diff --git a/include/ntapi/nt_socket.h b/include/ntapi/nt_socket.h
index 9479aa4..7e433b9 100644
--- a/include/ntapi/nt_socket.h
+++ b/include/ntapi/nt_socket.h
@@ -140,6 +140,37 @@
 
 
 
+/* afd ipv6 socket options */
+#define NT_IPV6_HOPOPTS				1
+#define NT_IPV6_HDRINCL				2
+#define NT_IPV6_UNICAST_HOPS			4
+#define NT_IPV6_MULTICAST_IF			9
+#define NT_IPV6_MULTICAST_HOPS			10
+#define NT_IPV6_MULTICAST_LOOP			11
+#define NT_IPV6_ADD_MEMBERSHIP			12
+#define NT_IPV6_DROP_MEMBERSHIP			13
+#define NT_IPV6_DONTFRAG			14
+#define NT_IPV6_PKTINFO				19
+#define NT_IPV6_HOPLIMIT			21
+#define NT_IPV6_PROTECTION_LEVEL		23
+#define NT_IPV6_RECVIF				24
+#define NT_IPV6_RECVDSTADDR			25
+#define NT_IPV6_CHECKSUM			26
+#define NT_IPV6_V6ONLY				27
+#define NT_IPV6_IFLIST				28
+#define NT_IPV6_ADD_IFLIST			29
+#define NT_IPV6_DEL_IFLIST			30
+#define NT_IPV6_UNICAST_IF			31
+#define NT_IPV6_RTHDR				32
+#define NT_IPV6_RECVRTHDR			38
+#define NT_IPV6_TCLASS				39
+#define NT_IPV6_RECVTCLASS			40
+
+#define NT_IPV6_JOIN_GROUP			IPV6_ADD_MEMBERSHIP
+#define NT_IPV6_LEAVE_GROUP			IPV6_DROP_MEMBERSHIP
+
+
+
 /* tdi receive modes */
 #define NT_TDI_RECEIVE_BROADCAST		(0x0004u)
 #define NT_TDI_RECEIVE_MULTICAST		(0x0008u)