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IPv6 over Networks of Resource-constrained Nodes (6lo)

WG Name IPv6 over Networks of Resource-constrained Nodes
Acronym 6lo
Area Internet Area (int)
State Active
Charter charter-ietf-6lo-01 Approved
Document dependencies
Additional resources Issue tracker, Wiki, Zulip stream
Personnel Chairs Carles Gomez, Shwetha Bhandari
Area Director Éric Vyncke
Delegates Erik Kline, Pascal Thubert
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Charter for Working Group

6lo focuses on the work that facilitates IPv6 connectivity over
constrained node networks with the characteristics of:
* limited power, memory and processing resources
* hard upper bounds on state, code space and processing cycles
* optimization of energy and network bandwidth usage
* lack of some layer 2 services like complete device connectivity and

Specifically, 6lo will work on:

  1. IPv6-over-foo adaptation layer specifications using 6LoWPAN
    technologies (RFC4944, RFC6282, RFC6775) for link layer technologies of
    interest in constrained node networks

  2. Information and data models (e.g., MIB modules) for these
    adaptation layers for basic monitoring and troubleshooting.

  3. Specifications, such as low-complexity header compression, that are
    applicable to more than one adaptation layer specification

  4. Maintenance and informational documents required for the existing
    IETF specifications in this space.

Only specifications targeting constrained node networks are in scope.
6lo will work closely with the 6man working group, which will continue
to work on IP-over-foo documents outside the constrained node network
space and will continue to be the focal point for IPv6 maintenance. For
adaptation layer specifications that do not have implications on IPv6
architecture, 6man will be notified about 6lo's working group last call.
Specifications that might have such an impact (e.g., by using IPv6
addresses in a specific way or by introducing new ND options or by
exposing to IPv6 a link model different from either Ethernet or 6lowpan)
will be closely coordinated with 6man, and/or specific parts will be
fanned out to 6man documents. Beyond 6man, 6lo will also coordinate with

6lo works on small, focused pieces of work, but does not take on larger
cross-layer efforts. The working group will continue to reuse existing
protocols and mechanisms whenever reasonable and possible.

Security and management work that is not specific to the link layers
being worked on is out of scope. Work related to routing is out of
scope. 6lo will coordinate closely with the working groups in other
areas that focus on constrained node networks, such as ROLL (RTG) and


Date Milestone Associated documents
Apr 2015 WG adoption call for 6lo security related draft
Mar 2015 WG LC for draft-ietf-6lo-dect-ule
Mar 2015 WG last call for draft-ietf-6lo-6lobac

Done milestones

Date Milestone Associated documents
Done WG LC for draft-ietf-6lo-btle
Done WG adoption call for draft-hong-6lo-ipv6-over-nfc
Done WG decision on adoption of draft-mariager-6lowpan-v6over-dect-ule
Done WG decision on adoption for draft-ietf-6man-6lobac
Done WG decision on adoption for draft-brandt-6man-lowpanz
Done WG decision on adoption for draft-bormann-6lo-ghc
Done WG decision on adoption for draft-schoenw-6lo-lowpan-mib