diff --git a/include/linux/in6.h b/include/linux/in6.h
index 2a61c82..f674000 100644
--- a/include/linux/in6.h
+++ b/include/linux/in6.h
@@ -249,4 +249,15 @@
  * IP6T_SO_GET_REVISION_TARGET	69
  */
 
+/* RFC5014: Source address selection */
+#define IPV6_ADDR_PREFERENCES	72
+
+#define IPV6_PREFER_SRC_TMP		0x0001
+#define IPV6_PREFER_SRC_PUBLIC		0x0002
+#define IPV6_PREFER_SRC_PUBTMP_DEFAULT	0x0100
+#define IPV6_PREFER_SRC_COA		0x0004
+#define IPV6_PREFER_SRC_HOME		0x0400
+#define IPV6_PREFER_SRC_CGA		0x0008
+#define IPV6_PREFER_SRC_NONCGA		0x0800
+
 #endif