1 files changed, 1 insertions, 0 deletions

diff --git a/include/net/ndisc.h b/include/net/ndisc.h
index 6f9c25a76cd1..c02b6ad3f6c5 100644
--- a/include/net/ndisc.h
+++ b/include/net/ndisc.h
@@ -34,6 +34,7 @@ enum {
         __ND_OPT_ARRAY_MAX,
         ND_OPT_ROUTE_INFO = 24,         /* RFC4191 */
         ND_OPT_RDNSS = 25,              /* RFC5006 */
+        ND_OPT_DNSSL = 31,              /* RFC6106 */
         __ND_OPT_MAX
 };