This document updates RFC 4944, "Transmission of IPv6 Packets over
IEEE 802.15.4 Networks". This document specifies an IPv6 header
compression format for IPv6 packet delivery in Low Power Wireless
Personal Area Networks (6LoWPANs). The compression format relies on
shared context to allow compression of arbitrary prefixes. How the
information is maintained in that shared context is out of scope.
This document specifies compression of multicast addresses and a
framework for compressing next headers. UDP header compression is
specified within this framework. [STANDARDS-TRACK]