diff --git a/core/net/rpl/rpl-dag.c b/core/net/rpl/rpl-dag.c
index 7403f9931..20507449d 100644
--- a/core/net/rpl/rpl-dag.c
+++ b/core/net/rpl/rpl-dag.c
@@ -60,6 +60,11 @@
 #define DEBUG DEBUG_NONE
 #include "net/ip/uip-debug.h"
 
+/* A configurable function called after every RPL parent switch */
+#ifdef RPL_CALLBACK_PARENT_SWITCH
+void RPL_CALLBACK_PARENT_SWITCH(rpl_parent_t *old, rpl_parent_t *new);
+#endif /* RPL_CALLBACK_PARENT_SWITCH */
+
 /*---------------------------------------------------------------------------*/
 extern rpl_of_t RPL_OF;
 static rpl_of_t * const objective_functions[] = {&RPL_OF};
@@ -188,6 +193,10 @@ rpl_set_preferred_parent(rpl_dag_t *dag, rpl_parent_t *p)
     }
     PRINTF("\n");
 
+#ifdef RPL_CALLBACK_PARENT_SWITCH
+    RPL_CALLBACK_PARENT_SWITCH(dag->preferred_parent, p);
+#endif /* RPL_CALLBACK_PARENT_SWITCH */
+
     /* Always keep the preferred parent locked, so it remains in the
      * neighbor table. */
     nbr_table_unlock(rpl_parents, dag->preferred_parent);