6lo WG Agenda - IETF 118, Prague 12:00-14:00 (UTC) @ Berlin 3/4 13:00-15:00 (Meeting venue time) @ Berlin 3/4 Friday, November 10, 2023 Chairs: Shwetha Bhandari, Carles Gomez Responsible AD: Erik Kline Minute takers: Georgios Papadopoulos, Laurent Toutain Jabber scribe: TBD Introduction and draft status Bhandari/Gomez 10 min Agenda bashing; blue sheets; scribe; Jabber scribe https://datatracker.ietf.org/meeting/118/materials/slides-118-6lo-6lo-chairs-introduction Carles presents the agenda of the day. No comment on the agenda. 1 new RFC 9453 is published. 1 AD evaluation, Pascal: Will work on Erik comments, After the Erik comments, the document is in the revised that is needed. There are 3 active documents, and today they will be presented. no comment on the document status. IPv6 Neighbor Discovery Prefix Registration Pascal Thubert 15 min https://datatracker.ietf.org/doc/html/draft-ietf-6lo-prefix-registration-01 https://datatracker.ietf.org/meeting/118/materials/slides-118-6lo-ipv6-neighbor-discovery-prefix-registration Part of a family of draft to delegate prefix to the host defines an abstract technique for a GW to get the prefixes host register the prefix to the router, in mobility case, all the device under the router will have to remember. Better to keep the prefix and inform the router. in the draft, a way to avertise the prefix to the router. Pascal mentiones that there is a related draft in v6ops WG with Prefix delegation per device This draft is a perfect companion for what is done here. Generalizing the concept of owning an address to towning a prefix The objective is for a host to do not depend on the link-local, but having the DHCP server is in charge. No Question or comments. Carles: need some reviews. Pascal: will publish an updated version. After -02 feedback from the WG is expected. Transmission of SCHC-compressed Packets over IEEE 802.15.4 Carles Gomez 20 min https://datatracker.ietf.org/doc/html/draft-ietf-6lo-schc-15dot4-03 https://datatracker.ietf.org/meeting/118/materials/slides-118-6lo-transmission-of-schc-compressed-packets-over-ieee-802154-networks Carles presents the latest updates of the draft. Carles gives a quick reminder of the draft. 2 updates -3 and -04 with comments from Kila? and Georgios. Single-hop communication was added. document has been reorganized Feedback from Georgios that UDP header can be between from 2 to 4 bytes. and fix the size for all the IPHC headers. Carles presents the transition stack with UDP/CoAP compression Laurent comments: SCHC architecture is still in the beginning, the comments of the authors would be more than welcome for the SCHC architecture draft. 3.3 Single-hop communication section is added. Adnan: this draft is being specific for 15.4 technology, but the WG is rather 6lo. Carles: this question was asked back in time to the WG, and the answer was that at the moment lets focus on one single technology. Section 3.4.1. SRO, a topology Figure was added. Section 3.4.2. TRO, a topology Figure was added. Laurent: It would be good to mention in the document in which condition each approach/mode to apply. For example Management can change the rules on end points but not on routers. Carles: agreed. We have started working on it (Appendix B of the draft). Adnan: add security considerations replace SCHC Header to Compressed header to avoid ambiguities with work done by SCHC WG. Path-Aware Semantic Addressing for LLNs Luigi Iannone 10 min https://datatracker.ietf.org/doc/html/draft-ietf-6lo-path-aware-semantic-addressing-03 https://datatracker.ietf.org/meeting/118/materials/slides-118-6lo-path-aware-semantic-addressing-pasa-for-low-power-and-lossy-networks This new revision has few minor fixes. Don’t mention technical solution, but stated the risk. update 8505 and use a bit, document is stable Carles: there was a lot of discussion, maybe it would be good to have some reviews from the WG. Luigi: a statement on non impact of DAD has to be added. Generic Address Assignment Option for 6LoWPAN ND Luigi Iannone 10 min https://datatracker.ietf.org/doc/html/draft-iannone-6lo-nd-gaao-01 https://datatracker.ietf.org/meeting/118/materials/slides-118-6lo-generic-address-assignment-option-for-6lowpan-neighbor-discovery In the format, ROVR was added. Adnan: what you are doing with GAAO option. can we use only one message ? Luigi: there is a risk since no confirmation, but need to be more studied. Pascal: confused but the two multicast, there is only one. Luigi: agreed. Luigi: asks if GAAO has the interest of the group to go forward, if not it will go together (merged) with PASA document. Pascal: very optimistic with they idea of GAAO, continue to work, The group has to agree on 1 or 2 documents (PASA and GAAO) Esko: keep it separate Carles: same opinion in favor of GAAO, not sure if 1 or 2 documents, but in any case GAAO is a framework and PASA is a use case for that. GAAO may accommodate any future mechanism that might arise beyond PASA. Transmission of IPv6 Packets over Short-Range OWC Younghwan Choi 10 min https://datatracker.ietf.org/doc/html/draft-choi-6lo-owc-01 https://datatracker.ietf.org/meeting/118/materials/slides-118-6lo-transmission-of-ipv6-packets-over-short-range-owc OWC: LED Modulation defined by IEEE 802.15.7 two topologies P2P and star Mesh topology is done with route-over Pascal: (comment on slide 8): it is not only related to the MTU. Need to consider whether Path MTU discovery is needed. Carsten: 15.7 was unidirectional, how to build a subnet? Adnan: same remark, if is not bi-directionnal Younghwan: devices can have receiver and sender. Adnan: OWN does not reflect Short range ? Carles: 15.7 focus on wireless personal area networks, which are short range. Carsten: can you give to the list which hardware to work on this Esko: explicitly state how to get bi directionnal. Carles: any other questions or comments? [No questions] Session adjourned at 14:37 ---------------- Chat, for the record --------------------------- Erik Kline: I might be a few minutes late, coming from an IESG+IAB meeting, but don't let me hold everyone up Carles Gomez: OK, Erik Carles Gomez: If there is anything you might want to mention regarding the multicast reg draft, perhaps you can do it so later in the meeting, at some point Erik Kline: AD Eval is done, just need a revised I-D before going to IETF LC Carles Gomez: Great, thanks, Erik! Pascal Thubert: I'm sorry I missed or lost the request fir a revised I-D Erik Kline: It just happened last night. The mail would have gone to the draft authors auto-list, which might be an old email address? Here's the datatracker history tab, which has the feedback: https://datatracker.ietf.org/doc/draft-ietf-6lo-multicast-registration/history/ Abdussalam Baryun: yes I read to review, Abdussalam Baryun: need to review Pascal Thubert: Erik: did you send the message to 6lo? I'm not seeing it Pascal Thubert: I'm mostly not using the cisco email though I still have access for a little while Pascal Thubert: please consider sending over gmail to me. Erik Kline: I used the datatracker state change mechanism, which posted to the history and the email address of the authors in the draft (which is probably your Cisco address) I'll forward to your gmail right now Pascal Thubert: Thanks Erik! Erik Kline: sent Carsten Bormann: IEEE Standard for Local and metropolitan area networks--Part 15.7: Short-Range Optical Wireless Communications Carsten Bormann: https://standards.ieee.org/ieee/802.15.7/6820/