diff --git a/net/sixlowpan/Kconfig b/net/sixlowpan/Kconfig
index 4505a7ee880..1a3882d1ad3 100644
--- a/net/sixlowpan/Kconfig
+++ b/net/sixlowpan/Kconfig
@@ -124,6 +124,9 @@ endif # NET_6LOWPAN_COMPRESSION_HC06
 config NET_6LOWPAN_RIMEADDR_SIZE
 	int "Rime address size"
 	default 2
+	range 2 8
+	---help---
+		Only the values 2 and 8 are supported
 
 config NET_SIXLOWPAN_MAXAGE
 	int "Packet reassembly timeout"
diff --git a/net/sixlowpan/sixlowpan.h b/net/sixlowpan/sixlowpan.h
index 46a282b41da..3acd0f48042 100644
--- a/net/sixlowpan/sixlowpan.h
+++ b/net/sixlowpan/sixlowpan.h
@@ -45,10 +45,24 @@
 
 #ifdef CONFIG_NET_6LOWPAN
 
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* Rime addres macros */
+
+#define rimeaddr_copy(dest,src) \
+  memcpy(dest, src, CONFIG_NET_6LOWPAN_RIMEADDR_SIZE)
+
+#define rimeaddr_cmp(addr1,addr2) \
+  (memcmp(addr1, addr2, CONFIG_NET_6LOWPAN_RIMEADDR_SIZE) == 0)
+
 /****************************************************************************
  * Public Types
  ****************************************************************************/
 
+/* Rime address representation */
+
 struct rimeaddr_s
 {
   uint8_t u8[CONFIG_NET_6LOWPAN_RIMEADDR_SIZE];