diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 2f4c39c5b..3303c7c9a 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,7 @@
+2003-07-25  Christopher Faylor  <cgf@redhat.com>
+
+	* include/cygwin/socket.h: Conditionalize [AP]F_INET6 define.
+
 2003-07-25  Christopher Faylor  <cgf@redhat.com>
 
 	* Makefile.in (OBSOLETE_FUNCTION):  Add fdopen.
diff --git a/winsup/cygwin/include/cygwin/socket.h b/winsup/cygwin/include/cygwin/socket.h
index f89a8ed87..67e1345f2 100644
--- a/winsup/cygwin/include/cygwin/socket.h
+++ b/winsup/cygwin/include/cygwin/socket.h
@@ -75,7 +75,9 @@ struct msghdr
 #define AF_HYLINK       15              /* NSC Hyperchannel */
 #define AF_APPLETALK    16              /* AppleTalk */
 #define AF_NETBIOS      17              /* NetBios-style addresses */
+#if 0					/* Not yet */
 #define AF_INET6        23              /* IP version 6 */
+#endif
 
 #define AF_MAX          32
 /*
@@ -101,7 +103,9 @@ struct msghdr
 #define PF_HYLINK       AF_HYLINK
 #define PF_APPLETALK    AF_APPLETALK
 #define PF_NETBIOS      AF_NETBIOS
+#if 0
 #define PF_INET6        AF_INET6
+#endif
 
 #define PF_MAX          AF_MAX