it's dead.
Index: sockio.h
===================================================================
RCS file: /cvs/src/sys/sys/sockio.h,v
retrieving revision 1.63
diff -u -p -r1.63 sockio.h
--- sockio.h 2 Mar 2016 00:00:16 -0000 1.63
+++ sockio.h 31 May 2016 18:56:49 -0000
@@ -54,7 +54,6 @@
#define SIOCGIFFLAGS _IOWR('i', 17, struct ifreq) /* get ifnet
flags */
#define SIOCGIFBRDADDR _IOWR('i', 35, struct ifreq) /* get
broadcast addr */
#define SIOCSIFBRDADDR _IOW('i', 19, struct ifreq) /* set
broadcast addr */
-#define OSIOCGIFCONF _IOWR('i', 20, struct ifconf) /* get ifnet
list */
#define SIOCGIFCONF _IOWR('i', 36, struct ifconf) /* get ifnet
list */
#define SIOCGIFNETMASK _IOWR('i', 37, struct ifreq) /* get net addr
mask */
#define SIOCSIFNETMASK _IOW('i', 22, struct ifreq) /* set net addr
mask */
