojt81VVxcYTV077Wv5nKi1EITJ2Xjtfs3juZ8c2AyuLuZgNvaIvyytrTNhSo08sYE MB0xV/hWV8WaxFtrBF+7XmgASQRF0HNunONilv73qlBNkggDFseET7bixZtHF+1tAP8W nhyTWvDllzkQQlGzvSZBOiu/vesDg+wme9e+Dv8m8WFkxyVt53BKq4aM04Yj0vHOK9pT nDNw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:in-reply-to:references:mime-version:date :message-id:subject:to:cc:content-transfer-encoding; bh=oB8pqFuDRbNymrVNWkpS7aS6wizJa2aPRxG4MGTA/Ys=; b=b8tDFU+ngKZPMudj3kyOsbo4jZTm2yWTJJVMSpZBMBa0HMnvVDvYpzzeYEmEwoxB+6 iUp1v87QWmbAauELJAETIagcu5oI4iCLDEk4qWkRwFjMw1/kF9jGoId7mk8EZ0P8oSSw wWY0yiDfwB41t5Q9nmQ99pWXTRRXx2T4jFkKUaRj06R7bUIZNTlAjkRSeKjW/3FAP5q0 G26IkibTmjvALExU/CDrNFe306DO97JsyK18NfLMIskabWDfvA5eTNB1wZwn+e3DvWKY HKT3kFNUeF5/7Ky0wEQAbZI5yLuWVEpoWsv9OzHe9Cn+NRcFBKWvC3t/STi1KlppP6c8 ewLg== X-Gm-Message-State: AOAM532/6rTQ2NLGoS6O7ZOGCIZtUb4/HujV32ZvJs8oqgwkzT8HwuCm e/tiNPlEr9jkypEHbS60dSHPfqtabryCvBLcCB/55eT+ X-Google-Smtp-Source: ABdhPJwwYI2lrJAcJhW/r8Y/zmO1LYErTsUv2L64TEbSn/RWDZptbdj+67O6jTkpNVaoA0A9r5aafEjvWB3rvgSKf/Y= X-Received: by 2002:a17:906:490d:: with SMTP id b13mr938907ejq.122.1602009449533; Tue, 06 Oct 2020 11:37:29 -0700 (PDT) Received: from 1058052472880 named unknown by gmailapi.google.com with HTTPREST; Tue, 6 Oct 2020 14:37:29 -0400 From: Alvaro Retana In-Reply-To: <29990.1602008535@localhost> References: <29990.1602008535@localhost> MIME-Version: 1.0 Date: Tue, 6 Oct 2020 14:37:29 -0400 Message-ID: To: Routing Over Low power and Lossy networks , Michael Richardson Cc: "roll-chairs@ietf.org" , "draft-ietf-roll-unaware-leaves@ietf.org" Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Archived-At: Subject: Re: [Roll] AD Review of draft-ietf-roll-unaware-leaves-18 X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 06 Oct 2020 18:37:46 -0000 On October 6, 2020 at 2:22:25 PM, Michael Richardson wrote: > > Alvaro Retana wrote: > > ... 510 7.1. Support of 6LoWPAN ND > > doc> 512 In order to obtain routing services from a 6LR, a RUL MUST > doc> implement 513 [RFC8505] and set the "R" and "T" flags in the > doc> EARO. The RUL SHOULD 514 support [AP-ND] to protect the ownership of > doc> its addresses. The RUL 515 MUST NOT request routing services from a > doc> 6LR that does not originate 516 RA messages with a CIO that has the = L, > doc> P, and E flags all set as 517 discussed in Section 3.3.1, unless > doc> configured to do so. > > > [major] I may be lost already... A RUL is by definition RPL-unaware. > > It then follows that a RUL can't be assumed to be aware of this > > specification, right? If so, then all the Normative language used in > > this section can't be used because we can't specify the behavior of a > > node that (by definition) is not aware of this document. [See more > > related comments below.] > > We would have liked to have written a document that explained how to supp= ort > RFC8504-compliant hosts, and at the time of 8504, we tried to make this a= n > issue, but we failed. Right. =C2=A0I now understand the intent/requirements. > So, yes, a RUL has to be aware of this document, and RFC8505, but it does > need to speak RPL. s/does/does not > Such a node could be connected to a MANET or OLSR mesh using RFC8505-ND > equally well. > > Maybe we should consider changing the title of the document? The title ("Routing for RPL Leaves") is not as misleading as the RUL name...which is why I made the initial assumption of not being aware of this document. If clarified early, I don't think we need to change the name. =C2=A0Also, I don't know what would be a better name. Alvaro. From nobody Tue Oct 6 17:34:26 2020 Return-Path: X-Original-To: roll@ietfa.amsl.com Delivered-To: roll@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 9C71A3A15C5 for ; Tue, 6 Oct 2020 17:34:22 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.899 X-Spam-Level: X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id BLHFPbd02exO for ; Tue, 6 Oct 2020 17:34:21 -0700 (PDT) Received: from tuna.sandelman.ca (tuna.sandelman.ca [209.87.249.19]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id A67AA3A15B9 for ; Tue, 6 Oct 2020 17:34:18 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by tuna.sandelman.ca (Postfix) with ESMTP id 8160F389C6; Tue, 6 Oct 2020 20:39:38 -0400 (EDT) Received: from tuna.sandelman.ca ([127.0.0.1]) by localhost (localhost [127.0.0.1]) (amavisd-new, port 10024) with LMTP id ssIBD1q1fAl2; Tue, 6 Oct 2020 20:39:37 -0400 (EDT) Received: from sandelman.ca (obiwan.sandelman.ca [209.87.249.21]) by tuna.sandelman.ca (Postfix) with ESMTP id 61CF9389C5; Tue, 6 Oct 2020 20:39:37 -0400 (EDT) Received: from localhost (localhost [IPv6:::1]) by sandelman.ca (Postfix) with ESMTP id 6EDC0C3B; Tue, 6 Oct 2020 20:34:16 -0400 (EDT) From: Michael Richardson To: Alvaro Retana , Routing Over Low power and Lossy networks In-Reply-To: References: <28970.1602008280@localhost> X-Mailer: MH-E 8.6+git; nmh 1.7+dev; GNU Emacs 26.1 X-Face: $\n1pF)h^`}$H>Hk{L"x@)JS7<%Az}5RyS@k9X%29-lHB$Ti.V>2bi.~ehC0; <'$9xN5Ub# z!G,p`nR&p7Fz@^UXIn156S8.~^@MJ*mMsD7=QFeq%AL4m Archived-At: Subject: Re: [Roll] In what way is roll-unaware-leaves updating npdao? X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 07 Oct 2020 00:34:25 -0000 --=-=-= Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Alvaro Retana wrote: > Just to make sure, we=E2=80=99re agreeing=E2=80=A6right? I was disagreeing with: >> [major] To me, Updating an RFC means that the implementations of that >> RFC should also implement this one. In this case, there would be an >> expectation that all nodes that support the DCO would support the >> Non-Storing MOP as well. Is that what is intended? That's not what's expected. =2D- Michael Richardson . o O ( IPv6 I=C3=B8T consulti= ng ) Sandelman Software Works Inc, Ottawa and Worldwide --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCgAdFiEEbsyLEzg/qUTA43uogItw+93Q3WUFAl99DQgACgkQgItw+93Q 3WVtBgf5AXONLwULb8wniGRiZLAZDU+fd6obrBIhlmzAng+dmfHsFwBdXDK89T6r 3WOtLXzJU/ab0vdzPmg4RqCj5QG+3nvMXc5Mr1TKK+2R81egzBW8FS8sYxBv+8eF ZX8a1A5RyU5NPejTP17KKhMT58wTtTFv1AjF5clfCouiy2umTAlLVhLPp/vxH5pL 6n8nxktRkRaQDkAeRkLReTNcQGSn66pThfL4bjmQDmVAgp26Lnd61TGm0mlnsYd7 ZJLBLT79rVdPyMZdmUONx6NX0bIvdIMeLWDSylbT9im5JRd2jaFqqudy2qrqHcQx daDbqI06HNCvZ6nfPO7KE0Bl25PHNQ== =wLYo -----END PGP SIGNATURE----- --=-=-=-- From nobody Tue Oct 6 17:35:37 2020 Return-Path: X-Original-To: roll@ietfa.amsl.com Delivered-To: roll@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 09EA53A1579 for ; Tue, 6 Oct 2020 17:35:36 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.898 X-Spam-Level: X-Spam-Status: No, score=-1.898 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id lIRzRbq2B-jY for ; Tue, 6 Oct 2020 17:35:34 -0700 (PDT) Received: from tuna.sandelman.ca (tuna.sandelman.ca [IPv6:2607:f0b0:f:3:216:3eff:fe7c:d1f3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 7E20F3A1563 for ; Tue, 6 Oct 2020 17:35:34 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by tuna.sandelman.ca (Postfix) with ESMTP id E4B11389C6; Tue, 6 Oct 2020 20:40:53 -0400 (EDT) Received: from tuna.sandelman.ca ([127.0.0.1]) by localhost (localhost [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 1twhRHF1ZqqV; Tue, 6 Oct 2020 20:40:53 -0400 (EDT) Received: from sandelman.ca (obiwan.sandelman.ca [209.87.249.21]) by tuna.sandelman.ca (Postfix) with ESMTP id 7AB18389C5; Tue, 6 Oct 2020 20:40:53 -0400 (EDT) Received: from localhost (localhost [IPv6:::1]) by sandelman.ca (Postfix) with ESMTP id 86FCAC3B; Tue, 6 Oct 2020 20:35:32 -0400 (EDT) From: Michael Richardson To: Alvaro Retana , Routing Over Low power and Lossy networks In-Reply-To: References: <29990.1602008535@localhost> X-Mailer: MH-E 8.6+git; nmh 1.7+dev; GNU Emacs 26.1 X-Face: $\n1pF)h^`}$H>Hk{L"x@)JS7<%Az}5RyS@k9X%29-lHB$Ti.V>2bi.~ehC0; <'$9xN5Ub# z!G,p`nR&p7Fz@^UXIn156S8.~^@MJ*mMsD7=QFeq%AL4m Archived-At: Subject: Re: [Roll] AD Review of draft-ietf-roll-unaware-leaves-18 X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 07 Oct 2020 00:35:36 -0000 --=-=-= Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Alvaro Retana wrote: >> So, yes, a RUL has to be aware of this document, and RFC8505, but it >> does need to speak RPL. > s/does/does not ARGH. So, yes, a RUL has to be aware of this document, and RFC8505, but it does n= ot need to speak RPL. =2D- Michael Richardson . o O ( IPv6 I=C3=B8T consulti= ng ) Sandelman Software Works Inc, Ottawa and Worldwide --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCgAdFiEEbsyLEzg/qUTA43uogItw+93Q3WUFAl99DVQACgkQgItw+93Q 3WXkiQf+J+tJMRAoC1IN1Bcll3PuVlypg3IVby+n7FazXWcM4NYUwEK2ZYRpyMuc /kMOH8q+vvsFnbdgaIOuguL/Yy7VmrCMiT4geVzH+piy7jSausd3FaO4gl/k8KgT J/AzMuKAalcwH/3GRDx5BsbDBw1n3SvcT/FPJlrvdY3JjJr85JU23vIL3wDQb08m Ic/I4pLLea2Og+iQ9tMhhRdOEyI9Yxu7+WY68fpO3UN5OvQZcQc2FdpKAXVJ+F7O t4lpnoGKkCxRwKzRXOH7/QtIEPq9wxWp0CMVn1/Px359R6+uYX662Vr+TTN3ZuzA nNoZ4uOOGYVRYABdiCE3On1FiZln5Q== =U12C -----END PGP SIGNATURE----- --=-=-=-- From nobody Wed Oct 7 01:01:00 2020 Return-Path: X-Original-To: roll@ietfa.amsl.com Delivered-To: roll@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 6F8093A169D for ; 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Wed, 7 Oct 2020 08:00:52 +0000 From: "Pascal Thubert (pthubert)" To: Routing Over Low power and Lossy networks , Alvaro Retana Thread-Topic: [Roll] AD Review of draft-ietf-roll-unaware-leaves-18 Thread-Index: AQHWnAqcalhvjJ/sXE2H4yIAHvyldqmK4yaAgAAEQYCAAGQKAIAAe62g Date: Wed, 7 Oct 2020 08:00:28 +0000 Deferred-Delivery: Wed, 7 Oct 2020 07:59:48 +0000 Message-ID: References: <29990.1602008535@localhost> <24976.1602030932@localhost> In-Reply-To: <24976.1602030932@localhost> Accept-Language: fr-FR, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: ietf.org; dkim=none (message not signed) header.d=none;ietf.org; dmarc=none action=none header.from=cisco.com; x-originating-ip: [2a01:cb1d:4ec:2200:2418:954:7e44:319f] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 8985ee31-16d4-475a-3513-08d86a971ca9 x-ms-traffictypediagnostic: MN2PR11MB3886: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:4941; x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; 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Wed, 7 Oct 2020 08:18:52 +0000 From: "Pascal Thubert (pthubert)" To: Routing Over Low power and Lossy networks , Alvaro Retana Thread-Topic: [Roll] In what way is roll-unaware-leaves updating npdao? 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Wed, 7 Oct 2020 12:57:52 +0000 From: "Pascal Thubert (pthubert)" To: Routing Over Low power and Lossy networks , Alvaro Retana Thread-Topic: [Roll] AD Review of draft-ietf-roll-unaware-leaves-18 Thread-Index: AQHWnAqcalhvjJ/sXE2H4yIAHvyldqmK4yaAgAAEQYCAAGQKAIAAe62ggABNWDA= Date: Wed, 7 Oct 2020 12:57:27 +0000 Deferred-Delivery: Wed, 7 Oct 2020 12:56:42 +0000 Message-ID: References: <29990.1602008535@localhost> <24976.1602030932@localhost> In-Reply-To: Accept-Language: fr-FR, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: ietf.org; dkim=none (message not signed) header.d=none;ietf.org; dmarc=none action=none header.from=cisco.com; x-originating-ip: [2a01:cb1d:4ec:2200:18ab:7e72:d975:eeda] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 292cedf3-ac8e-471b-379e-08d86ac09a31 x-ms-traffictypediagnostic: MN2PR11MB3582: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:9508; x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: MN2PR11MB3565.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 292cedf3-ac8e-471b-379e-08d86ac09a31 X-MS-Exchange-CrossTenant-originalarrivaltime: 07 Oct 2020 12:57:52.5117 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 5ae1af62-9505-4097-a69a-c1553ef7840e X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: 5EbMdqlMdH8dwQVuCiuXpLcWGPKhfuCO3jA7ztmw5ocbOPXrtkc6Bb3AwtAfd4TAj7gnBdR72DEftKtBtxZXsg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR11MB3582 X-OriginatorOrg: cisco.com X-Outbound-SMTP-Client: 173.37.102.14, xch-rcd-004.cisco.com X-Outbound-Node: alln-core-2.cisco.com Archived-At: Subject: Re: [Roll] AD Review of draft-ietf-roll-unaware-leaves-18 X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 07 Oct 2020 12:57:59 -0000 > -----Original Message----- > From: Roll On Behalf Of Pascal Thubert (pthubert) > Sent: mercredi 7 octobre 2020 10:00 > To: Routing Over Low power and Lossy networks ; Alvaro > Retana > Subject: Re: [Roll] AD Review of draft-ietf-roll-unaware-leaves-18 >=20 > > -----Original Message----- > > From: Roll On Behalf Of Michael Richardson > > Sent: mercredi 7 octobre 2020 02:36 > > To: Alvaro Retana ; Routing Over Low power and > > Lossy networks > > Subject: Re: [Roll] AD Review of draft-ietf-roll-unaware-leaves-18 > > > > > > Alvaro Retana wrote: > > >> So, yes, a RUL has to be aware of this document, and RFC8505, bu= t it > > >> does need to speak RPL. > > > > > s/does/does not > > > > ARGH. > > > > So, yes, a RUL has to be aware of this document, and RFC8505, but it > > does not need to speak RPL. >=20 > Exactly! >=20 I already had acted on this but I understand it was not enough; So let me p= ropose the additional diff (which is on the first mention of a RUL) OLD [USEofRPLinfo] introduces the terms RPL-Aware-Leaf (RAL) and RPL- Unaware Leaf (RUL). A RAL is a Leaf that injects Host routes in RPL to manage the reachability of its IPv6 addresses. Conversely, a RUL does not participate to RPL and cannot inject its Host routes in RPL. The RUL therefore needs a Host-to-Router interface to advertise its IPv6 addresses to its access Router so the Router can inject them the RPL network on its behalf. Section 5 details the interface needed by a router that implements this specification. NEW [USEofRPLinfo] introduces the terms RPL-Aware-Leaf (RAL) and RPL- Unaware Leaf (RUL). A RAL is a Leaf that injects Host routes in RPL to manage the reachability of its IPv6 addresses. Conversely, a RUL does not participate to RPL and cannot inject routes. Section 5 details a Host-to-Router interface that the RUL needs to implement to advertise its IPv6 addresses to a Router that supports this specification. The document specifies how the Router injects those addresses as Host Routes in the RPL network on behalf of the RUL. Works? Pascal From nobody Wed Oct 7 10:21:45 2020 Return-Path: X-Original-To: roll@ietfa.amsl.com Delivered-To: roll@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 082CA3A0D37 for ; Wed, 7 Oct 2020 10:21:44 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.899 X-Spam-Level: X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id u5eC_yJ7cJzS for ; Wed, 7 Oct 2020 10:21:42 -0700 (PDT) Received: from tuna.sandelman.ca (tuna.sandelman.ca [IPv6:2607:f0b0:f:3:216:3eff:fe7c:d1f3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 034C73A0CCE for ; Wed, 7 Oct 2020 10:21:41 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by tuna.sandelman.ca (Postfix) with ESMTP id 44027389DF for ; Wed, 7 Oct 2020 13:27:03 -0400 (EDT) Received: from tuna.sandelman.ca ([127.0.0.1]) by localhost (localhost [127.0.0.1]) (amavisd-new, port 10024) with LMTP id QQB0PhL0QJqa for ; Wed, 7 Oct 2020 13:27:02 -0400 (EDT) Received: from sandelman.ca (obiwan.sandelman.ca [IPv6:2607:f0b0:f:2::247]) by tuna.sandelman.ca (Postfix) with ESMTP id 64A0D38994 for ; Wed, 7 Oct 2020 13:27:02 -0400 (EDT) Received: from localhost (localhost [IPv6:::1]) by sandelman.ca (Postfix) with ESMTP id C9857F5 for ; Wed, 7 Oct 2020 13:21:38 -0400 (EDT) From: Michael Richardson To: Routing Over Low power and Lossy networks In-Reply-To: References: <29990.1602008535@localhost> <24976.1602030932@localhost> X-Mailer: MH-E 8.6+git; nmh 1.7+dev; GNU Emacs 26.1 X-Face: $\n1pF)h^`}$H>Hk{L"x@)JS7<%Az}5RyS@k9X%29-lHB$Ti.V>2bi.~ehC0; <'$9xN5Ub# z!G,p`nR&p7Fz@^UXIn156S8.~^@MJ*mMsD7=QFeq%AL4m Archived-At: Subject: Re: [Roll] AD Review of draft-ietf-roll-unaware-leaves-18 X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 07 Oct 2020 17:21:44 -0000 --==-=-= Content-Type: multipart/mixed; boundary="=-=-=" --=-=-= Content-Type: text/plain Pascal Thubert \(pthubert\) wrote: > [USEofRPLinfo] introduces the terms RPL-Aware-Leaf (RAL) and RPL- > Unaware Leaf (RUL). A RAL is a Leaf that injects Host routes in RPL to > manage the reachability of its IPv6 addresses. Conversely, a RUL does > not participate to RPL and cannot inject routes. Section 5 details a > Host-to-Router interface that the RUL needs to implement to advertise > its IPv6 addresses to a Router that supports this specification. The > document specifies how the Router injects those addresses as Host > Routes in the RPL network on behalf of the RUL. I would go on with two additional paragraphs: An RAL is an RPL router node that just happens to have no children, either by design (e.g., it sleeps too much to be useful), or circumstance. An RUL could connect to any mesh network that supports RFC8505, even if it operates with a mesh protocol other than RPL. Assuming of course that the physical layers were compatible: radios types, frequencies, scheduling, etc.. Maybe this is beating people over the head, but I think, in the introduction, that's okay. --=-=-= Content-Type: text/plain Content-Disposition: inline Content-Description: Signature -- ] Never tell me the odds! | ipv6 mesh networks [ ] Michael Richardson, Sandelman Software Works | IoT architect [ ] mcr@sandelman.ca http://www.sandelman.ca/ | ruby on rails [ --=-=-=-- --==-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCgAdFiEEbsyLEzg/qUTA43uogItw+93Q3WUFAl99+SIACgkQgItw+93Q 3WW58gf/UOzZW7iFGYI+dzUm/+3nxUqCzLw0UzJC+/gAPtq3AzVqnZC0Srb6yKmS ifoQ8s02ZFi4AE2TfotMdn/HHl0E5orRNJSk0bBnS8qgT+H1w4nX+ePjsFn2uiXY omwwWyFz+0W8jrWGc8wEjidDAKsSnpxv75LmTzS7tg1YyY4kMGcaaUyL69t4Z3bG RF/dqFQqzOdUeXYTy7pQ8DIQszhY7HUJ3apatGXpmVkTH+c41aaXu4oBHwJ+7APP BjkXwesDw5KanebTmwL4WpyUwzI+Av5mtAeAYFG0wxR8+l2x1KijTBFru9QRKXkG fvJPA8xGwTgXuj0wg3OWrgCS5r/QeQ== =HqPM -----END PGP SIGNATURE----- --==-=-=-- From nobody Thu Oct 8 12:26:45 2020 Return-Path: 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"draft-ietf-roll-unaware-leaves@ietf.org" Cc: "roll-chairs@ietf.org" , Routing Over Low power and Lossy networks , Rahul Jadhav Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Archived-At: Subject: Re: [Roll] AD Review of draft-ietf-roll-unaware-leaves-18 X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 08 Oct 2020 21:10:01 -0000 On October 8, 2020 at 3:26:36 PM, Pascal Thubert wrote: Pascal: Hi! ... > I did not yet go to the end (went 2/3 down) but I need your advice about > updating RFC 8505 at the end of the covered piece. So I thought I should > send you the partial response as of now. In this message I'm just commenting on what is related to updating rfc8505. =C2=A0I'll take a look at the rest later. Thanks! Alvaro. ... > > 494 6. Updating RFC 8505 > > > > [major] To me, Updating an RFC means that the implementations of that > > RFC should also implement this one. In this case, there would be an > > expectation that all 6LRs would support the change. Is that what is > > intended? > > > > Note that Updating is different than simply expecting the nodes that > > implement this specification to comply...in this case, *if* "the RPL > > Root advertise[s] the capability...". > > > > [Personal opinion: rfc8505 applies to 6LRs in general, not just RPL > > routers in particular...so I think that Updating it is not the right > > choice.] > > > > Whao, a difficult one. We update the RFC8505 behavior. > But not to all type of node that implement RFC 8505. Only those that are > RPL Routers. > So what is the most important? That we change the operation of an RFC or > that the change ios scoped to a subset of nodes? IMO, the answer is to make the change that is necessary, and no more. > I'm asking, not proposing and answer. The reason behind is that is anothe= r > RFC updates RFC 8505 with a change that is not compatible, the fact that = we > did not update will make it harder to track. Yes, this is where an "Extends" or at least "See Also" tag would be great [1], but we don't have those. OTOH, the reason we do so many reviews (WG, directorates, IETF LCs, etc.) is to get also cross-area review. =C2=A0This should catch incompatible changes. =C2=A0Yes, I realize this is the ideal situation, and that a change like this may still be missed... :-( The risk is then that the process doesn't work; i.e. that people don't do good reviews. :-( Having said all that, if you (the WG) want to change the behavior for all the nodes, then we'll need positive confirmation from 6lo that this is ok. =C2=A0I seem to remember that there was already communication with 6lo about the proposed changes, and there was no opposition. =C2=A0I can go find that thread again... Given the text in this document (like the sentence below for example -- and what you said above), it doesn't seem to me that making a change for all the nodes (vs. just RPL routers) was the WGs intent. So we'll have to confirm that as well. Also, we'll probably need to generalize the specification to not be specific to RPL. =C2=A0But with any RPL-specific normative behavior highlighted. What do you want to do? [1] https://tools.ietf.org/html/draft-kuehlewind-update-tag > > 496 This document updates [RFC8505] to change the behavior of a RPL > > 497 Router acting as 6LR in the 6LoWPAN ND Address Registration of a > > RUL > > 498 acting as 6LN. If the RPL Root advertise the capability to proxy th= e > > 499 EDAR/EDAC exchange to the 6LBR, the 6LR refrains from sending the > > 500 keep-alive EDAR message. Instead, if it is separated from the 6LBR, > > 501 the Root regenerates the EDAR message to the 6LBR periodically, > > upon > > 502 a DAO message that signals the liveliness of the Address. ... > 12.2. Resizing the ARO Status values ... > > [major] Changing the range of values is not as easy as updating the > > registry...the behavior of the EARO and ARO have to be updated. This > > means that this document should Update both rfc6775 and rfc8505 where > > it relates to the redefined Status field. > > Isn't this transitive? I mean the field defined in RFC 6775 is updated by > RFC 8505. No. =C2=A0As far as I understand it, rfc8505 didn't change the behavior of the ARO, it extended it. =C2=A0In fact, the changes are backward compatible, which tell me that the ARO (independent of an EARO) is still valid and expected to work. =C2=A0I would be happy to be corrected. It may be that no one cares about changes to the ARO anymore...but that is a different conversation. =C2=A0And updating only the EARO seems to break the backward compatibility. > Maybe the 6lo group should clarify that the ARO is deprecated somehow? That would be nice...but that is not what rfc8505 says. 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[Roll] I-D Action: draft-ietf-roll-unaware-leaves-22.txt X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 09 Oct 2020 19:40:31 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Routing Over Low power and Lossy networks WG of the IETF. Title : Routing for RPL Leaves Authors : Pascal Thubert Michael C. Richardson Filename : draft-ietf-roll-unaware-leaves-22.txt Pages : 38 Date : 2020-10-09 Abstract: This specification updates RFC6550, RFC6775, and RFC8505, to provide routing services to RPL Unaware Leaves that implement 6LoWPAN ND and the extensions therein. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-roll-unaware-leaves/ There is also an HTML version available at: https://www.ietf.org/id/draft-ietf-roll-unaware-leaves-22.html A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-roll-unaware-leaves-22 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. 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IFttaW5vcl0gV2hpY2ggb25lIGlzIHRoZSAib3JpZ2luYWwgZXhhbXBsZSIsIHRoaXMgb25lLCBv ciB0aGUgb25lIGluIHJmYzgxMzg/DQoNCkNsYXJpZmllZCB0byB0aGUgaW5lIGluIFJGQyA4MTM4 DQoNCg0KV2hhbywgaXQncyBnZXR0aW5nIGxhdGUuDQoNCk1ldCBtZSBwb3N0IHdoYXQgd2UgaGF2 ZSBhcyBhIG5ldyByZWZlcmVuY2Ugc28geW91IGNhbiBvYnNlcnZlIHRoZSBkaWZmcyBvbiB0aGUg SUVURi4NCg0KVGhpcyBpcyB0aGUgZGVlcGVzdCBhbmQgcHJvYmFibHkgdGhlIG1vc3QgdXNlZnVs IHNpbmdsZSByZXZpZXcgSSBldmVyIGhhcyBpbiBhbG1vc3QgMjAgeWVhcnMgb2YgSUVURiENCg0K U28gbWFueSB0aGFua3MhDQoNClBhc2NhbA0K From nobody Sat Oct 10 15:43:19 2020 Return-Path: X-Original-To: roll@ietfa.amsl.com Delivered-To: roll@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id A0B5E3A09F4; Sat, 10 Oct 2020 15:43:17 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.899 X-Spam-Level: X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 7ZNcmIA6VCCP; Sat, 10 Oct 2020 15:43:15 -0700 (PDT) Received: from tuna.sandelman.ca (tuna.sandelman.ca [IPv6:2607:f0b0:f:3:216:3eff:fe7c:d1f3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 2FB133A09F0; Sat, 10 Oct 2020 15:43:14 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by tuna.sandelman.ca (Postfix) with ESMTP id 0DF9838992; Sat, 10 Oct 2020 18:48:49 -0400 (EDT) Received: from tuna.sandelman.ca ([127.0.0.1]) by localhost (localhost [127.0.0.1]) (amavisd-new, port 10024) with LMTP id t-kShZYf8YM0; Sat, 10 Oct 2020 18:48:48 -0400 (EDT) Received: from sandelman.ca (obiwan.sandelman.ca [IPv6:2607:f0b0:f:2::247]) by tuna.sandelman.ca (Postfix) with ESMTP id 00A6E38983; Sat, 10 Oct 2020 18:48:47 -0400 (EDT) Received: from localhost (localhost [IPv6:::1]) by sandelman.ca (Postfix) with ESMTP id 40F2540A; Sat, 10 Oct 2020 18:43:12 -0400 (EDT) From: Michael Richardson To: Routing Over Low power and Lossy networks cc: "Pascal Thubert \(pthubert\)" , "draft-ietf-roll-unaware-leaves\@ietf.org" , "roll-chairs\@ietf.org" In-Reply-To: References: X-Mailer: MH-E 8.6+git; nmh 1.7+dev; GNU Emacs 26.1 X-Face: $\n1pF)h^`}$H>Hk{L"x@)JS7<%Az}5RyS@k9X%29-lHB$Ti.V>2bi.~ehC0; <'$9xN5Ub# z!G,p`nR&p7Fz@^UXIn156S8.~^@MJ*mMsD7=QFeq%AL4m Archived-At: Subject: Re: [Roll] AD Review of draft-ietf-roll-unaware-leaves-18 X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 10 Oct 2020 22:43:18 -0000 --=-=-= Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Alvaro Retana wrote: > Yes, this is where an "Extends" or at least "See Also" tag would be > great [1], but we don't have those. Yes, but we can still (and should), in the text explain if it's Extends or See Also, right? > [1] https://tools.ietf.org/html/draft-kuehlewind-update-tag It seems we should just sprinkle Updates all over the place just to cover a= ll our bases :-) =2D- Michael Richardson . o O ( IPv6 I=C3=B8T consulti= ng ) Sandelman Software Works Inc, Ottawa and Worldwide --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCgAdFiEEbsyLEzg/qUTA43uogItw+93Q3WUFAl+COP8ACgkQgItw+93Q 3WVK0ggAqfXK0jSQx4gw+MtcNJTyzlZKfIyJSwNUa/umWbFBgiKFF7dzSUq1vUDi WzYF+g0yi+ffXZFgVZ90jhYu+qDaLW4H7JdkINWjDBpyLO5nQqY/G5laVbKbWAVG 1RMURCkm3YlJjRJsNwS7ickUnxTxTssn+xU983+o77lmsF7sxGY3Nr+P7SyKoQFU 5avJ3qTYSNql8j/Xw7atchUU540bVqh2o+Yz1IWawHeX6M88s9AnsL4BRkjc2Apo ooyWMDkZwydxlhbuTM8PjrW0/2Uu05agelozG8WHbtUar/V4fCUCHvI8NGo+h56D 76nSG22UWoRAANgFMKIMsk6B4lcU0Q== =PwEs -----END PGP SIGNATURE----- --=-=-=-- From nobody Sat Oct 10 15:54:19 2020 Return-Path: X-Original-To: roll@ietfa.amsl.com Delivered-To: roll@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id C11483A0A49 for ; Sat, 10 Oct 2020 15:54:17 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.899 X-Spam-Level: X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id u0F-cNjtM5kK for ; Sat, 10 Oct 2020 15:54:16 -0700 (PDT) Received: from tuna.sandelman.ca (tuna.sandelman.ca [209.87.249.19]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id A1D053A0A3D for ; Sat, 10 Oct 2020 15:54:16 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by tuna.sandelman.ca (Postfix) with ESMTP id 1450F389A0 for ; Sat, 10 Oct 2020 18:59:51 -0400 (EDT) Received: from tuna.sandelman.ca ([127.0.0.1]) by localhost (localhost [127.0.0.1]) (amavisd-new, port 10024) with LMTP id aF_EdjpOOT_m for ; Sat, 10 Oct 2020 18:59:50 -0400 (EDT) Received: from sandelman.ca (obiwan.sandelman.ca [209.87.249.21]) by tuna.sandelman.ca (Postfix) with ESMTP id 9808738998 for ; Sat, 10 Oct 2020 18:59:50 -0400 (EDT) Received: from localhost (localhost [IPv6:::1]) by sandelman.ca (Postfix) with ESMTP id CF6BE40A for ; Sat, 10 Oct 2020 18:54:14 -0400 (EDT) From: Michael Richardson To: Routing Over Low power and Lossy networks In-Reply-To: References: X-Mailer: MH-E 8.6+git; nmh 1.7+dev; GNU Emacs 26.1 X-Face: $\n1pF)h^`}$H>Hk{L"x@)JS7<%Az}5RyS@k9X%29-lHB$Ti.V>2bi.~ehC0; <'$9xN5Ub# z!G,p`nR&p7Fz@^UXIn156S8.~^@MJ*mMsD7=QFeq%AL4m Archived-At: Subject: Re: [Roll] AD Review of draft-ietf-roll-unaware-leaves-18 X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 10 Oct 2020 22:54:18 -0000 --=-=-= Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Pascal Thubert \(pthubert\) wrote: > In summary, > We update RFC 6775 and RFC 8505 because we alter the range of the ND = Status Code > We extend RFC 6775 and RFC 8505 because we refrain from sending the > from sending the EDAR on a registration refresh with the 'R' flag. > We extend RFC 6775 because we process the 'R' flag in the NA(EARO) a= nd > other stuff in the RUL perspective section. > Do we agree? agreed. It's a bit of a mess, but making an omlette... I guess there is a book here for someone. =2D- Michael Richardson . o O ( IPv6 I=C3=B8T consulti= ng ) Sandelman Software Works Inc, Ottawa and Worldwide --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCgAdFiEEbsyLEzg/qUTA43uogItw+93Q3WUFAl+CO5YACgkQgItw+93Q 3WX4gQf9GrAZJXQp/nesJnkIPP/gr7SXj8dHTtlGJr9d5wy1+kBH/rwt7NrFheH3 25Js/LJS0HwnJtji6y02u+XATYVPihuoSyu032W1VMw1r3eBksqC6w/7SBoC71t9 N9bXvI4DtM1WRFJ6zmaIyoItERqSD9ufhEZ+L/fQ0yvOBUJQYUvqSFBrJ8YQrGXT l9ek63eU7uk9sS5m4f+3zUb2w6YdRqR7kIPJin32D/SJw0cCHu+voE4TzNoU+bpK ZqtAN2SEX47fq2Cj5bNR1Ipr6X/ZMttu86OmkIDCpDMgV4kdM/BGVtca5dORNeWP eFSTyYqO+jlWLcWg7+ZYObiynjxBfA== =NFS9 -----END PGP SIGNATURE----- --=-=-=-- From nobody Fri Oct 16 17:12:27 2020 Return-Path: X-Original-To: roll@ietfa.amsl.com Delivered-To: roll@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 347153A09E5; Fri, 16 Oct 2020 17:12:18 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.897 X-Spam-Level: X-Spam-Status: No, score=-1.897 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id jiO5iZW2oN4F; Fri, 16 Oct 2020 17:12:15 -0700 (PDT) Received: from gabriel-vm-2.zfn.uni-bremen.de (gabriel-vm-2.zfn.uni-bremen.de [134.102.50.17]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 542423A09E1; Fri, 16 Oct 2020 17:12:14 -0700 (PDT) Received: from [192.168.217.118] (p548dcc60.dip0.t-ipconnect.de [84.141.204.96]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by gabriel-vm-2.zfn.uni-bremen.de (Postfix) with ESMTPSA id 4CCjB85JfFzyX6; Sat, 17 Oct 2020 01:32:48 +0200 (CEST) From: Carsten Bormann Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Mao-Original-Outgoing-Id: 624583968.4660341-164a1ff7930dac7f2dd296bd69893179 Mime-Version: 1.0 (Mac OS X Mail 13.4 \(3608.120.23.2.4\)) Message-Id: <489DEA86-CA59-4390-97D4-E6F73FA6CD0D@tzi.org> Date: Sat, 17 Oct 2020 01:32:48 +0200 To: 6lo@ietf.org, 6tisch@ietf.org, lp-wan@ietf.org, lwip@ietf.org, roll@ietf.org X-Mailer: Apple Mail (2.3608.120.23.2.4) Archived-At: Subject: [Roll] Constrained Node/Network Cluster @ IETF109: DRAFT AGENDA X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 17 Oct 2020 00:12:18 -0000 Here is my usual eclectic condensed agenda based on the DRAFT AGENDA for IETF109. Remember that there is still quite some potential for changes. The conflicts that meet the eye this time seem to impact generalists = only. Great scheduling job! All times *on my agenda* are in UTC (the default page is UTC+0700). https://datatracker.ietf.org/meeting/agenda-utc might be handy. Note that both EU and US are on winter time (standard time) then. Gr=C3=BC=C3=9Fe, Carsten MONDAY, November 9, 2020 0500-0700 Hackathon Kickoff Rm 1 GEN hackathon Hackathon FRIDAY, November 13, 2020 0500-0700 Hackathon Closing Rm 1 GEN hackathon Hackathon MONDAY, November 16, 2020 0500-0700 Session I Rm 1 ART dispatch Dispatch WG - Joint with ARTAREA Rm 3 IRTF qirg Quantum Internet Research Group Rm 5 RTG raw Reliable and Available Wireless WG Rm 6 SEC *** lake Lightweight Authenticated Key Exchange = WG 0730-0830 Session II Rm 3 INT add Adaptive DNS Discovery WG Rm 4 IRTF maprg Measurement and Analysis for Protocols Rm 7 SEC *** cose CBOR Object Signing and Encryption WG 0900-1100 Session III Rm 1 ART jsonpath JSON Path WG Rm 6 SEC secdispatch Security Dispatch WG Rm 7 TSV tsvwg Transport Area Working Group WG TUESDAY, November 17, 2020 0500-0700 Session I Rm 1 ART *** core Constrained RESTful Environments WG Rm 2 INT 6man IPv6 Maintenance WG Rm 7 SEC gnap Grant Negotiation and Authorization = Protocol WG 0730-0830 Session II Rm 5 RTG babel Babel routing protocol WG Rm 6 SEC tls Transport Layer Security WG 0900-1100 Session III Rm 1 ART *** asdf A Semantic Definition Format for Data = and Interactions of Things WG Rm 2 IRTF irtfopen IRTF Open Meeting Rm 4 RTG apn Application-aware Networking BOF Rm 7 SEC *** rats Remote ATtestation ProcedureS WG WEDNESDAY, November 18, 2020 0500-0700 Session I Rm 3 INT madinas MAC Address Device Identification for = Network and Application Services BOF Rm 5 RTG bier Bit Indexed Explicit Replication WG Rm 7 SEC *** ace Authentication and Authorization for = Constrained Environments WG Rm 8 TSV quic QUIC WG 0730-0830 Session II Rm 3 INT *** 6lo IPv6 over Networks of = Resource-constrained Nodes WG Rm 4 INT *** drip Drone Remote ID Protocol WG Rm 7 SEC *** teep Trusted Execution Environment = Provisioning WG Rm 8 TSV tsvwg Transport Area Working Group WG THURSDAY, November 19, 2020 0500-0700 Session I Rm 3 IRTF coinrg Computing in the Network Research Group Rm 7 SEC saag Security Area Open Meeting 0730-0830 Session II Rm 1 ART *** cbor Concise Binary Object Representation = Maintenance and Extensions WG Rm 2 INT intarea Internet Area Working Group WG Rm 3 RTG detnet Deterministic Networking WG Rm 5 SEC acme Automated Certificate Management = Environment WG 0900-1100 Session III Rm 4 OPS v6ops IPv6 Operations WG Rm 6 RTG *** roll Routing Over Low power and Lossy = networks WG Rm 7 SEC mls Messaging Layer Security WG Rm 8 SEC *** rats Remote ATtestation ProcedureS WG FRIDAY, November 20, 2020 0500-0700 Session I Rm 2 INT add Adaptive DNS Discovery WG Rm 6 RTG rift Routing In Fat Trees WG Rm 7 SEC emu EAP Method Update WG 0730-0830 Session II Rm 1 ART httpapi Building Blocks for HTTP APIs WG Rm 2 INT *** lwig Light-Weight Implementation Guidance WG Rm 3 OPS anima Autonomic Networking Integrated Model = and Approach WG Rm 6 SEC *** suit Software Updates for Internet of Things = WG Rm 7 TSV tsvarea Transport Area Open Meeting 0900-1100 Session III Rm 1 ART *** core Constrained RESTful Environments WG Rm 2 INT 6man IPv6 Maintenance WG Rm 4 IRTF cfrg Crypto Forum Rm 7 TSV masque Multiplexed Application Substrate over = QUIC Encryption WG From nobody Wed Oct 21 22:45:28 2020 Return-Path: X-Original-To: roll@ietfa.amsl.com Delivered-To: roll@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 2D65A3A0A9D for ; Wed, 21 Oct 2020 22:45:27 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.096 X-Spam-Level: X-Spam-Status: No, score=-2.096 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=orange.com Received: from mail.ietf.org ([4.31.198.44]) by localhost 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/SDk7QhR8lOJXStmFYUTWwslZmIUTUbx6ctZJ5vjLgta3/Pkvm2CGrbIl5VuGGj8qB bZ+cq4xAQ042e1GMCMTH3SNgHEpYW30Sz8llAtpp7ZUDJPx5ADIlpV98h8kMPAOeqr 4+rMC1MbwH1RsLR9/oORcg8SZ5oLoy/t70RqdiqEsW+kZcQ4QDTJbSq97HllcnO0Gt nW/a3ZORtyPsQ== Received: from Exchangemail-eme6.itn.ftgroup (unknown [xx.xx.13.67]) by opfedar01.francetelecom.fr (ESMTP service) with ESMTP id 4CGxCk6lyhzBrLT for ; Thu, 22 Oct 2020 07:45:22 +0200 (CEST) From: To: Routing Over Low power and Lossy networks Thread-Topic: [Roll] I-D Action: draft-ietf-roll-useofrplinfo-41.txt Thread-Index: AQHWqDaIc3Le6JX9Z0iRSa5F8L9w9w== Date: Thu, 22 Oct 2020 05:45:22 +0000 Message-ID: <924_1603345522_5F911C72_924_396_1_DBB6E52D.7B25E%dominique.barthel@orange.com> References: <160071395471.20401.6949662287254386726@ietfa.amsl.com> <195789.1600714786@dooku> In-Reply-To: Accept-Language: fr-FR, en-US Content-Language: fr-FR X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.7.3.170325 x-originating-ip: [10.114.13.247] Content-Type: text/plain; charset="utf-8" Content-ID: <57A8367BCC1F1140BB309FDB28CA5960@adroot.infra.ftgroup> Content-Transfer-Encoding: base64 MIME-Version: 1.0 Archived-At: Subject: Re: [Roll] I-D Action: draft-ietf-roll-useofrplinfo-41.txt X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 22 Oct 2020 05:45:27 -0000 SGVsbG8gYWxsLA0KDQpJIGp1c3QgbG9va2VkIGF0IGRyYWZ0LWlldGYtcm9sbC11c2VvZnJwbGlu Zm8tNDEudHh0IGFuZCBzcGVjaWZpY2FsbHkgdGhlDQpkaWZmLg0KDQpJIGhhdmUgdGhlIGZvbGxv d2luZyBjb21tZW50czoNCi0gU2VjdGlvbiA0LjM6ICJsZWF2aW5nIHRoZSBmbGFncyByZXNlcnZl ZCBmb3IgTU9QIHZhbHVlIHNldmVuICg3KSIuDQpBY3R1YWxseSwgdGhlcmUgaXMgbm8gbm9ybWF0 aXZlIHRleHQgbGF0ZXIgaW4gdGhlIGRvY3VtZW50IChlLmcuLCBTZWN0aW9uDQoxMSkgdGhhdCBp bXBsZW1lbnRzIHRoaXMuIE1PUCA3IGlzIGluZGVlZCByZXNlcnZlZCAoc2VlIGZvbGxvd2luZyBj 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ESMTP id D9E7A3A1164; Fri, 23 Oct 2020 14:15:50 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: "\"IETF Secretariat\"" To: , Cc: aretana.ietf@gmail.com, roll@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 7.20.0 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <160348775088.5087.1776657777255912614@ietfa.amsl.com> Date: Fri, 23 Oct 2020 14:15:50 -0700 Archived-At: Subject: [Roll] roll - Requested session has been scheduled for IETF 109 X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 23 Oct 2020 21:15:54 -0000 Dear Ines Robles, The session(s) that you have requested have been scheduled. Below is the scheduled session information followed by the original request. roll Session 1 (2:00 requested) Thursday, 19 November 2020, Session III 1600-1800 Room Name: Room 6 size: 506 --------------------------------------------- iCalendar: https://datatracker.ietf.org/meeting/109/sessions/roll.ics Request Information: --------------------------------------------------------- Working Group Name: Routing Over Low power and Lossy networks Area Name: Routing Area Session Requester: Ines Robles Number of Sessions: 1 Length of Session(s): 2 Hours Number of Attendees: 40 Conflicts to Avoid: Chair Conflict: anima manet cellar asdf 6tisch core ace Technology Overlap: rtgarea 6lo 6man lwig cbor t2trg Key Participant Conflict: detnet rtgwg intarea lpwan People who must be present: Michael Richardson Dominique Barthel Alvaro Retana Ines Robles Resources Requested: Special Requests: Additional key participant conflict: paw - that could not be added in the previous list --------------------------------------------------------- From nobody Fri Oct 23 15:42:34 2020 Return-Path: X-Original-To: roll@ietfa.amsl.com Delivered-To: roll@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D810D3A09FD; Fri, 23 Oct 2020 15:42:18 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.897 X-Spam-Level: X-Spam-Status: No, score=-1.897 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id J-_Qm17y-zRP; Fri, 23 Oct 2020 15:42:16 -0700 (PDT) Received: from gabriel-vm-2.zfn.uni-bremen.de (gabriel-vm-2.zfn.uni-bremen.de [134.102.50.17]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id B11E63A09FC; Fri, 23 Oct 2020 15:42:15 -0700 (PDT) Received: from [192.168.217.118] (p548dcc60.dip0.t-ipconnect.de [84.141.204.96]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by gabriel-vm-2.zfn.uni-bremen.de (Postfix) with ESMTPSA id 4CHyjq3fxmzyQH; Fri, 23 Oct 2020 23:56:31 +0200 (CEST) From: Carsten Bormann Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Mao-Original-Outgoing-Id: 625182991.132408-c2261152380bc86385c362db6bd4d422 Mime-Version: 1.0 (Mac OS X Mail 13.4 \(3608.120.23.2.4\)) Message-Id: <043A6453-D612-46EF-B6F0-CCA15B2D5A0F@tzi.org> Date: Fri, 23 Oct 2020 23:56:31 +0200 To: 6lo@ietf.org, 6tisch@ietf.org, lp-wan@ietf.org, lwip@ietf.org, roll@ietf.org X-Mailer: Apple Mail (2.3608.120.23.2.4) Archived-At: Subject: [Roll] Constrained Node/Network Cluster @ IETF109: "FINAL" AGENDA X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 23 Oct 2020 22:42:19 -0000 Here is my usual eclectic condensed agenda based on the "FINAL" AGENDA for IETF109. Remember that further agenda changes can still happen. Very little has changed with respect to the draft agenda. WEBTRANS does meet, and CFRG and IRTFOPEN have been moved around (CFRG now on top of CORE, unfortunately). All times *on my agenda* are in UTC (the default page is UTC+0700). https://datatracker.ietf.org/meeting/agenda-utc might be handy. Note that both EU and US are on winter time (standard time) then. Gr=C3=BC=C3=9Fe, Carsten MONDAY, November 9, 2020 0500-0700 Hackathon Kickoff Rm 1 GEN hackathon Hackathon FRIDAY, November 13, 2020 0500-0700 Hackathon Closing Rm 1 GEN hackathon Hackathon MONDAY, November 16, 2020 0500-0700 Session I Rm 1 ART dispatch Dispatch WG - Joint with ARTAREA Rm 3 IRTF qirg Quantum Internet Research Group Rm 5 RTG raw Reliable and Available Wireless WG Rm 6 SEC *** lake Lightweight Authenticated Key Exchange WG 0730-0830 Session II Rm 2 INT add Adaptive DNS Discovery WG Rm 3 IRTF maprg Measurement and Analysis for Protocols Rm 6 SEC *** cose CBOR Object Signing and Encryption WG 0900-1100 Session III Rm 1 ART jsonpath JSON Path WG Rm 2 ART webtrans WebTransport WG Rm 7 SEC secdispatch Security Dispatch WG Rm 8 TSV tsvwg Transport Area Working Group WG TUESDAY, November 17, 2020 0500-0700 Session I Rm 1 ART *** core Constrained RESTful Environments WG Rm 2 INT 6man IPv6 Maintenance WG Rm 3 IRTF cfrg Crypto Forum Rm 7 SEC gnap Grant Negotiation and Authorization Protocol WG 0730-0830 Session II Rm 5 RTG babel Babel routing protocol WG Rm 6 SEC tls Transport Layer Security WG 0900-1100 Session III Rm 1 ART *** asdf A Semantic Definition Format for Data and = Interactions of Things WG Rm 5 RTG apn Application-aware Networking BOF Rm 8 SEC *** rats Remote ATtestation ProcedureS WG WEDNESDAY, November 18, 2020 0500-0700 Session I Rm 3 INT madinas MAC Address Device Identification for Network = and Application Services BOF Rm 5 RTG bier Bit Indexed Explicit Replication WG Rm 7 SEC *** ace Authentication and Authorization for Constrained = Environments WG Rm 8 TSV quic QUIC WG 0730-0830 Session II Rm 3 INT *** 6lo IPv6 over Networks of Resource-constrained Nodes = WG Rm 4 INT *** drip Drone Remote ID Protocol WG Rm 7 SEC *** teep Trusted Execution Environment Provisioning WG Rm 8 TSV tsvwg Transport Area Working Group WG THURSDAY, November 19, 2020 0500-0700 Session I Rm 3 IRTF coinrg Computing in the Network Research Group Rm 7 SEC saag Security Area Open Meeting 0730-0830 Session II Rm 1 ART *** cbor Concise Binary Object Representation Maintenance = and Extensions WG Rm 2 INT intarea Internet Area Working Group WG Rm 3 RTG detnet Deterministic Networking WG Rm 5 SEC acme Automated Certificate Management Environment WG 0900-1100 Session III Rm 4 OPS v6ops IPv6 Operations WG Rm 6 RTG *** roll Routing Over Low power and Lossy networks WG Rm 7 SEC mls Messaging Layer Security WG Rm 8 SEC *** rats Remote ATtestation ProcedureS WG FRIDAY, November 20, 2020 0500-0700 Session I Rm 2 INT add Adaptive DNS Discovery WG Rm 6 RTG rift Routing In Fat Trees WG Rm 7 SEC emu EAP Method Update WG 0730-0830 Session II Rm 1 ART httpapi Building Blocks for HTTP APIs WG Rm 2 INT *** lwig Light-Weight Implementation Guidance WG Rm 3 OPS anima Autonomic Networking Integrated Model and = Approach WG Rm 6 SEC *** suit Software Updates for Internet of Things WG Rm 7 TSV tsvarea Transport Area Open Meeting 0900-1100 Session III Rm 1 ART *** core Constrained RESTful Environments WG Rm 3 INT 6man IPv6 Maintenance WG Rm 5 IRTF irtfopen IRTF Open Meeting Rm 8 TSV masque Multiplexed Application Substrate over QUIC = Encryption WG From nobody Tue Oct 27 12:50:08 2020 Return-Path: X-Original-To: roll@ietfa.amsl.com Delivered-To: roll@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id CA2DB3A163B; Tue, 27 Oct 2020 12:49:58 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.097 X-Spam-Level: X-Spam-Status: No, score=-2.097 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 7lgSKUQM7R5s; Tue, 27 Oct 2020 12:49:55 -0700 (PDT) Received: from mail-ej1-x630.google.com (mail-ej1-x630.google.com [IPv6:2a00:1450:4864:20::630]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 196F13A1601; Tue, 27 Oct 2020 12:49:40 -0700 (PDT) Received: by mail-ej1-x630.google.com with SMTP id c15so4001999ejs.0; 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Tue, 27 Oct 2020 12:49:37 -0700 (PDT) Received: from 1058052472880 named unknown by gmailapi.google.com with HTTPREST; Tue, 27 Oct 2020 15:49:36 -0400 From: Alvaro Retana In-Reply-To: References: MIME-Version: 1.0 Date: Tue, 27 Oct 2020 15:49:36 -0400 Message-ID: To: "Pascal Thubert (pthubert)" , "draft-ietf-roll-unaware-leaves@ietf.org" Cc: "roll-chairs@ietf.org" , Routing Over Low power and Lossy networks , Rahul Jadhav Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Archived-At: Subject: Re: [Roll] AD Review of draft-ietf-roll-unaware-leaves-18 (cont) X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 27 Oct 2020 19:50:06 -0000 On October 9, 2020 at 3:45:45 PM, Pascal Thubert wrote: Pascal: Hi! ... > I committed the result in the IETF datatracker as draft 22 as a reference > since we made major changes already. I am including 2 parts below. First a reply to this message (specifically to the -21 comments), and then some comments based on -22. =C2=A0In some cases I put comments on -22 simply because it seemed "cleaner" (so not all the comments are new, but a continuation of the discussion). This is a quick list of the major items I want to resolve (MUST) before starting the IETF LC -- I'm putting it here for my own reference, please put any comments inline below and not up here. (1) DCO-ACK Status update and registry. (2) Mention of Update details in the Introduction. (3) Suggested RPL Instance (=C2=A79.2.2). (4) Multicast Operation (=C2=A710). Thanks! Alvaro. =3D=3D=3D Part 1: Reply =3D=3D=3D > > =3D=3D=3D Part 3: remaining comments (based on -18) =3D=3D=3D ... > But we're also merging the statis with the DCO-ACK Status > In that we deprecate > https://www.iana.org/assignments/rpl/rpl.xhtml#rpl-dco-ack-status That is new!! =C2=A0I don't even see DCO-ACK mentioned in the document at a= ll. Does this mean that =C2=A712.5 should also be changed to include the DCO-ACK message in it? > So we should update the NPDAO draft and remove that entry shouldn't we? > Note that NPDAO is already in missref because of this draft > https://www.rfc-editor.org/cluster_info.php?cid=3DC310 Yes. Also, the specification of the DAO-ACK needs to be changed to at least make it clear that the "DCO-ACK Status" field refers to the "RPL Status". About deprecating the registry... =C2=A0We should ask IANA what to do: they already created the registry, but the efficient-npdao hasn't been published as an RFC. =C2=A0I don't know if we just delete =C2=A76.2 or if w= e have to formally deprecate the registry (possible in this document). Please ack to this to make sure we're in sync before asking IANA. ... > > 630 To achieve this, Section 13.2 reduces the range of the EARO Status > > 631 values to 0-63 to ensure that they fit within a RPL Status as shown > > 632 in Figure 3. ... > > [major] What about the ARO? The Status values are shared between the > > EARO and the ARO. > > The IANA update applies to the registry that was created by RFC 6775 and > updated by RFC 8505. > The text actually points at RFC 6775 as the reference for the registry so > we are impacting both ARO and EARO. Yes. =C2=A0The point was that we should mention the ARO here as well: s/EARO Status/ARO/EARO Status > 12.2. Resizing the ARO Status values ... > > [major] Changing the range of values is not as easy as updating the > > registry...the behavior of the EARO and ARO have to be updated. This > > means that this document should Update both rfc6775 and rfc8505 where > > it relates to the redefined Status field. > > Isn't this transitive? I mean the field defined in RFC 6775 is updated by > RFC 8505. No, the updates in rfc8505 are just the ones specified there. It would then de ideal if the Update to cut the size of the Status also said that the rfc6775/rfc8505 nodes MUST ignore the first two bits. =C2=A0Note that by cutting the size of the Status we're really leaving two bits unused/undefined. ... > > 845 10.2.1. Perspective of the RUL Acting as 6LN ... > > 871 4. Following section 5.1 of [RFC8505], a 6LN acting as a RUL sets > > 872 the "R" flag in the EARO of at least one registration, whereas > > 873 acting as a RAN it never does. If the "R" flag is not echoed in > > 874 the NA, the RUL SHOULD attempt to use another 6LR. The RUL > > 875 SHOULD send the registration(s) with the "R" flag set and ensure > > 876 that one succeeds before it sends the registrations with the flag > > 877 reset. In case of a conflict with the preceeding rule on > > 878 lifetime, the rule on lifetime has precedence. > > ... > > [major] "SHOULD send the registration(s) with the "R" flag set and > > ensure that one succeeds before it sends the registrations with the > > flag reset." > > > > This text is in conflict with =C2=A75.1/rfc8505: "MUST set the R flag t= o > > indicate that it is not a router and that it will not handle its own > > reachability". There isn't a provision for a RUL to not set the R > > flag. > > I did not write that text in that meaning. Maybe that's my English. > The text is meant to say that it MUST set the R flag if it wishes to > indicate that it is not a router and blah. Hmm...looking at the whole paragraph, I can see how it could be interpreted that way. =C2=A0In either case, I assume that the intent here is the same: set the R flag if it is not a router, etc...and the RUL is not RPL-aware. Given that this bullet already starts with "Following section 5.1 of [RFC8505], a 6LN acting as a RUL sets the R Flag...", then we don't need to say it again: OLD> =C2=A0 =C2=A04. =C2=A0Following section 5.1 of [RFC8505], a 6LN acting as a= RUL sets =C2=A0 =C2=A0 =C2=A0 =C2=A0the R Flag in the EARO of its registration(s) fo= r which it =C2=A0 =C2=A0 =C2=A0 =C2=A0requires routing services. =C2=A0If the R Flag i= s not echoed in the =C2=A0 =C2=A0 =C2=A0 =C2=A0NA, the RUL SHOULD attempt to use another 6LR. = =C2=A0The RUL SHOULD =C2=A0 =C2=A0 =C2=A0 =C2=A0send the registration(s) with the R Flag set and= ensure that one =C2=A0 =C2=A0 =C2=A0 =C2=A0succeeds before it sends the registrations with = the flag reset. =C2=A0 =C2=A0 =C2=A0 =C2=A0In case of a conflict with the preceding rule on= lifetime, the =C2=A0 =C2=A0 =C2=A0 =C2=A0rule on lifetime has precedence. NEW> =C2=A0 =C2=A04. =C2=A0Following section 5.1 of [RFC8505], a 6LN acting as a= RUL sets =C2=A0 =C2=A0 =C2=A0 =C2=A0the R Flag in the EARO of its registration(s) fo= r which it =C2=A0 =C2=A0 =C2=A0 =C2=A0requires routing services. =C2=A0If the R Flag i= s not echoed in the =C2=A0 =C2=A0 =C2=A0 =C2=A0NA, the RUL SHOULD attempt to use another 6LR. = =C2=A0The RUL SHOULD =C2=A0 =C2=A0 =C2=A0 =C2=A0ensure that one registration succeeds before res= etting the R Flag. =C2=A0 =C2=A0 =C2=A0 =C2=A0In case of a conflict with the preceding rule on= lifetime, the =C2=A0 =C2=A0 =C2=A0 =C2=A0rule on lifetime has precedence. ... > > > > rfc6550 has no information about "pending" DAOs, or how fast the > > DAO-ACK is to be sent. In fact, there is no firm requirement for the > > DAO-ACK to exist, just hope that it does: > > > > - =C2=A76.4/rfc6550: "The DAO message may optionally, upon explicit req= uest or > > error, be acknowledged by its destination with a Destination > > Advertisement Acknowledgement (DAO-ACK) message back to the sender of > > the DAO." > > > > This sentence suggests that the DAO-ACK is optional, even if > > requested, and =C2=A79.3/rfc6550 supports that: > > > > " 3. A node MAY set the 'K' flag in a unicast DAO message to solicit a > > unicast DAO-ACK in response in order to confirm the attempt. > > > > 4. A node receiving a unicast DAO message with the 'K' flag set > > SHOULD respond with a DAO-ACK. A node receiving a DAO message > > without the 'K' flag set MAY respond with a DAO-ACK, especially > > to report an error condition. > > " > > > > Note that "SHOULD respond with a DAO-ACK" leaves the door open to not > > doing it. Unfortunately rfc6550 didn't explicitly mention what may be > > the reasons to not send a DAO-ACK (or not using MUST instead). > > > > In summary, there doesn't seem to be a guarantee that a DAO-ACK will > > be received...which means that the 6LN may be left waiting for a > > response to the registration (the same issues appears to be present > > for a re-registration). > > This is bad, and the practice is that implementations always respond to t= he > K. This is how we know that the route works in non-storing mode. Happy to > add that SHOULD->MUST to the list of thing this spec updates if you think > it is worthwhile. I do...for whenever the time for rfc6550bis comes...no hurry, of course. ... > > 1059 11. Protocol Operations for Multicast Addresses ... > > [major] One Multicast Address per DAO? I think I saw a related > > discussion on the list recently. > > The discussion was for multiple VIOs / TIOs. There can always be multiple > targets. But then, since this is triggered by a message for one address, = I > expect that there will be one DAO at a time. Is there a need for a change= ? The MLDv2 Report can include multiple addresses. =C2=A0In any case, I guess the behavior is the same: if multiple addresses are in the Report, then the DAO can do the same. =C2=A0 I don't think we need a change. ... > > 1230 16. New Subregistry for the RPL Non-Rejection Status values ... > > 1242 +-------+------------------------+-----------+ > > 1243 | Value | Meaning | Reference | > > 1244 +=3D=3D=3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+ > > 1245 | 0 | Unqualified acceptance | RFC 6550 | > > 1246 +-------+------------------------+-----------+ > > > > [major] Let's also add this document as a reference for this initial > > allocation. > > > > Well it is really define in RFC 6550, just remapped here, but OK. [] I meant "add" as in put both. :-) ... > This is the deepest and probably the most useful single review I ever has > in almost 20 years of IETF! :-) =3D=3D=3D Part 2: Comments on -22 =3D=3D=3D ... 11 Abstract 13 =C2=A0 This specification updates RFC6550, RFC6775, and RFC8505, to pro= vide 14 =C2=A0 routing services to RPL Unaware Leaves that implement 6LoWPAN ND= and 15 =C2=A0 the extensions therein. [major] We usually want to see a short description of what the Update is, in both the Abstract and the Introduction. =C2=A0I like the general statement made here, but I need you to add some more details in the Introduction. Perhaps add something like this before the summary of the document's organization: =C2=A0 =C2=A0This document updates rfc6550 by ... (Section x). =C2=A0 =C2=A0This document updates rfc6775 by ... (Section y). =C2=A0 =C2=A0This document updates rfc8505 by ... (Section z). (Maybe a single paragraph can cover changes common to rfc6775/rfc8505.) Yes, it's redundant information, but putting a summary upfront should answer questions later. ... 489 5.1. =C2=A0Support of 6LoWPAN ND ... 513 =C2=A0 [RFC8505] introduces error Status values in the NA(EARO) which = can be 514 =C2=A0 received synchronously upon an NS(EARO) or asynchronously. =C2= =A0The RUL 515 =C2=A0 needs to support both cases and should refrain from using the a= ddress 516 =C2=A0 when the Status Value indicates a rejection (see Section 6.3). [nit] s/support both cases and should refrain/support both cases and refrai= n I believe that the rfc8505 text talks about MUST, so just trying to avoid confusion. ... 579 6.1. =C2=A0Updated RPL Target Option ... 600 =C2=A0 The updated format is illustrated in Figure 3. =C2=A0It is back= ward 601 =C2=A0 compatible with the Target Option in [RFC6550]. =C2=A0It SHOULD= be used as 602 =C2=A0 a replacement in new implementations in all MOPs in preparation= for 603 =C2=A0 upcoming Route Ownership Validation mechanisms based on the ROV= R, 604 =C2=A0 unless the device or the network is so constrained that this is= not 605 =C2=A0 feasible. [major] "SHOULD be used as a replacement in new implementations in all MOPs in preparation for upcoming Route Ownership Validation mechanisms..." Even with the qualification I am uncomfortable normatively recommending something for future use without explicitly mentioning what that is. =C2=A0It just sounds speculative. =C2=A0s/SHOULD/is recommend= ed that the updated format 607 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 1 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 2 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 3 608 =C2=A0 =C2=A0 =C2=A00 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 = 5 6 7 8 9 0 1 609 =C2=A0 =C2=A0 =C2=A0+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-= +-+-+-+-+-+-+-+ [nit] The numbers are not aligned: you need an extra space. ... 625 =C2=A0 ROVRsz (ROVR Size): =C2=A0Indicates the Size of the ROVR. =C2= =A0It MAY be 1, 2, 626 =C2=A0 =C2=A0 =C2=A03, or 4, indicating a ROVR size of 64, 128, 192, o= r 256 bits, 627 =C2=A0 =C2=A0 =C2=A0respectively. =C2=A0A value if 0 thus denotes a le= gacy Target Option. [major] s/MAY be 1, 2, 3, or 4/SHOULD be 1, 2, 3, or 4 [major] What should the receiver do if a different value is used? [major] s/A value if 0 thus denotes a legacy Target Option./If a legacy Target Option is used, then the value must remain 0, as specified in rfc6500. The other way around, saying that 0 =3D legacy creates possible issues with ROVRsz =3D 0 and the F flag set because it clearly is not a legacy target option. 629 =C2=A0 F: =C2=A01-bit flag. =C2=A0Set to indicate that Target Prefix f= ield contains an 630 =C2=A0 =C2=A0 =C2=A0address of prefix advertiser in full. [minor] To be consistent with the text earlier in this section: s/contains an address of prefix advertiser in full./contains the complete (128 bit) IPv6 address of the advertising node. ... 635 6.2. =C2=A0New Flag in the RPL DODAG Configuration Option [] Is this an Update to rfc6550? 637 =C2=A0 The DODAG Configuration Option is defined in Section 6.7.6 of 638 =C2=A0 [RFC6550]. =C2=A0Its purpose is extended to distribute configur= ation 639 =C2=A0 information affecting the construction and maintenance of the D= ODAG, 640 =C2=A0 as well as operational parameters for RPL on the DODAG, through= the 641 =C2=A0 DODAG. =C2=A0As shown in Figure 4, the Option was originally de= signed with 642 =C2=A0 4 bit positions reserved for future use as Flags. [nit] It is not extremely clear, by looking at Figure 4 where the reserved bits are. =C2=A0I had to compare it with the figure in rfc6550 to make sure. s/As shown in Figure 4, the Option/This Option 644 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 1 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 2 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 3 645 =C2=A0 =C2=A0 =C2=A00 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 = 5 6 7 8 9 0 1 646 =C2=A0 =C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-= +-+-+-+-+ 647 =C2=A0 =C2=A0 | =C2=A0 Type =3D 0x04 |Opt Length =3D 14| |P| | |A| =C2= =A0 =C2=A0 =C2=A0 ... =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | 648 =C2=A0 =C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 + 649 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <- Flags -> 651 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Figure 4: DODAG Configuration= Option (Partial View) ... 663 =C2=A0 Section 4.3 of [USEofRPLinfo] updates [RFC6550] to indicate tha= t the 664 =C2=A0 definition of the Flags applies to Mode of Operation (MOP) valu= es 665 =C2=A0 zero (0) to six (6) only. =C2=A0For a MOP value of 7, the Root = is expected 666 =C2=A0 to perform the proxy operation by default. [major] "is expected" =C2=A0Does that mean MUST/SHOULD? 668 =C2=A0 The RPL DODAG Configuration Option is typically placed in a DOD= AG 669 =C2=A0 Information Object (DIO) message. =C2=A0The DIO message propaga= tes down 670 =C2=A0 the DODAG to form and then maintain its structure. =C2=A0The DO= DAG 671 =C2=A0 Configuration Option is copied unmodified from parents to child= ren. 672 =C2=A0 [RFC6550] states that "Nodes other than the DODAG Root MUST NOT 673 =C2=A0 modify this information when propagating the DODAG Configuratio= n 674 =C2=A0 option". =C2=A0Therefore, a legacy parent propagates the T Flag= as set by 675 =C2=A0 the Root, and when the T Flag is set, it is transparently flood= ed to 676 =C2=A0 all the nodes in the DODAG. [minor] s/T Flag/'P' bit 678 6.3. =C2=A0Updated RPL Status ... 726 =C2=A0 When building a DCO or a DAO-ACK message upon an IPv6 ND NA or = a EDAC 727 =C2=A0 message, the RPL Root MUST copy the 6LoWPAN ND Status Code unch= anged 728 =C2=A0 in the RPL Status Value and set the 'A' flag. =C2=A0The RPL Roo= t MUST set 729 =C2=A0 the 'E' flag for all rejection and unknown Status Codes. =C2=A0= The Status 730 =C2=A0 Codes in range 1-10 [RFC8505] are all considered rejections. [nit] s/in range 1-10/in the 1-10 range [major] What should a receiver do if the E flag is not set for Status Codes in that range? =C2=A0It almost feels like this flag is mostly informational; IOW, if it's not set, and a node receives 1-10, it is still a rejection. =C2=A0Maybe we don't have to specify anything... ... 737 7. =C2=A0Enhancements to draft-ietf-roll-efficient-npdao 739 =C2=A0 [EFFICIENT-NPDAO] defines the DCO message for RPL Storing Mode = only, 740 =C2=A0 with a link-local scope. =C2=A0All nodes in the RPL network are= expected 741 =C2=A0 to support the specification since the message in processed hop= by 742 =C2=A0 hop along the path this is being cleaned up. [nit] s/message in processed/message is processed ... 787 9.1. =C2=A0General Flow ... 806 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 6LN/RUL =C2=A0 <-ND-> =C2=A0 6LR = =C2=A0 <-RPL-> =C2=A0Root =C2=A0 <-ND-> =C2=A0 =C2=A0 6LBR 807 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = | 808 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 NS(EARO) =C2= =A0 =C2=A0 | =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | 809 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0|--------------->| =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| 810 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Exte= nded DAR =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| 811 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0|--------------------------------->| 812 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0| 813 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Exte= nded DAC =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| 814 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0|<---------------------------------| [minor] Indicating the protocol at the top is nice. =C2=A0ND is used between the 6LR and the 6LBR to start. ... 832 =C2=A0 ITo achieve this, the Path Sequence and the Path Lifetime in th= e DAO 833 =C2=A0 message are taken from the Transaction ID and the Address 834 =C2=A0 Registration lifetime in the NS(EARO) message from the 6LN. [nit] s/ITo/To ... 923 9.2.1. =C2=A0Perspective of the 6LN Acting as RUL ... 942 =C2=A0 3. =C2=A0As stated in section 5.2 of [RFC8505], the 6LN can reg= ister to 943 =C2=A0 =C2=A0 =C2=A0 more than one 6LR at the same time. =C2=A0In that= case, it uses the 944 =C2=A0 =C2=A0 =C2=A0 same EARO for all of the parallel Address Registr= ations, with the 945 =C2=A0 =C2=A0 =C2=A0 exception of the Registration Lifetime field and = the setting of 946 =C2=A0 =C2=A0 =C2=A0 the R flag that may differ. =C2=A0The 6LN SHOULD = send the NS(EARO), if 947 =C2=A0 =C2=A0 =C2=A0 any, that maintain a registration active (i.e., w= ith a non-zero 948 =C2=A0 =C2=A0 =C2=A0 Registration Lifetime) and ensure that one succee= ds before it 949 =C2=A0 =C2=A0 =C2=A0 sends an NS(EARO) that terminates another registr= ation, to avoid 950 =C2=A0 =C2=A0 =C2=A0 the churn related to transient route invalidation= in the RPL 951 =C2=A0 =C2=A0 =C2=A0 network. [minor] s/The 6LN SHOULD send...transient route invalidation in the RPL network./To avoid churn related to transient route invalidation, the 6LN SHOULD send the NS(EARO) to maintain the registration active (i.e., with a non-zero Registration Lifetime). ... 984 9.2.2. =C2=A0Perspective of the 6LR Acting as Border Router ... 1014 =C2=A0 If there is no suggested RPL Instance or else if the 6LR does = not 1015 =C2=A0 participate to the suggested Instance, it is expected that the 1016 =C2=A0 packets coming from the 6LN "can unambiguously be associated t= o at 1017 =C2=A0 least one RPL Instance" [RFC6550] by the 6LR. [major] Is the intent that this paragraph applies to both the RPL Instance in the EARO and in the RPI?? =C2=A0I ask because it says that the 6LR can ignore the Instance. =C2=A0I have an issue with it because the text in rfc6550 says this (from =C2=A75: RPL Instance): =C2=A0 =C2=A0The definition and provisioning of RPL Instances are out of sc= ope for =C2=A0 =C2=A0this specification. =C2=A0Guidelines may be application and im= plementation =C2=A0 =C2=A0specific, and they are expected to be elaborated in future com= panion =C2=A0 =C2=A0specifications. =C2=A0Those operations are expected to be such= that data =C2=A0 =C2=A0packets coming from the outside of the RPL network can unambig= uously =C2=A0 =C2=A0be associated to at least one RPL Instance and be safely route= d over =C2=A0 =C2=A0any instance that would match the packet. =C2=A0 =C2=A0Control and data packets within RPL network are tagged to =C2=A0 =C2=A0unambiguously identify of which RPL Instance they are a part. This second paragraph is specific in saying that if the RPL Instance is included in a control/data packet, then that is the unambiguous identifier. (1) If we're talking about the Instance in the EARO: This may be a stretch, but I can see the argument about ND not being a RPL control packet -- thus not covered by rfc6550. =C2=A0I can of course see the other side too: signaling RPL information in a control packet makes the text applicable. =C2=A0?? (2) OTOH, if we're talking about the Instance in the RPI, that is in conflict with rfc6550 (=C2=A711.2.2.1): =C2=A0 =C2=A0If any node cannot forward a packet along the DODAG associated= with =C2=A0 =C2=A0the RPLInstanceID, then the node SHOULD discard the packet and= send =C2=A0 =C2=A0an ICMP error message. The text only recommends discarding -- is this case (RPI from a RUL) a valid reason to not discard? =C2=A0If that is the case, then something still needs to be done about the RPI...maybe remove or modify it. =C2=A0I looked at UseofRPLInfo but all the cases assume that the RUL doesn't attach the RPI. =C2=A0Should that document cover the RUL sending an RPI? ... 1141 =C2=A0 The 6LR may at any time send a unicast asynchronous NA(EARO) w= ith the 1142 =C2=A0 R Flag reset to signal that it stops providing routing service= s, and/ 1143 =C2=A0 or with the EARO Status 2 "Neighbor Cache full" to signal that= it 1144 =C2=A0 removes the NCE. =C2=A0It may also send a final RA, unicast or= multicast, 1145 =C2=A0 with a Router Lifetime field of zero, to signal that it stops = serving 1146 =C2=A0 as Router, as specified in section 6.2.5 of [RFC4861]. =C2=A0T= his may 1147 =C2=A0 happen upon a DCO or a DAO-ACK message indicating the path is = already 1148 =C2=A0 removed; else the 6LR SHOULD remove the Host route to the 6LN = using a 1149 =C2=A0 DAO message with a Path Lifetime of zero. [major] There are other places where the 6LR has to remove the route, but this is the only one with a SHOULD. =C2=A0Why? =C2=A0Is there a reason = why removal is not required here? =C2=A0Note that the text says "else...", so if we got to this point I would assume the the 6LR is required to remove the route. ... 1216 10. =C2=A0Protocol Operations for Multicast Addresses 1218 =C2=A0 Section 12 of [RFC6550] details the RPL support for multicast = flows. 1219 =C2=A0 This support is not source-specific and only operates as an ex= tension 1220 =C2=A0 to the Storing Mode of Operation for unicast packets. =C2=A0No= te that it 1221 =C2=A0 is the RPL model that the multicast packet is passed as a Laye= r-2 1222 =C2=A0 unicast to each of the interested children. =C2=A0This remains= true when 1223 =C2=A0 forwarding between the 6LR and the listener 6LN. [major] Is this functionality mandatory or optional? =C2=A0Should the 6LR have an option to not "translate" the MLD reports into DAOs? [major] The description here provides the details that =C2=A712/rfc6550 didn't; do you expect this to be a formal Update to rfc6550, or just an extension for nodes supporting this specification? =C2=A0Either way, at least point at this section from =C2=A76. 1225 =C2=A0 "Multicast Listener Discovery Version 2 (MLDv2) for IPv6" [RFC= 3810] 1226 =C2=A0 provide an interface for a listener to register to multicast f= lows. 1227 =C2=A0 In the MLD model, the Router is a "querier", and the Host is a 1228 =C2=A0 multicast listener that registers to the querier to obtain cop= ies of 1229 =C2=A0 the particular flows it is interested in. [nit] s/provide an interface/provides an interface ... 1252 =C2=A0 Upon a DAO with a Target option for a multicast address, the R= PL Root 1253 =C2=A0 checks if it is already registered as a listener for that addr= ess, 1254 =C2=A0 and if not, it performs its own unsolicited Report for the mul= ticast 1255 =C2=A0 address as sescribed in section 5.1 of [RFC3810]. =C2=A0The re= port is 1256 =C2=A0 source independent, so there is no Source Address listed. [nit] s/sescribed/described [minor] MLDv2 includes source addresses in the Reports, but that can't be "translated" into RPL. =C2=A0What are the downsides? =C2=A0I'm thinking = that a RUL can try to subscribe to a specific (S,G), but will get (*,G) instead; if the traffic level is too high then it could overwhelm the RUL, and even cause other issues in the rest of the LLN: potentially high link utilization, waste of energy, etc.. =C2=A0 It may be nice to mention it. 1258 =C2=A0 =C2=A0 =C2=A06LN/RUL =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A06LR =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Root =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 6LBR 1259 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 | =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 | 1260 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | unsolicited Report | =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | 1261 =C2=A0 =C2=A0 =C2=A0 =C2=A0 |------------------->| =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | 1262 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 | =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | [minor] Please remove the "". ... 1321 11. =C2=A0Security Considerations ... 1368 =C2=A0 The Opaque field in the EARO enables the RUL to suggest a 1369 =C2=A0 RPLInstanceID where its traffic is placed. =C2=A0This opens to= attacks 1370 =C2=A0 where a RPL instance would be reserved for critical traffic, e= .g., 1371 =C2=A0 with a specific bandwidth reservation, that the additional tra= ffic 1372 =C2=A0 generated by a rogue may disrupt. =C2=A0This may be alleviated= by 1373 =C2=A0 traditional access control mechanisms where the 6LR shapes the 1374 =C2=A0 incoming traffic from the 6LN. [minor] "The Opaque field in the EARO enables..." =C2=A0True, but it is worst than that: the RUL can also build an RPI with the RPL Instance in it. And there's a combination: put one value in the Opaque field for "normal" traffic and use the RPI for other traffic. =C2=A0This would make management of the system even harder when trying to trace where the traffic went: the 6LN expects to put the traffic in the RPL Instance indicated by the Opaque field, but the RPI says something else. =C2=A0I imagine this is possible. Traffic shaping may help reduce the impact (assuming a certain amount of traffic), but there may be actions the rogue node could take with a relatively low number of packets. =C2=A0IOW, I don't think that shaping should be the only suggestion; we should include blocking as well. ... 1382 =C2=A0 [EFFICIENT-NPDAO] introduces the ability for a rogue common an= cestor 1383 =C2=A0 node to invalidate a route on behalf of the target node. =C2= =A0In that 1384 =C2=A0 case, the RPL Status in the DCO has the 'A' flag not set, and = a 1385 =C2=A0 NA(EARO) is returned to the 6LN with the R flag not set. =C2= =A0This 1386 =C2=A0 encourages the 6LN to try another 6LR. =C2=A0If a 6LR exists t= hat does not 1387 =C2=A0 use the rogue common ancestor, then the 6LN will eventually su= cceed 1388 =C2=A0 gaining reachability over the RPL network in spite of the rogu= e node. [minor] s/In that case/In this case ... 1398 12.2. =C2=A0Resizing the ARO Status values ... 1405 =C2=A0 IANA is requested modify the Address Registration Option Statu= s 1406 =C2=A0 Values Registry so that the upper bound of the unassigned valu= es is 1407 =C2=A0 63. =C2=A0This document should be added as a reference. =C2=A0= The registration 1408 =C2=A0 procedure does not change. [nit] s/requested modify/requested to modify 1410 12.3. =C2=A0New DODAG Configuration Option Flag 1412 =C2=A0 This specification updates the Registry that was created for 1413 =C2=A0 [RFC6550] as the registry for "DODAG Configuration Option Flag= s" and 1414 =C2=A0 updated as the registry for "DODAG Configuration Option Flags = for MOP 1415 =C2=A0 0..6" by [USEofRPLinfo], by allocating one new Flag as follows= : [major] NEW> =C2=A0 =C2=A0IANA is requested to assign a flag from the "DODAG Configurati= on Option =C2=A0 =C2=A0Flags for MOP 0..6" [USEofRPLinfo] registry as follows: ... 1425 12.4. =C2=A0RPL Target Option Registry 1427 =C2=A0 Section 20.15 of [RFC6550] creates a Registry for the 8-bit "R= PL 1428 =C2=A0 Target Option Flags" field. =C2=A0IANA is requested to reduce = the size of 1429 =C2=A0 the field in the Registry to 4 bits. =C2=A0Section 6.1 also de= fines a new 1430 =C2=A0 entry in the Registry as follows: [major] NEW> =C2=A0 =C2=A0This document modifies the "RPL Target Option Flags" registry = initially =C2=A0 =C2=A0created in Section 20.15 of [RFC6550]. The registry now includ= es only 4- =C2=A0 =C2=A0bits (Section 6.1) and should point to this document as an add= itional =C2=A0 =C2=A0reference. The registration procedure doesn't change. =C2=A0 =C2=A0Section 6.1 also defines a new entry in the Registry as follow= s: From nobody Wed Oct 28 02:14:11 2020 Return-Path: X-Original-To: roll@ietfa.amsl.com Delivered-To: roll@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 849123A07C3; Wed, 28 Oct 2020 02:14:10 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -9.587 X-Spam-Level: X-Spam-Status: No, score=-9.587 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HTML_MESSAGE=0.001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_PASS=-0.001, T_KAM_HTML_FONT_INVALID=0.01, URIBL_BLOCKED=0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=cisco.com header.b=Vbj0vPK8; dkim=pass (1024-bit key) header.d=cisco.onmicrosoft.com header.b=0fyLgAnz Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id QwalShjBe1Zw; 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boundary="_000_CY4PR11MB13521CF8420BF542D94557F4D8170CY4PR11MB1352namp_" MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: CY4PR11MB1352.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: c1e65027-ba9a-4c08-25fe-08d87b21d1b7 X-MS-Exchange-CrossTenant-originalarrivaltime: 28 Oct 2020 09:14:05.4293 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 5ae1af62-9505-4097-a69a-c1553ef7840e X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: uMd0Achv47aJrbY9/PQQmmyDrsGVrPmqNk7pVjJHPTkjhS1/azvPONlSWTAQGQ42yjJm3gDbLvizldxbE70JYA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR11MB1463 X-OriginatorOrg: cisco.com X-Outbound-SMTP-Client: 173.36.7.14, xch-aln-004.cisco.com X-Outbound-Node: rcdn-core-12.cisco.com Archived-At: Subject: [Roll] Deprecating DCO status X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 28 Oct 2020 09:14:11 -0000 --_000_CY4PR11MB13521CF8420BF542D94557F4D8170CY4PR11MB1352namp_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hello Rahul: Attracting your attention on the particular point below in Alvaro's AD revi= ew of unaware leaves: > > So we should update the NPDAO draft and remove that entry shouldn't we? > > Note that NPDAO is already in missref because of this draft > > https://www.rfc-editor.org/cluster_info.php?cid=3DC310 > > Yes. > > Also, the specification of the DAO-ACK needs to be changed to at least ma= ke it > clear that the "DCO-ACK Status" field refers to the "RPL Status". > > About deprecating the registry... We should ask IANA what to do: they al= ready > created the registry, but the efficient-npdao hasn't been published as an > RFC. I don't know if we just delete =A76.2 or if we have to formally dep= recate the > registry (possible in this document). > > Please ack to this to make sure we're in sync before asking IANA. The change Alvaro and I want to make in the efficient npdao draft is that t= he DCO status is now of the same type as the RPL status in DAO ACK, and sho= uld be specified as such in https://tools.ietf.org/html/draft-ietf-roll-eff= icient-npdao-18#section-4.3.4 Which means that we do not need the registry that we ask for in https://too= ls.ietf.org/html/draft-ietf-roll-efficient-npdao-18#page-17 Do you agree? Keep safe! Pascal --_000_CY4PR11MB13521CF8420BF542D94557F4D8170CY4PR11MB1352namp_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Hello Rahul:

 

Attracting your attention on the particular point below in A= lvaro’s AD review of unaware leaves:

 

> > So we should update the NPDAO draft and remove = that entry shouldn't we?

> > Note that NPDAO is already in missref because o= f this draft

> > https:/= /www.rfc-editor.org/cluster_info.php?cid=3DC310

>

> Yes.

>

> Also, the specification of the DAO-ACK needs to be c= hanged to at least make it

> clear that the "DCO-ACK Status" field refe= rs to the "RPL Status".

>

> About deprecating the registry...  We should as= k IANA what to do: they already

> created the registry, but the efficient-npdao hasn't= been published as an

> RFC.  I don't know if we just delete =A76.2 or = if we have to formally deprecate the

> registry (possible in this document).

>

> Please ack to this to make sure we're in sync before= asking IANA.

 

The change Alvaro and I want to make in the efficient npd= ao draft is that the DCO status is now of the same type as the RPL status i= n DAO ACK, and should be specified as such in https://tools.ietf.org/html/draft-ietf-roll-efficient-npdao-18#section-4.3.= 4

Which means that we do not need the registry that we ask = for in https://tools.ietf.org/html/draft-ietf-roll-efficient-npdao-18#page-17<= o:p>

 

Do you agree?

 

Keep safe!

 

Pascal

 

--_000_CY4PR11MB13521CF8420BF542D94557F4D8170CY4PR11MB1352namp_-- From nobody Wed Oct 28 05:43:46 2020 Return-Path: X-Original-To: roll@ietfa.amsl.com Delivered-To: roll@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 568EE3A0A06; Wed, 28 Oct 2020 05:43:41 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.087 X-Spam-Level: X-Spam-Status: No, score=-2.087 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_HTML_ATTACH=0.01, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id GAtNnDIjsA8g; Wed, 28 Oct 2020 05:43:38 -0700 (PDT) Received: from mail-ej1-x635.google.com (mail-ej1-x635.google.com [IPv6:2a00:1450:4864:20::635]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 32A493A09FC; Wed, 28 Oct 2020 05:43:38 -0700 (PDT) Received: by mail-ej1-x635.google.com with SMTP id h24so6961124ejg.9; Wed, 28 Oct 2020 05:43:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=o8T5dNsHazI72A7v9ODmqI4526kL0trY8BsEr/No7ZQ=; b=POKGMjnKMmeEuhhuNGQrRDqbZzTdmKNlQZaZ0iv/+BmhUMQXdAp2BfQ2mAsCDkuOGX W7UGqTFV8aqySUKOq4iZ84URTERJuryvDcpesFOkEHCGBfo2sFLf29EJMsf8NVHYI/mh zT/Xv8LkEzLCj59ME1eKo8SBAC/UjR44mHA4rBBea90WbtiVvHKFI88gIlPQUDTo+lnn 7qQccei/0quFd9kJdhqFyZBTBwWprY953+G/+vvuYTgFmhuEhnFcz6k+Xmd0VjUrRMuv LpSlSw4+WuI/hQ29UAl+7MUYqbmPFb2X6BQmmRQ0NVd0GRILZ8foc9Gy8eSdwgcV68fc 3aOA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=o8T5dNsHazI72A7v9ODmqI4526kL0trY8BsEr/No7ZQ=; b=eHO+Sk65bDWdWwl91SE1zryyTcOkjtyx8qQAKHIcqJXhjJ54Y1QVk+GzyRtGigti/z oYODnmM7V4YnTXIxegX1B4Wc6dvKnQMJxQO5f6LsGGSmC4AOnj1AP8ZXatlriS7ZieXQ QJk9b0IgpDmWpC/VhSOg9qmVq5CoaiA/s5m4Ns4sIUnJz54nH9Her4vUI88GiBTx62eH A+S5F2PaE44K9NDSn3MqjzF6sEkBFwyYtpwaCRdQ536cy1BblGJ9GB/LG6tH24sgDGAV jL7zObsFGn6GHFjtRXqmSV/RttCfh4JjBnVyyYIGf7HrtM983yiwKeMznRcBpBGbcUth p5Aw== X-Gm-Message-State: AOAM533YrGfhkosl+UsfN+daz92r3se5eNGGqgpat2UWqm54LheDY/I2 xHY/H/UAfL1sc8+CZ8ofDTJEYOsbWGq2nnhdeYLfHT0F90I= X-Google-Smtp-Source: ABdhPJwRSC4Y9EdKQedUEKyfg+LLYeCbrlvkisDsq+eeZjHSmmHn95xaT9tn7CR7EwY6FjAsZPxZ3Pis7baT1vZefAQ= X-Received: by 2002:a17:906:3689:: with SMTP id a9mr7284846ejc.403.1603889016629; Wed, 28 Oct 2020 05:43:36 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Rahul Jadhav Date: Wed, 28 Oct 2020 18:13:25 +0530 Message-ID: To: "Pascal Thubert (pthubert)" Cc: Alvaro Retana , "roll-chairs@ietf.org" , Routing Over Low power and Lossy networks Content-Type: multipart/mixed; boundary="0000000000001892e305b2ba8349" Archived-At: Subject: Re: [Roll] Deprecating DCO status X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 28 Oct 2020 12:43:42 -0000 --0000000000001892e305b2ba8349 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Pascal, Alvaro, I am mostly clear on the changes required. Please find attached an HTML-diff for the suggested changes. The only concern for me was if we remove the registry where would the Status 1 indicating "No routing-entry for the indicated Target found". But I see that unaware-leaves has made an update to its IANA section to include this status. So it works. Thus, I am referencing unaware-leaves for Status values. Regards, Rahul On Wed, 28 Oct 2020 at 14:44, Pascal Thubert (pthubert) wrote: > > Hello Rahul: > > > > Attracting your attention on the particular point below in Alvaro=E2=80= =99s AD review of unaware leaves: > > > > > > So we should update the NPDAO draft and remove that entry shouldn't w= e? > > > > Note that NPDAO is already in missref because of this draft > > > > https://www.rfc-editor.org/cluster_info.php?cid=3DC310 > > > > > > Yes. > > > > > > Also, the specification of the DAO-ACK needs to be changed to at least = make it > > > clear that the "DCO-ACK Status" field refers to the "RPL Status". > > > > > > About deprecating the registry... We should ask IANA what to do: they = already > > > created the registry, but the efficient-npdao hasn't been published as = an > > > RFC. I don't know if we just delete =C2=A76.2 or if we have to formall= y deprecate the > > > registry (possible in this document). > > > > > > Please ack to this to make sure we're in sync before asking IANA. > > > > The change Alvaro and I want to make in the efficient npdao draft is that= the DCO status is now of the same type as the RPL status in DAO ACK, and s= hould be specified as such in https://tools.ietf.org/html/draft-ietf-roll-e= fficient-npdao-18#section-4.3.4 > > Which means that we do not need the registry that we ask for in https://t= ools.ietf.org/html/draft-ietf-roll-efficient-npdao-18#page-17 > > > > Do you agree? > > > > Keep safe! > > > > Pascal > > --0000000000001892e305b2ba8349 Content-Type: text/html; charset="US-ASCII"; name="diff-draft-ietf-roll-efficient-npdao.html" Content-Disposition: attachment; filename="diff-draft-ietf-roll-efficient-npdao.html" Content-Transfer-Encoding: base64 Content-ID: X-Attachment-Id: f_kgtdir9l0 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Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 28 Oct 2020 15:17:12 -0000 --0000000000002cd3bd05b2bca879 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi! The last part (=E2=80=9CThis specification adds=E2=80=A6=E2=80=9D) is not c= orrect, as unaware-leaves is the one defining the value. Maybe =E2=80=9CThis specific= ation uses=E2=80=A6=E2=80=9D would be more appropriate. Rahul: Please don=E2=80=99t submit anything yet. Because IANA already cre= ated the registry (from the efficient-npdao draft), I want to check with them what is the right thing to do: if we just delete the registry, or if we need to leave it and deprecate it somehow. Thanks! Alvaro. On October 28, 2020 at 11:06:39 AM, Pascal Thubert (pthubert) ( pthubert@cisco.com) wrote: Hello Rahul I believe that you need to indicate that the status is a RPL Status and refer to section 6.5.1. of RPL " Format of the DAO-ACK Base Object". I'm sure Alvaro will propose an improvement but my knee jerk: Before: Status: Indicates the completion status. Section 12.5 of [I-D.ietf-roll-unaware-leaves] defines the status values. A value of 0 is defined as unqualified acceptance. A value of 1 is defined as "No routing-entry for the indicated Target found". After: Status: RPL Status indicating the completion. The RPL Status is defined in section 6.5.1. of [RFC 6550] and updated in section 6.3 of [I-D.ietf-roll-unaware-leaves]. This specification adds the RPL rejection value ('E' flag set and 'A' flag not set) of 1, defined as "No routing-entry for the indicated Target found". Works? Take care; Pascal > -----Original Message----- > From: Rahul Jadhav > Sent: mercredi 28 octobre 2020 13:43 > To: Pascal Thubert (pthubert) > Cc: Alvaro Retana ; roll-chairs@ietf.org; Routing > Over Low power and Lossy networks > Subject: Re: Deprecating DCO status > > Hi Pascal, Alvaro, > > I am mostly clear on the changes required. Please find attached an HTML-diff > for the suggested changes. > The only concern for me was if we remove the registry where would the Status > 1 indicating "No routing-entry for the indicated Target found". > But I see that unaware-leaves has made an update to its IANA section to > include this status. So it works. > Thus, I am referencing unaware-leaves for Status values. > > Regards, > Rahul > > On Wed, 28 Oct 2020 at 14:44, Pascal Thubert (pthubert) > wrote: > > > > Hello Rahul: > > > > > > > > Attracting your attention on the particular point below in Alvaro=E2=80= =99s AD review > of unaware leaves: > > > > > > > > > > So we should update the NPDAO draft and remove that entry shouldn't > we? > > > > > > Note that NPDAO is already in missref because of this draft > > > > > > https://www.rfc-editor.org/cluster_info.php?cid=3DC310 > > > > > > > > > > Yes. > > > > > > > > > > Also, the specification of the DAO-ACK needs to be changed to at > > > least make it > > > > > clear that the "DCO-ACK Status" field refers to the "RPL Status". > > > > > > > > > > About deprecating the registry... We should ask IANA what to do: > > > they already > > > > > created the registry, but the efficient-npdao hasn't been published > > > as an > > > > > RFC. I don't know if we just delete =C2=A76.2 or if we have to formal= ly > > > deprecate the > > > > > registry (possible in this document). > > > > > > > > > > Please ack to this to make sure we're in sync before asking IANA. > > > > > > > > The change Alvaro and I want to make in the efficient npdao draft is > > that the DCO status is now of the same type as the RPL status in DAO > > ACK, and should be specified as such in > > https://tools.ietf.org/html/draft-ietf-roll-efficient-npdao-18#section > > -4.3.4 > > > > Which means that we do not need the registry that we ask for in > > https://tools.ietf.org/html/draft-ietf-roll-efficient-npdao-18#page-17 > > > > > > > > Do you agree? > > > > > > > > Keep safe! > > > > > > > > Pascal > > > > --0000000000002cd3bd05b2bca879 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable =

Hi!

The last part = (=E2=80=9CThis specification adds=E2=80=A6=E2=80=9D) is not correct, as una= ware-leaves is the one defining the value.=C2=A0 Maybe =E2=80=9CThis specif= ication uses=E2=80=A6=E2=80=9D would be more appropriate.


Rahul: =C2=A0Please don=E2=80=99t submit anything ye= t.=C2=A0 Because IANA already created the registry (from the efficient-npda= o draft), I want to check with them what is the right thing to do: if we ju= st delete the registry, or if we need to leave it and deprecate it somehow.= =C2=A0

Thanks!

Alvaro.

On October 28, 2020 at 11:06:39 AM, Pascal Thubert= (pthubert) (pthubert@cisco.com) = wrote:

Hello Rahul

I believe that you need to indicate that the status is a RPL Status and= refer to section 6.5.1. of RPL " Format of the DAO-ACK Base Object&q= uot;. I'm sure Alvaro will propose an improvement but my knee jerk:

Before:

Status: Indicates the completion status. Section 12.5 of [I-D.ietf-rol= l-unaware-leaves] defines the status values. A value of 0 is defined as un= qualified acceptance. A value of 1 is defined as "No routing-entry f= or the indicated Target found".

After: =20

Status: RPL Status indicating the completion. The RPL Status is defined= in section 6.5.1. of [RFC 6550] and updated in =20
section 6.3 of [I-D.ietf-roll-unaware-leaves]. This specification adds= the RPL rejection value ('E' flag set and 'A' flag not set= ) of 1, defined as "No routing-entry for the indicated Target found&q= uot;.

Works?

Take care;

Pascal


> -----Original Message-----
> From: Rahul Jadhav <rah= ul.ietf@gmail.com>
> Sent: mercredi 28 octobre 2020 13:43
> To: Pascal Thubert (pthubert) <pthubert@cisco.com>
> Cc: Alvaro Retana <ar= etana.ietf@gmail.com>; roll-= chairs@ietf.org; Routing
> Over Low power and Lossy networks <roll@ietf.org>
> Subject: Re: Deprecating DCO status
> =20
> Hi Pascal, Alvaro,
> =20
> I am mostly clear on the changes required. Please find attached an= HTML-diff
> for the suggested changes.
> The only concern for me was if we remove the registry where would = the Status
> 1 indicating "No routing-entry for the indicated Target found= ".
> But I see that unaware-leaves has made an update to its IANA secti= on to
> include this status. So it works.
> Thus, I am referencing unaware-leaves for Status values.
> =20
> Regards,
> Rahul
> =20
> On Wed, 28 Oct 2020 at 14:44, Pascal Thubert (pthubert)
> <pthubert@cisco.com&g= t; wrote:
> >
> > Hello Rahul:
> >
> >
> >
> > Attracting your attention on the particular point below in Al= varo=E2=80=99s AD review
> of unaware leaves:
> >
> >
> >
> > > > So we should update the NPDAO draft and remove that= entry shouldn't
> we?
> >
> > > > Note that NPDAO is already in missref because of th= is draft
> >
> > > > https://www.rfc-editor.org/cluster_info.php?cid=3DC310
> >
> > >
> >
> > > Yes.
> >
> > >
> >
> > > Also, the specification of the DAO-ACK needs to be chang= ed to at
> > > least make it
> >
> > > clear that the "DCO-ACK Status" field refers t= o the "RPL Status".
> >
> > >
> >
> > > About deprecating the registry... We should ask IANA wh= at to do:
> > > they already
> >
> > > created the registry, but the efficient-npdao hasn't= been published
> > > as an
> >
> > > RFC. I don't know if we just delete =C2=A76.2 or if= we have to formally
> > > deprecate the
> >
> > > registry (possible in this document).
> >
> > >
> >
> > > Please ack to this to make sure we're in sync before= asking IANA.
> >
> >
> >
> > The change Alvaro and I want to make in the efficient npdao d= raft is
> > that the DCO status is now of the same type as the RPL status= in DAO
> > ACK, and should be specified as such in
> > https://tools.ietf.org/html/draft-ietf-roll-efficient= -npdao-18#section
> > -4.3.4
> >
> > Which means that we do not need the registry that we ask for = in
> > https://tools.ietf.org/html/draft-ietf-roll-efficient= -npdao-18#page-17
> >
> >
> >
> > Do you agree?
> >
> >
> >
> > Keep safe!
> >
> >
> >
> > Pascal
> >
> >
<= /div> --0000000000002cd3bd05b2bca879-- From nobody Wed Oct 28 08:45:09 2020 Return-Path: X-Original-To: roll@ietfa.amsl.com Delivered-To: roll@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E82B63A0062; Wed, 28 Oct 2020 08:45:07 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.098 X-Spam-Level: X-Spam-Status: No, score=-2.098 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id tjWeXiE7NC8a; Wed, 28 Oct 2020 08:45:06 -0700 (PDT) Received: from mail-ej1-x62f.google.com (mail-ej1-x62f.google.com [IPv6:2a00:1450:4864:20::62f]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 0B8203A005F; Wed, 28 Oct 2020 08:45:06 -0700 (PDT) Received: by mail-ej1-x62f.google.com with SMTP id gs25so7941983ejb.1; Wed, 28 Oct 2020 08:45:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=MX+NJCKGXDM+gm9waZuv0IitfB2jcDLRCqgIgAyOz/o=; b=FIan4s9PHEYh0wDXb/s/b1hnwiYehjJEf19xGqf5oMzPhzmHEh/uYvP7NG+nw5Tn2f FMieJnoAa/231vy9WPMqF4DqFe+dhjMy1cypR6GY4CsAM3t6gTnJRoMXKE+yo+k/3Qjh oTFptW+mMRpoDqFVBb3JnM2XX+qx7qTm8z9kmOdZFRE8kDw9vJkvxDzf1RbvnER9aBKe +5iR+NDEn2k//omm76NUIjBoiWkRnZS/ZFZi0Ik51r6NrkezwL03xoWBlioO0lePvb1H QQwe5zYTthIjkK+QfvdtfldHzwkvZlIOuumIvsx/aIDOFsCRZERzcjoCMTKl6UR2b0lU 1dSg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=MX+NJCKGXDM+gm9waZuv0IitfB2jcDLRCqgIgAyOz/o=; b=o4X2bLV0Fc+H7YF7RSEi3TbfxHqtf3engd09vU21dXG+XeXyKUeyCVOhDb7kdGXUbq hjkF2SKpOorqbHkJnV2eQO/Ql+q9SHDBsqtPS77IK0YSy5E8qgmeTP2+AxZRsBIS8kTv FJWd8sJFP+qWFuGpK+pZzWdK/Rkaus9qXhkNgokVqZ7tFJgV4qDKbCyTMZ9YZl+sSshj XDbK0i7aB+nF1jIIG+qFQJDjEUv2fAvJ56DaL2kFbJUbkU9QBjr53mVkuPg5rXagYX60 w53tYRzsygEFguzYLnvryz1//nTthisGdP1bU6fAtpd3Mp7mTqaNzECoVBWTQ8kML3nH DMmg== X-Gm-Message-State: AOAM532OR708CIGwyCoqdeYUnS6hrThRzzyhZ1XafboEnC2Vwmf5iO8W QEUXZxFUqxoB8RM6EkOwVM5Azj5gU5+4EoWIenI= X-Google-Smtp-Source: ABdhPJxzXxen1gUpcY/MB9A/jVR3v7HteZRTKJKcRdR7qquZU29o/8hbKCT529lnUVbHs2aoCpww1+wHs4r9d6NJzO4= X-Received: by 2002:a17:906:4a98:: with SMTP id x24mr7934056eju.319.1603899904482; Wed, 28 Oct 2020 08:45:04 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Rahul Jadhav Date: Wed, 28 Oct 2020 21:14:53 +0530 Message-ID: To: Alvaro Retana , Pascal Thubert Cc: "Pascal Thubert (pthubert)" , "roll-chairs@ietf.org" , Routing Over Low power and Lossy networks Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Archived-At: Subject: Re: [Roll] Deprecating DCO status X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 28 Oct 2020 15:45:08 -0000 Thanks, Pascal, Alvaro for the edits. @Pascal Thubert, Regarding "('E' flag set and 'A' flag not set)", this may confuse the reader and also may not be relevant for this spec since it is ok for an implementer to simply use 0/1 as a Status value without the understanding of E/A flags in unaware-leaves. Can we skip that part since anyways we are referencing unaware-leaves? @Alvaro Retana, I will not submit unless explicitly told to do. Thanks, Rahul On Wed, 28 Oct 2020 at 20:47, Alvaro Retana wrote: > > > Hi! > > The last part (=E2=80=9CThis specification adds=E2=80=A6=E2=80=9D) is not= correct, as unaware-leaves is the one defining the value. Maybe =E2=80=9C= This specification uses=E2=80=A6=E2=80=9D would be more appropriate. > > > Rahul: Please don=E2=80=99t submit anything yet. Because IANA already c= reated the registry (from the efficient-npdao draft), I want to check with = them what is the right thing to do: if we just delete the registry, or if w= e need to leave it and deprecate it somehow. > > Thanks! > > Alvaro. > > On October 28, 2020 at 11:06:39 AM, Pascal Thubert (pthubert) (pthubert@c= isco.com) wrote: > > Hello Rahul > > I believe that you need to indicate that the status is a RPL Status and r= efer to section 6.5.1. of RPL " Format of the DAO-ACK Base Object". I'm sur= e Alvaro will propose an improvement but my knee jerk: > > Before: > > Status: Indicates the completion status. Section 12.5 of [I-D.ietf-roll-u= naware-leaves] defines the status values. A value of 0 is defined as unqual= ified acceptance. A value of 1 is defined as "No routing-entry for the indi= cated Target found". > > After: > > Status: RPL Status indicating the completion. The RPL Status is defined i= n section 6.5.1. of [RFC 6550] and updated in > section 6.3 of [I-D.ietf-roll-unaware-leaves]. This specification adds th= e RPL rejection value ('E' flag set and 'A' flag not set) of 1, defined as = "No routing-entry for the indicated Target found". > > Works? > > Take care; > > Pascal > > > > -----Original Message----- > > From: Rahul Jadhav > > Sent: mercredi 28 octobre 2020 13:43 > > To: Pascal Thubert (pthubert) > > Cc: Alvaro Retana ; roll-chairs@ietf.org; Routi= ng > > Over Low power and Lossy networks > > Subject: Re: Deprecating DCO status > > > > Hi Pascal, Alvaro, > > > > I am mostly clear on the changes required. Please find attached an HTML= -diff > > for the suggested changes. > > The only concern for me was if we remove the registry where would the S= tatus > > 1 indicating "No routing-entry for the indicated Target found". > > But I see that unaware-leaves has made an update to its IANA section to > > include this status. So it works. > > Thus, I am referencing unaware-leaves for Status values. > > > > Regards, > > Rahul > > > > On Wed, 28 Oct 2020 at 14:44, Pascal Thubert (pthubert) > > wrote: > > > > > > Hello Rahul: > > > > > > > > > > > > Attracting your attention on the particular point below in Alvaro=E2= =80=99s AD review > > of unaware leaves: > > > > > > > > > > > > > > So we should update the NPDAO draft and remove that entry shouldn= 't > > we? > > > > > > > > Note that NPDAO is already in missref because of this draft > > > > > > > > https://www.rfc-editor.org/cluster_info.php?cid=3DC310 > > > > > > > > > > > > > > Yes. > > > > > > > > > > > > > > Also, the specification of the DAO-ACK needs to be changed to at > > > > least make it > > > > > > > clear that the "DCO-ACK Status" field refers to the "RPL Status". > > > > > > > > > > > > > > About deprecating the registry... We should ask IANA what to do: > > > > they already > > > > > > > created the registry, but the efficient-npdao hasn't been published > > > > as an > > > > > > > RFC. I don't know if we just delete =C2=A76.2 or if we have to form= ally > > > > deprecate the > > > > > > > registry (possible in this document). > > > > > > > > > > > > > > Please ack to this to make sure we're in sync before asking IANA. > > > > > > > > > > > > The change Alvaro and I want to make in the efficient npdao draft is > > > that the DCO status is now of the same type as the RPL status in DAO > > > ACK, and should be specified as such in > > > https://tools.ietf.org/html/draft-ietf-roll-efficient-npdao-18#sectio= n > > > -4.3.4 > > > > > > Which means that we do not need the registry that we ask for in > > > https://tools.ietf.org/html/draft-ietf-roll-efficient-npdao-18#page-1= 7 > > > > > > > > > > > > Do you agree? > > > > > > > > > > > > Keep safe! > > > > > > > > > > > > Pascal > > > > > > From nobody Wed Oct 28 09:13:14 2020 Return-Path: X-Original-To: roll@ietfa.amsl.com Delivered-To: roll@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com 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gmailapi.google.com with HTTPREST; Wed, 28 Oct 2020 11:05:27 -0700 From: Alvaro Retana In-Reply-To: References: MIME-Version: 1.0 Date: Wed, 28 Oct 2020 11:05:27 -0700 Message-ID: To: Pascal Thubert , "Pascal Thubert (pthubert)" , Rahul Jadhav Cc: "roll-chairs@ietf.org" , Routing Over Low power and Lossy networks Content-Type: multipart/alternative; boundary="0000000000003148fc05b2bf0218" Archived-At: Subject: Re: [Roll] Deprecating DCO status X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 28 Oct 2020 18:05:32 -0000 --0000000000003148fc05b2bf0218 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Ok=E2=80=A6if the registry is created by unaware-leaves, and the =E2=80=9Cn= o routing entry=E2=80=9D value is added by npdao, we should be ok. Alvaro. On October 28, 2020 at 12:22:09 PM, Pascal Thubert (pthubert) ( pthubert@cisco.com) wrote: Hello Rahul > Thanks, Pascal, Alvaro for the edits. > > @Pascal Thubert, Regarding "('E' flag set and 'A' flag not set)", this may > confuse the reader and also may not be relevant for this spec since it is ok for > an implementer to simply use 0/1 as a Status value without the understanding > of E/A flags in unaware-leaves. Can we skip that part since anyways we are > referencing unaware-leaves? RFC 6550 specifies that values >=3D 128 are rejection. The 'E' flag is backward compatible. The reason why I mention it is that DCO has a normative ref to unuaware leaves, so it needs to implement the new RPL Status, meaning that it needs to indicates the setting of the 'E' and 'A' flags for each status it defines. My question to you is whether DCO status code 1 was a rejection or not. If it was a rejection, then the RPL Status value per RFC 6550 should have been 129; in the new format it is 1 again, but with the 'E' flag set. This si what https://tools.ietf.org/html/draft-ietf-roll-unaware-leaves-22#section-12.5 assumes. If it is a warning, then a value of 1 is OK but still I'd mention the E and A flags for completeness, both set to 0. If so then the IANA declaration in unaware-leaves has to change. I tend to think that I should remove | 1 | No routing-entry for the | [EFFICIENT-NPDAO] | | | indicated Target found | >From the initialization of the IANA section and let you define it as a new entry in the registry in DCO. What do you all think? Pascal --0000000000003148fc05b2bf0218 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable =
Ok=E2=80=A6if the registry is created by unaware= -leaves, and the =E2=80=9Cno routing entry=E2=80=9D value is added by npdao= , we should be ok.=C2=A0

Alvaro.

On October 28, 2020 at 12:2= 2:09 PM, Pascal Thubert (pthubert) (p= thubert@cisco.com) wrote:

Hello Rahul

> Thanks, Pascal, Alvaro for the edits.
> =20
> @Pascal Thubert, Regarding "('E' flag set and 'A&= #39; flag not set)", this may
> confuse the reader and also may not be relevant for this spec sinc= e it is ok for
> an implementer to simply use 0/1 as a Status value without the und= erstanding
> of E/A flags in unaware-leaves. Can we skip that part since anyway= s we are
> referencing unaware-leaves?

RFC 6550 specifies that values >=3D 128 are rejection. The 'E= 9; flag is backward compatible. The reason why I mention it is that DCO has= a normative ref to unuaware leaves, so it needs to implement the new RPL S= tatus, meaning that it needs to indicates the setting of the 'E' an= d 'A' flags for each status it defines.

My question to you is whether DCO status code 1 was a rejection or not.= If it was a rejection, then the RPL Status value per RFC 6550 should have = been 129; in the new format it is 1 again, but with the 'E' flag se= t. This si what https://tools.ietf.org/html/draft-ietf-roll-una= ware-leaves-22#section-12.5 assumes.

If it is a warning, then a value of 1 is OK but still I'd mention t= he E and A flags for completeness, both set to 0. =20
If so then the IANA declaration in unaware-leaves has to change.

I tend to think that I should remove =20

| 1 | No routing-entry for the | [EFFICIENT-NPDAO] |
| | indicated Target found | =20

From the initialization of the IANA section and let you define it as a = new entry in the registry in DCO.

What do you all think?

Pascal
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15.20.3477.028; Wed, 28 Oct 2020 19:48:14 +0000 From: "Pascal Thubert (pthubert)" To: Alvaro Retana CC: Pascal Thubert , Rahul Jadhav , "roll-chairs@ietf.org" , Routing Over Low power and Lossy networks Thread-Topic: Deprecating DCO status Thread-Index: AdatCZyw7r2+jZrvQAKux3tM4YDw1wAHlCWAAASKdrAAANO5gAAA+EGAAADvIiAAA/mhgAADlvUA Date: Wed, 28 Oct 2020 19:48:14 +0000 Message-ID: <5F860BB9-5306-4EC8-9998-376611AB1773@cisco.com> References: In-Reply-To: Accept-Language: fr-FR, en-US Content-Language: fr-FR X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: gmail.com; dkim=none (message not signed) header.d=none;gmail.com; dmarc=none action=none header.from=cisco.com; x-originating-ip: [2a01:cb1d:4ec:2200:3477:d3f8:65b0:3a8e] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: b7e466fe-630b-4210-541a-08d87b7a68dd x-ms-traffictypediagnostic: CY4PR11MB2007: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:10000; x-ms-exchange-senderadcheck: 1 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text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Archived-At: Subject: Re: [Roll] Deprecating DCO status X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 29 Oct 2020 10:55:39 -0000 I am not sure if I understand it correctly. Is the proposal to update the IANA registry for "no routing entry" value by NPDAO? That is, I should keep the IANA section in NPDAO but mention it is an update to (not create of) the registry and keep a reference to unaware leaves? Does this also mean that there will be an update to Section 12.5 of Unaware leaves? Regards, Rahul On Thu, 29 Oct 2020 at 01:18, Pascal Thubert (pthubert) wrote: > > Let=E2=80=99s do this ! > > > Regards, > > Pascal > > Le 28 oct. 2020 =C3=A0 19:05, Alvaro Retana a = =C3=A9crit : > > =EF=BB=BF > Ok=E2=80=A6if the registry is created by unaware-leaves, and the =E2=80= =9Cno routing entry=E2=80=9D value is added by npdao, we should be ok. > > Alvaro. > > On October 28, 2020 at 12:22:09 PM, Pascal Thubert (pthubert) (pthubert@c= isco.com) wrote: > > Hello Rahul > > > Thanks, Pascal, Alvaro for the edits. > > > > @Pascal Thubert, Regarding "('E' flag set and 'A' flag not set)", this = may > > confuse the reader and also may not be relevant for this spec since it = is ok for > > an implementer to simply use 0/1 as a Status value without the understa= nding > > of E/A flags in unaware-leaves. Can we skip that part since anyways we = are > > referencing unaware-leaves? > > RFC 6550 specifies that values >=3D 128 are rejection. The 'E' flag is ba= ckward compatible. The reason why I mention it is that DCO has a normative = ref to unuaware leaves, so it needs to implement the new RPL Status, meanin= g that it needs to indicates the setting of the 'E' and 'A' flags for each = status it defines. > > My question to you is whether DCO status code 1 was a rejection or not. I= f it was a rejection, then the RPL Status value per RFC 6550 should have be= en 129; in the new format it is 1 again, but with the 'E' flag set. This si= what https://tools.ietf.org/html/draft-ietf-roll-unaware-leaves-22#section= -12.5 assumes. > > If it is a warning, then a value of 1 is OK but still I'd mention the E a= nd A flags for completeness, both set to 0. > If so then the IANA declaration in unaware-leaves has to change. > > I tend to think that I should remove > > | 1 | No routing-entry for the | [EFFICIENT-NPDAO] | > | | indicated Target found | > > From the initialization of the IANA section and let you define it as a ne= w entry in the registry in DCO. > > What do you all think? > > Pascal From nobody Thu Oct 29 04:25:27 2020 Return-Path: X-Original-To: roll@ietfa.amsl.com Delivered-To: roll@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 2EBE33A0B5B; Thu, 29 Oct 2020 04:25:26 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -9.598 X-Spam-Level: X-Spam-Status: No, score=-9.598 tagged_above=-999 required=5 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SWYgc28gdGhlbiB0aGUgSUFOQSBkZWNsYXJhdGlvbiBpbiB1bmF3YXJlLWxlYXZlcyBoYXMgdG8g Y2hhbmdlLg0KPj4gDQo+PiBJIHRlbmQgdG8gdGhpbmsgdGhhdCBJIHNob3VsZCByZW1vdmUNCj4+ IA0KPj4gfCAxIHwgTm8gcm91dGluZy1lbnRyeSBmb3IgdGhlIHwgW0VGRklDSUVOVC1OUERBT10g fA0KPj4gfCB8IGluZGljYXRlZCBUYXJnZXQgZm91bmQgfA0KPj4gDQo+PiBGcm9tIHRoZSBpbml0 aWFsaXphdGlvbiBvZiB0aGUgSUFOQSBzZWN0aW9uIGFuZCBsZXQgeW91IGRlZmluZSBpdCBhcyBh IG5ldyBlbnRyeSBpbiB0aGUgcmVnaXN0cnkgaW4gRENPLg0KPj4gDQo+PiBXaGF0IGRvIHlvdSBh bGwgdGhpbms/DQo+PiANCj4+IFBhc2NhbA0K From nobody Thu Oct 29 07:37:15 2020 Return-Path: X-Original-To: roll@ietf.org Delivered-To: roll@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 337CA3A0A87; Thu, 29 Oct 2020 07:37:08 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: Cc: roll@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 7.21.0 Auto-Submitted: auto-generated Precedence: bulk Reply-To: roll@ietf.org Message-ID: <160398222815.14280.12928151743169967071@ietfa.amsl.com> Date: Thu, 29 Oct 2020 07:37:08 -0700 Archived-At: Subject: [Roll] I-D Action: draft-ietf-roll-nsa-extension-10.txt X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 29 Oct 2020 14:37:14 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Routing Over Low power and Lossy networks WG of the IETF. Title : Common Ancestor Objective Function and Parent Set DAG Metric Container Extension Authors : Remous-Aris Koutsiamanis Georgios Papadopoulos Nicolas Montavont Pascal Thubert Filename : draft-ietf-roll-nsa-extension-10.txt Pages : 17 Date : 2020-10-29 Abstract: Packet Replication and Elimination is a method in which several copies of a data packet are sent in the network in order to achieve high reliability and low jitter. This document details how to apply Packet Replication and Elimination in RPL, especially how to exchange information within RPL control packets to let a node better select the different parents that will be used to forward the multiple copies of a packet. This document also describes the Objective Function which takes advantage of this information to implement multi-path routing. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-roll-nsa-extension/ There is also an HTML version available at: https://www.ietf.org/archive/id/draft-ietf-roll-nsa-extension-10.html A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-roll-nsa-extension-10 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Fri Oct 30 05:37:08 2020 Return-Path: X-Original-To: roll@ietfa.amsl.com Delivered-To: roll@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 6B7873A0E51 for ; Fri, 30 Oct 2020 05:37:06 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.097 X-Spam-Level: X-Spam-Status: No, score=-2.097 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=googlemail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id D4NBc8BBELpr for ; Fri, 30 Oct 2020 05:37:04 -0700 (PDT) Received: from mail-vk1-xa34.google.com (mail-vk1-xa34.google.com [IPv6:2607:f8b0:4864:20::a34]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id C349F3A0E4D for ; Fri, 30 Oct 2020 05:37:03 -0700 (PDT) Received: by mail-vk1-xa34.google.com with SMTP id z10so1433330vkn.0 for ; Fri, 30 Oct 2020 05:37:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20161025; h=mime-version:from:date:message-id:subject:to:cc; bh=0F9xsO0BmcvdBkvX/ifU6e7RuVtiNA/gKRLqlJGCPO0=; b=Ly3a8uv4AFizo3+ywCE04iu08GoIa/ohlQm1/HacAITlEXvrkxjuNrNFe1KkpHRL9A 6aPn+dhBuIp9KhuxdiHCs2nv06TvNce+xcPheRWkMGBx98l7Yx0awBMgxY/o+rPdz9ty 8L/+StHSu65zDUccluxm7tL4T6Cje6TgGvXd4E2zJ4lIV2ActKW8C/2GHQzqfArFxH8j +YYjgPC0IYh10vbxOR3tawA+XUm2KjPuuVAu/JwoLmHyhBXeZbqgulmdmQav6wjIBZPT whlYcFJYBjCsjTtW3G7VNmYH/DK4yZhFHzBy/vZBSg8D83PGyR/0zlarGL1BeKpz6A5C xSqg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to:cc; bh=0F9xsO0BmcvdBkvX/ifU6e7RuVtiNA/gKRLqlJGCPO0=; b=abtSEH2I6A6Sj2j77nuVaA+u79scBSlueINqvWcscULwv6l6blKjDqHeh65p8AX/JE 9fEvJIb2DUZuY40l9P2WyJPN99FCrV+QIYJaVw4r+MW04H+6Zdzk7Hq0KmSAfLzjf1T+ gRlNLpawtOqIcYXB1xSIvIdLZm+kJQLCnZcZSe0asl4TA23N7r0aovAZCocI93XETQYA D3lWkn3xa//Vklyf691Wdi96XpugaMkVPb3Hz8DNN6rlugADMckYPVk97huyxCMpj/4r r+z+ZxPV48W3z+e7dSyav9QZO2EHildTr25oTB85Y/IUc6FRcuWF3zqNh0qQPTfZHBVh dTZg== X-Gm-Message-State: AOAM5330HySXesQFBqaz3onQjgTN13Vmziv+brh6fP1DZFfyDCaDT2Pk LNZmutx4LUb5+er0GGgeLkXFmD75r2wizCqUFl2aNdp2xPA= X-Google-Smtp-Source: ABdhPJyMlOGZYpn6mUMiC2q8ldB7ST3SB5eUYrLEFBooHLk1Jc0QD5TVstcHND2+h8oivhf+OOheUg/l6VIt86Doy3o= X-Received: by 2002:a1f:a94c:: with SMTP id s73mr6614517vke.19.1604061422687; Fri, 30 Oct 2020 05:37:02 -0700 (PDT) MIME-Version: 1.0 From: Ines Robles Date: Fri, 30 Oct 2020 14:36:27 +0200 Message-ID: To: roll Cc: Michael Richardson Content-Type: multipart/alternative; boundary="0000000000004c184905b2e2a708" Archived-At: Subject: [Roll] Review request for draft-ietf-roll-enrollment-priority X-BeenThere: roll@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Routing Over Low power and Lossy networks List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 30 Oct 2020 12:37:06 -0000 --0000000000004c184905b2e2a708 Content-Type: text/plain; charset="UTF-8" Dear all, We are looking for this document: -Reviewers -Shepherd document https://datatracker.ietf.org/doc/draft-ietf-roll-enrollment-priority/ Please let us know if you are willing to help us with that. Thank you very much in advance, Ines and Dominique --0000000000004c184905b2e2a708 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Dear all,

We are looking for this d= ocument:

-Reviewers
-Shepherd document


Please let us kn= ow if you are willing to help us with that.=C2=A0

= Thank you very much=C2=A0in advance,

Ines and Domi= nique
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