Minutes IETF112: 6lo
minutes-112-6lo-00

Agenda (notes are below)

    Introduction and draft status Bhandari/Gomez 10 min
    Agenda bashing; blue sheets; scribe; Jabber scribe
    https://datatracker.ietf.org/meeting/112/materials/slides-112-6lo-chairs-introduction-01

    IPv6 ND Multicast Address Listener Registration Pascal Thubert 20 min
    IPv6 ND Unicast Lookup
    https://datatracker.ietf.org/doc/html/draft-ietf-6lo-multicast-registration-01
    https://datatracker.ietf.org/doc/html/draft-thubert-6lo-unicast-lookup-01
    https://datatracker.ietf.org/meeting/112/materials/slides-112-6lo-draft-ietf-6lo-multicast-registration-01
    https://datatracker.ietf.org/meeting/112/materials/slides-112-6lo-draft-thubert-6lo-unicast-lookup-00

    Transmission of SCHC-compressed Packets over IEEE 802.15.4 Carles Gomez 10
    min https://datatracker.ietf.org/doc/html/draft-gomez-6lo-schc-15dot4-01
    https://datatracker.ietf.org/meeting/112/materials/slides-112-6lo-transmission-of-schc-compressed-packets-over-ieee-802154-networks-02

    Native Short Address for LLN Expansion Luigi Iannone 10 min
    https://datatracker.ietf.org/doc/html/draft-li-6lo-native-short-address-00
    https://datatracker.ietf.org/meeting/112/materials/slides-112-6lo-native-short-address-00

    Short Hierarchical IP Addresses at Edge Networks Haoyu Song 10 min
    https://datatracker.ietf.org/doc/html/draft-song-ship-edge-02
    https://datatracker.ietf.org/meeting/112/materials/slides-112-6lo-short-hierarchical-ip-address-at-edge-networks-00

Meeting notes (time in UTC)

[14:30] Introduction and draft status (Bhandari/Gomez)

    Note Well is presented.

    Agenda: no comment.

    Drafts status
        IPv6 over NFC: Erik. IESG concerned that NFC specification not publicly
        available. Erik got access. Way to proceed being discussed. IPv6 over
        PLC: authors responded to most comments

[14:35] IPv6 ND Multicast Address Listener Registration (Pascal Thubert)

    a family of RFCs/drafts revolving around ND, more specifically Stateful
    Address Autoconfiguration. this draft includes ND and RPL stuff in one
    document, unlike the RFC8505+9010 pair. 6LBR now accepts multiple
    registrations for same address (multicast). this spec answers an explicit
    requirement by Wi-SUN. this includes brown field deployment over networks
    running MOP 1 or 3. routing could be any protocol, not just RPL. Could use
    MPL as well. solicit reviews, would like to have a fst turn around time
    Carles: volunteers to review? Pascal: implementations would be very welcome
    as well. Swetha: what about other WGs? Pascal: will present at ROLL as
    well. Erik: PIM would be interested too.

[14:55] IPv6 ND Unicast Lookup (Pascal Thubert)

    address maping now know by 6LBR, could respond to unicast address lookup,
    as opposed to multicast originally published in 2019, while LBR draft was
    completed. Didn’t find a home at 6MAN coming back to 6lo to complete work.

[15:03] Transmission of SCHC-compressed Packets over IEEE 802.15.4 (Carles
Gomez)

    SCHC compression allows to achieve better compression than 6282 in some
    cases. interest in using SCHC compression on top of 6LoWPAN networks. a
    1-byte Dispatch proposed, 1-byte RuleID. in SCHC as specified in RFC8724,
    it is assumed that “uplink” and “downlink” are implicitely known, not so in
    6lo mesh networks. proposed to introduce “tx” and “rx” notions in 6lo-SCHC
    Dominique: what is the rationale for deciding on RuleID fixed length, and
    specifically 1 byte? Carles: 1 byte seemed enough for use cases in mind.
    Will reconsider choice of fixed length, tough. Pascal: LPWAN architecture
    has asymmetrical and symmetrical cases. Does this document fit in? Pascal:
    discovering dev-to-dev from address seems odd. In 15.4 we don’twhich node
    is the router.

[15:14] Native Short Address for LLN Expansion (Luigi Iannone)

    changed title to better reflect application scope.
    Allocation Function is now open to upgrades.
    overall improvment of document
    authors consider it ready for WG adoption
    Carles: last meeting, concerns about renumbering on topology changes.
    Seeking discussion on the ML, see if the concerns hqve been adrressed. (in
    the chat) Erik Kline: the adoption discussion might want to include whether
    this is in scope of the existing 6LO charter (in the chat) Carles Gomez:
    Agreed. There is some routing functionality in the document as well. (in
    the chat) Luigi: The routing part is not the main part is just to cope with
    temporary changes. But happy to discuss more Pascal: yes, with 8-port
    switches; it zill work. Wires prevent from creating new links. Luigi: we
    provided a solution to renumbering, looking for comments if this is enough.

[15:25] Short Hierarchical IP Addresses at Edge Networks (Haoyu Song)

    Communication between IoT devices within network is like edge network.
    Devices don’t need to know their prefixes. Variable-length addresses
    proposed, hierarchical scheme. looking for collaboration, find best home
    for this work Carles: please compare with 6282 and SCHC header compression
    Haoyu: one slide about this, will als provide more info. Carles: please
    advise if you can achieve smaller headers. Haoyu: this is without context,
    and only address. (in the chat) Eduard V: Dual homing to different Carriers
    would prevent the possibility for the variable destination addresses.
    Hence, DA would probably stay fixed. Source address could grow on every
    router upstream.

[15:35] meeting is adjourned

Meeting chat:

Carles Gomez
+1 on implementation feedback! ()
20:24:32
Erik Kline
the adoption discussion might want to include whether this is in scope of the
existing 6LO charter 20:52:37 Carles Gomez Agreed. There is some routing
functionality in the document as well. 20:53:24 Luigi Iannone The routing part
is not the main part is just to cope with temporary changes. But happy to
discuss more 21:00:42 Eduard V Dual homing to different Carriers would prevent
the possibility for the variable destination addresses. Hence, DA would
probably stay fixed. 21:00:43 Source address could grow on every router
upstream.