Dear Michael, Ines, Samita, Gabriel, Pascal, Thomas,
We recently discovered that there are ongoing discussions to re-use the
6LoWPAN dispatch type assigned by IANA for Mesh-Under routing (as
specified in RFC 4944) for Route-Over purposes.
As one of the biggest 6LoWPAN network operators (35 million smart meters
to be deployed in France - first deployments have started) and considering
other massive roll-outs on progress in Asia with the G3-PLC technology
(using the 6LoWPAN/IPv6 mechanisms), we are deeply concerned by the
deprecation of this dispatch type with respect to the sustainablility of
the IPv6 framework considering potential long-term evolutions in our IP
telco architecture. We would like to draw your attention to the fact that
the lifespan of smart meters (minimum of 20 years - garanteed by the
manufacturer), and more generally smart grid connected devices, are not to
be compared with the much shorter lifespans of consumer electronics.
We strongly disagree with making any modifications endangering backwards
compatibility with already deployed 6LoWPAN/IPv6 systems and hope that
IETF will discourage this as well.
We suggest that one of the alternate solutions, already proposed by the
interested parties, should be prefered (as the overhead generated is
comparable).
Thank you very much for your consideration,
Best regards,
Thierry Lys, Cédric Chauvenet and Cédric Lavenu
We're also sending this email to ietf(_at_)itef(_dot_)org as it doesn't
immediately
appear clear where to discuss this, as there are many possible WGs that
might be relevant, but also that this concerns deprecation of IANA
allocations which have been made through IETF consensus, making this list
possibly relevant.
G3-PLC protocol is also known as Recommendation ITU-T G.9903 (available
for download on ITU web site)
Thierry Lys
Metering Division
Building Crysalis - 345 Avenue Georges Clémenceau - 92000 Nanterre -
France
Tel : +33 (0)1 81 97 67 77
