rpl_verify_header: do not select DAG in storing mode after updating neighbor rank, as this may result in a No-Path DAO being sent, which will drop the current packet.
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@ -136,8 +136,13 @@ rpl_verify_hbh_header(int uip_ext_opt_offset)
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/* A rank error was signalled, attempt to repair it by updating
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* the sender's rank from ext header */
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sender->rank = sender_rank;
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if(RPL_IS_NON_STORING(instance)) {
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/* Select DAG and preferred parent only in non-storing mode. In storing mode,
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* a parent switch would result in an immediate No-path DAO transmission, dropping
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* current incoming packet. */
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rpl_select_dag(instance, sender);
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}
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}
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sender_closer = sender_rank < instance->current_dag->rank;
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