Presented herein is a recursive method to find a common ancestor to a source node (source), a destination node (destination), and intermediate nodes in a constrained network, as well as to compute shortcut route(s) in order to offload the root of mundane routing computations. The techniques presented herein provide methods to filter neighbor information that is provided to a common ancestor node in order to enable these operation in a constrained network.
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She, Huimin; Thubert, Pascal; Dong, Harbor; and Zhao, Li, "DISTRIBUTED DESTINATION ADVERTISEMENT OBJECT (DAO) PROJECTION FOR PEER-TO-PEER ROUTING IN LOW POWER AND LOSSY NETWORKS (LLNS)", Technical Disclosure Commons, (October 21, 2019)