-#define ND_OPT_SOURCE_LL_ADDR 1
-#define ND_OPT_TARGET_LL_ADDR 2
-#define ND_OPT_PREFIX_INFO 3
-#define ND_OPT_REDIRECT_HDR 4
-#define ND_OPT_MTU 5
+enum {
+ __ND_OPT_PREFIX_INFO_END = 0,
+ ND_OPT_SOURCE_LL_ADDR = 1, /* RFC2461 */
+ ND_OPT_TARGET_LL_ADDR = 2, /* RFC2461 */
+ ND_OPT_PREFIX_INFO = 3, /* RFC2461 */
+ ND_OPT_REDIRECT_HDR = 4, /* RFC2461 */
+ ND_OPT_MTU = 5, /* RFC2461 */
+ __ND_OPT_ARRAY_MAX,
+ ND_OPT_ROUTE_INFO = 24, /* RFC4191 */
+ __ND_OPT_MAX
+};