2020-02-10, rev -06: Implementing Packet Replication and Elimination from/to the RPL root requires the ability to forward copies of packets over different paths via different RPL parents. Selecting the appropriate parents to achieve ultra-low latency and jitter requires information about a node's parents. This document details what information needs to be transmitted and how it is encoded within RPL control packets to enable this functionality. This document also describes Objective Function which take advantage of this information to implement multi- path routing.
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