1. A method, comprising: receiving a distributed message from one or more distributing nodes at a particular node in a primary directed acyclic graph (DAG) in a computer network; deterministically selecting a distributing node from the one or more distributing nodes as a distributing parent for a secondary DAG from which distributed messages are to be received; informing the deterministically selected distributing node that the particular node is using the deterministically selected distributing node as the distributing parent; and in response to the distributing parent not being a primary DAG parent of the particular node, informing the primary DAG parent that the primary DAG parent need not send distributed messages for the particular node.