From ded71a7400ec312bfbbf85c8971fcc9bfdd17fca Mon Sep 17 00:00:00 2001
From: Simon Duquennoy <simon.duquennoy@inria.fr>
Date: Mon, 25 Apr 2016 17:13:10 +0200
Subject: [PATCH] RPL: add neighbor to cache on incoming DIO also at the root

---
 core/net/rpl/rpl-dag.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/core/net/rpl/rpl-dag.c b/core/net/rpl/rpl-dag.c
index ced73990f..2077c4eb4 100644
--- a/core/net/rpl/rpl-dag.c
+++ b/core/net/rpl/rpl-dag.c
@@ -1527,6 +1527,11 @@ rpl_process_dio(uip_ipaddr_t *from, rpl_dio_t *dio)
     }
   }
 
+  if(!add_nbr_from_dio(from, dio)) {
+    PRINTF("RPL: Could not add parent based on DIO\n");
+    return;
+  }
+
   if(dag->rank == ROOT_RANK(instance)) {
     if(dio->rank != INFINITE_RANK) {
       instance->dio_counter++;
@@ -1547,11 +1552,6 @@ rpl_process_dio(uip_ipaddr_t *from, rpl_dio_t *dio)
    * whether to keep it in the set.
    */
 
-  if(!add_nbr_from_dio(from, dio)) {
-    PRINTF("RPL: Could not add parent based on DIO\n");
-    return;
-  }
-
   p = rpl_find_parent(dag, from);
   if(p == NULL) {
     previous_dag = find_parent_dag(instance, from);