**Session Date/Time:** 17 Jun 2025 15:00

# [IOTDIR](../wg/iotdir.html)

## Summary

The IOTDIR session primarily focused on updates from various IETF Working Groups and IRTF Research Groups with significant IoT-related activities. Key progress was reported across areas such as 6lo, SDF, CoRE, ACE, COSE, DNET, LAKE, ROLL, SCHC, and T2RG, detailing document statuses, new adoptions, and upcoming meetings. The session concluded with a discussion and an action item to organize a face-to-face IoT Directorate meeting in Madrid.

## Key Discussion Points

*   **6lo (IPv6 over Low-Power Wireless Personal Area Networks)**
    *   Two working group documents are currently at the IESG, each with one discuss comment: "IPv6 Neighbor Discovery Prefix Registration" and "Fixing the C flag in the Extended Address Registration Option" (a short draft to correct a bit collision).
    *   The "Path-Aware Semantic Addressing (PASA) for LLNs" draft is ready for publication but is being held pending the "Generic Address Assignment Option for 6lo-pand" draft, which is a normative reference. The latter has received early reviews and is nearing a Working Group Last Call.
    *   The "Transmission of SCHC Compressed Packages over 15.4 Networks" document is being updated to support SCHC-based compression for upper layers (UDP and CoAP), while retaining 6LoWPAN/6lo header compression for IPv6 and routing headers.
    *   The "Transmission of IPv6 Packages over Short Range Optical Wireless Communications (VLC)" document plans an update before the cutoff, focusing on security considerations.
*   **SDF (Semantic Definition Format for IoT)**
    *   The base SDF document is in the RFC editor queue.
    *   Work has shifted to extensions, with the group adopting the "SDF Type Link" draft, which focuses on expressing type information for SDF affordances.
    *   Current focus includes further extensions and addressing the "Digital Twin" topic, specifically describing digital twin-related information and generic metadata for affordances.
*   **CoRE (Constrained RESTful Environments)**
    *   The "CoRE Update" (making an important fix to a registry) has been approved for publication as a Proposed Standard and is with the RFC editor.
    *   Five documents were requested for publication around IETF 122 (one informational, four proposed standards), and AD reviews have been received for all proposed standards, with processing underway.
    *   Two more Working Group documents have either completed or are expecting a second Working Group Last Call.
    *   A new Working Group document was adopted concerning the CoRE CoMP cluster for the allocation of seed ranges for PEN holders.
    *   Interim meetings have discussed corrections and clarifications for CoAP, generic processing of future and unknown query parameters, and a possible general approach for CoAP message aggregation.
*   **ACE (Authentication and Authorization for Constrained Environments)**
    *   RFC 9770 was published recently.
    *   A new version (00) of the Working Group document "Streamlining the Pub Sub Profile of ACE" (on CoAP) was submitted.
*   **COSE (CBOR Object Signing and Encryption)**
    *   A document is in Working Group Last Call, with requests for reviews by June 20.
*   **DNET (Deterministic Networking)**
    *   Two documents, "Net Control Plane Framework" and "Reliable Available Wireless Architecture," have entered IETF Last Call. AD reviews have been received, and authors have updated the drafts.
    *   A Net TSN workshop is planned for Madrid on July 26 (the Saturday after IETF 123), with free registration for those attending IETF or the ITP plenary.
*   **LAKE (Lightweight Authenticated Key Exchange)**
    *   The group has requested a 90-minute slot for Madrid and anticipates a good meeting.
    *   There are six adopted Working Group documents, primarily extensions to the AD-HOC protocol.
    *   A key item is the "Pre-Shared Key Authentication Protocol," extending AD-HOC's authentication methods registry, with coordination ongoing for interoperability testing and formal analysis.
    *   Discussions have started on post-quantum topics, and an individual draft on "Post-Quantum KEM" will be presented in Madrid.
*   **ROLL (Routing Over Low power and Lossy networks)**
    *   The group requested one slot for Madrid.
    *   "Enrollment Priority" is nearing closure of open issues and is next for Working Group Last Call.
    *   There are plans to merge "this modification" with the "use case draft."
    *   "MOPEX capability" and "NSA extensions" are in progress.
*   **SCHC (Static Context Header Compression and fragmentation)**
    *   The group will meet in Madrid and has been holding bi-weekly interim meetings.
    *   Recent Working Group document updates include "SCHC for Compressing ICMPv6 Header" and "SCHC over Networks Prone to Disruption."
    *   New work includes "SCHC for QUICK" (an individual draft) and plans for a side meeting in Madrid focusing on SCHC architecture.
*   **T2RG (Thing-to-Thing Research Group)**
    *   Planning to meet in Madrid for a two-hour summary meeting, including deep dives, with at least one focused on security.
    *   Interim meetings on security topics (April) and data modeling (upcoming Thursday) have been organized.
    *   RG drafts are progressing, with the "Taxonomy Manufacturer Anchor Draft" nearing RG Last Call.
*   **Other Business: Face-to-Face IoT Directorate Meeting in Madrid**
    *   A discussion was held regarding organizing an in-person IoT Directorate meeting during IETF 123 in Madrid.
    *   A sense of those present indicated strong interest in such an event, with preferences for dinner or lunch, and early in the week (e.g., Monday) to avoid conflicts later in the week.
    *   A potential conflict with a planned ART lunch on Monday was noted.

## Decisions and Action Items

*   **Decision:** To organize a face-to-face IOTDIR directorate meeting during IETF 123 in Madrid.
*   **Action Item:** The chair (Ari) will conduct a poll to determine the most suitable time and format (e.g., breakfast, lunch, dinner, or a break-time meeting) for the IOTDIR face-to-face meeting in Madrid, considering potential scheduling conflicts.

## Next Steps

*   Working Groups mentioned will continue progress on their respective drafts, aiming for Working Group Last Calls, IETF Last Calls, or publication.
*   Multiple Working Groups (6lo, CoRE, DNET, LAKE, ROLL, SCHC, T2RG) plan to meet in Madrid, some also holding interim meetings prior to IETF 123.
*   The IOTDIR directorate will communicate the details of the Madrid face-to-face meeting based on the poll results.