diff --git a/core/net/rpl/Makefile.rpl b/core/net/rpl/Makefile.rpl
index 68f67f2bc..88d5c4775 100644
--- a/core/net/rpl/Makefile.rpl
+++ b/core/net/rpl/Makefile.rpl
@@ -1,2 +1,2 @@
 CONTIKI_SOURCEFILES += rpl.c rpl-dag.c rpl-icmp6.c rpl-timers.c \
-	rpl-of-etx.c
+	rpl-of-etx.c rpl-ext-header.c
diff --git a/core/net/rpl/rpl-dag.c b/core/net/rpl/rpl-dag.c
old mode 100644
new mode 100755
index 7a96887cc..0310c1727
--- a/core/net/rpl/rpl-dag.c
+++ b/core/net/rpl/rpl-dag.c
@@ -567,7 +567,6 @@ rpl_select_dodag(rpl_instance_t * instance, rpl_parent_t *p)
     return NULL;
   }
 
-<<<<<<< HEAD
   if(instance->current_dag != best_dag) {
     /* Remove routes installed by DAOs. */
     rpl_remove_routes(instance->current_dag);
@@ -758,7 +757,7 @@ rpl_get_dodag(uint8_t instance_id, uip_ipaddr_t *dag_id)
 
   for(i = 0; i < RPL_MAX_DODAG_PER_INSTANCE; ++i) {
     dag = &instance->dag_table[i];
-    if(dag->used && !uip_ipaddr_cmp(dag->dag_id, dag_id)) {
+    if(dag->used && !uip_ipaddr_cmp(&dag->dag_id, dag_id)) {
       return dag;
     }
   }
diff --git a/core/net/rpl/rpl-icmp6.c b/core/net/rpl/rpl-icmp6.c
old mode 100644
new mode 100755
index fe496c928..2dcc33f8b
--- a/core/net/rpl/rpl-icmp6.c
+++ b/core/net/rpl/rpl-icmp6.c
@@ -82,6 +82,16 @@ void RPL_DEBUG_DAO_OUTPUT(rpl_parent_t *);
 #endif
 
 static uint8_t dao_sequence = RPL_LOLLIPOP_INIT;
+
+/* some debug callbacks useful when debugging RPL networks */
+#ifdef RPL_DEBUG_DIO_INPUT
+void RPL_DEBUG_DIO_INPUT(uip_ipaddr_t *, rpl_dio_t *);
+#endif
+
+#ifdef RPL_DEBUG_DAO_OUTPUT
+void RPL_DEBUG_DAO_OUTPUT(rpl_parent_t *);
+#endif
+
 /*---------------------------------------------------------------------------*/
 static int
 get_global_addr(uip_ipaddr_t *addr)
@@ -407,6 +417,7 @@ dio_output(rpl_instance_t *instance, uip_ipaddr_t *uc_addr)
   buffer = UIP_ICMP_PAYLOAD;
   buffer[pos++] = instance->instance_id;
   buffer[pos++] = dag->version;
+
 #if RPL_LEAF_ONLY
   set16(buffer, pos, INFINITE_RANK);
 #else /* RPL_LEAF_ONLY */
@@ -460,6 +471,7 @@ dio_output(rpl_instance_t *instance, uip_ipaddr_t *uc_addr)
       return;
     }
   }
+#endif /* !RPL_LEAF_ONLY */
 
   /* Always add a DAG configuration option. */
   buffer[pos++] = RPL_OPTION_DAG_CONF;
diff --git a/core/net/rpl/rpl.h b/core/net/rpl/rpl.h
index 4132d429c..9dcfba586 100644
--- a/core/net/rpl/rpl.h
+++ b/core/net/rpl/rpl.h
@@ -335,13 +335,13 @@ struct rpl_instance {
 /* Public RPL functions. */
 void rpl_init(void);
 rpl_dag_t *rpl_set_root(uint8_t instance_id, uip_ipaddr_t * dag_id);
-int rpl_set_prefix(rpl_dag_t *dag, uip_ipaddr_t *prefix, int len);
+int rpl_set_prefix(rpl_dag_t *dag, uip_ipaddr_t *prefix, unsigned len);
 int rpl_repair_root(uint8_t instance_id);
 int rpl_set_default_route(rpl_instance_t *instance, uip_ipaddr_t *from);
 rpl_dag_t *rpl_get_any_dag(void);
-rpl_dag_t *rpl_get_dodag(uint8_t instance_id,uip_ipaddr_t * dag_id);
+rpl_dag_t *rpl_get_dodag(uint8_t instance_id, uip_ipaddr_t *dag_id);
 rpl_instance_t *rpl_get_instance(uint8_t instance_id);
-int rpl_add_header(rpl_instance_t *instance,int down);
+int rpl_add_header(rpl_instance_t *instance, int down);
 int rpl_add_header_root(void);
 void rpl_remove_header(void);
 u8_t rpl_invert_header(void);
diff --git a/examples/ipv6/rpl-udp/Makefile b/examples/ipv6/rpl-udp/Makefile
index 6c7e2cb7a..e4ea78e28 100644
--- a/examples/ipv6/rpl-udp/Makefile
+++ b/examples/ipv6/rpl-udp/Makefile
@@ -4,6 +4,7 @@ CONTIKI=../../..
 
 WITH_UIP6=1
 UIP_CONF_IPV6=1
+
 CFLAGS+= -DUIP_CONF_IPV6_RPL
 
 ifdef WITH_COMPOWER