diff --git a/newlib/libc/sys/rtems/include/net/if.h b/newlib/libc/sys/rtems/include/net/if.h
index a5539bdcd..c7c5e8669 100644
--- a/newlib/libc/sys/rtems/include/net/if.h
+++ b/newlib/libc/sys/rtems/include/net/if.h
@@ -29,7 +29,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)if.h	8.1 (Berkeley) 6/10/93
- * $FreeBSD: head/sys/net/if.h 340968 2018-11-26 13:42:18Z markj $
+ * $FreeBSD: head/sys/net/if.h 352458 2019-09-17 18:49:13Z kib $
  */
 
 #ifndef _NET_IF_H_
@@ -585,6 +585,16 @@ struct ifrsshash {
 
 #define	IFNET_PCP_NONE	0xff	/* PCP disabled */
 
+#define	IFDR_MSG_SIZE		64
+#define	IFDR_REASON_MSG		1
+#define	IFDR_REASON_VENDOR	2
+struct ifdownreason {
+	char		ifdr_name[IFNAMSIZ];
+	uint32_t	ifdr_reason;
+	uint32_t	ifdr_vendor;
+	char		ifdr_msg[IFDR_MSG_SIZE];
+};
+
 #endif /* __BSD_VISIBLE */
 
 #ifndef _KERNEL
diff --git a/newlib/libc/sys/rtems/include/sys/sockio.h b/newlib/libc/sys/rtems/include/sys/sockio.h
index 786202a58..7f33ffaef 100644
--- a/newlib/libc/sys/rtems/include/sys/sockio.h
+++ b/newlib/libc/sys/rtems/include/sys/sockio.h
@@ -29,7 +29,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)sockio.h	8.1 (Berkeley) 3/28/94
- * $FreeBSD: head/sys/sys/sockio.h 331622 2018-03-27 15:29:32Z kib $
+ * $FreeBSD: head/sys/sys/sockio.h 352458 2019-09-17 18:49:13Z kib $
  */
 
 #ifndef _SYS_SOCKIO_H_
@@ -143,4 +143,6 @@
 #define	SIOCGLANPCP	_IOWR('i', 152, struct ifreq)	/* Get (V)LAN PCP */
 #define	SIOCSLANPCP	 _IOW('i', 153, struct ifreq)	/* Set (V)LAN PCP */
 
+#define	SIOCGIFDOWNREASON	_IOWR('i', 154, struct ifdownreason)
+
 #endif /* !_SYS_SOCKIO_H_ */