This specification introduces a new IPv6 over Low-Power Wireless Personal Area Network (6LoWPAN) dispatch type for use in 6LoWPAN route-over topologies@ which initially covers the needs of Routing Protocol for Low-Power and Lossy Networks (RPL) data packet compression (RFC 6550). Using this dispatch type@ this specification defines a method to compress the RPL Option (RFC 6553) information and Routing Header type 3 (RFC 6554)@ an efficient IP-in-IP technique@ and is extensible for more applications.