Index: sys/netinet/libalias/alias_db.c
===================================================================
--- sys/netinet/libalias/alias_db.c
+++ sys/netinet/libalias/alias_db.c
@@ -224,6 +224,8 @@
 #define NO_DEST_PORT     1
 #define NO_SRC_PORT      1
 
+struct in_addr NO_ADDR;	/* Used as a dummy parameter */
+
 /* Data Structures
 
     The fundamental data structure used in this program is
@@ -1117,12 +1119,12 @@
 			lnk = _FindLinkOut(la, src_addr, dst_addr, src_port, 0,
 			    link_type, 0);
 			if (lnk == NULL)
-				lnk = _FindLinkOut(la, src_addr, la->nullAddress, src_port,
+				lnk = _FindLinkOut(la, src_addr, NO_ADDR, src_port,
 				    dst_port, link_type, 0);
 		}
 		if (lnk == NULL &&
 		    (dst_port != 0 || dst_addr.s_addr != INADDR_ANY)) {
-			lnk = _FindLinkOut(la, src_addr, la->nullAddress, src_port, 0,
+			lnk = _FindLinkOut(la, src_addr, NO_ADDR, src_port, 0,
 			    link_type, 0);
 		}
 		if (lnk != NULL) {
@@ -1158,7 +1160,7 @@
 		 */
 		if (la->aliasAddress.s_addr != INADDR_ANY &&
 		    src_addr.s_addr == la->aliasAddress.s_addr) {
-			lnk = _FindLinkOut(la, la->nullAddress, dst_addr, src_port, dst_port,
+			lnk = _FindLinkOut(la, NO_ADDR, dst_addr, src_port, dst_port,
 			    link_type, replace_partial_links);
 		}
 	}
@@ -1301,7 +1303,7 @@
 		 */
 		if (la->aliasAddress.s_addr != INADDR_ANY &&
 		    alias_addr.s_addr == la->aliasAddress.s_addr) {
-			lnk = _FindLinkIn(la, dst_addr, la->nullAddress, dst_port, alias_port,
+			lnk = _FindLinkIn(la, dst_addr, NO_ADDR, dst_port, alias_port,
 			    link_type, replace_partial_links);
 		}
 	}
@@ -1383,7 +1385,7 @@
 	    LINK_FRAGMENT_ID, 0);
 
 	if (lnk == NULL) {
-		lnk = AddLink(la, la->nullAddress, dst_addr, alias_addr,
+		lnk = AddLink(la, NO_ADDR, dst_addr, alias_addr,
 		    NO_SRC_PORT, NO_DEST_PORT, ip_id,
 		    LINK_FRAGMENT_ID);
 	}
@@ -1409,7 +1411,7 @@
 {
 
 	LIBALIAS_LOCK_ASSERT(la);
-	return AddLink(la, la->nullAddress, dst_addr, la->nullAddress,
+	return AddLink(la, NO_ADDR, dst_addr, NO_ADDR,
 	    NO_SRC_PORT, NO_DEST_PORT, ip_id,
 	    LINK_FRAGMENT_PTR);
 }
@@ -1420,7 +1422,7 @@
 {
 
 	LIBALIAS_LOCK_ASSERT(la);
-	return FindLinkIn(la, dst_addr, la->nullAddress,
+	return FindLinkIn(la, dst_addr, NO_ADDR,
 	    NO_DEST_PORT, ip_id,
 	    LINK_FRAGMENT_PTR, 0);
 }
@@ -1680,7 +1682,7 @@
 	struct alias_link *lnk;
 
 	LIBALIAS_LOCK_ASSERT(la);
-	lnk = FindLinkIn(la, la->nullAddress, alias_addr,
+	lnk = FindLinkIn(la, NO_ADDR, alias_addr,
 	    0, 0, LINK_ADDR, 0);
 	if (lnk == NULL) {
 		la->newDefaultLink = 1;
@@ -1712,7 +1714,7 @@
 	struct alias_link *lnk;
 
 	LIBALIAS_LOCK_ASSERT(la);
-	lnk = FindLinkOut(la, original_addr, la->nullAddress,
+	lnk = FindLinkOut(la, original_addr, NO_ADDR,
 	    0, 0, LINK_ADDR, 0);
 	if (lnk == NULL) {
 		return (la->aliasAddress.s_addr != INADDR_ANY) ?
@@ -2337,7 +2339,7 @@
 	struct alias_link *lnk;
 
 	LIBALIAS_LOCK(la);
-	lnk = AddLink(la, src_addr, la->nullAddress, alias_addr,
+	lnk = AddLink(la, src_addr, NO_ADDR, alias_addr,
 	    0, 0, 0,
 	    LINK_ADDR);
 
Index: sys/netinet/libalias/alias_local.h
===================================================================
--- sys/netinet/libalias/alias_local.h
+++ sys/netinet/libalias/alias_local.h
@@ -93,9 +93,6 @@
 	/* are sent to if no aliasing    */
 	/* link already exists           */
 
-	struct in_addr	nullAddress;	/* Used as a dummy parameter for   */
-	/* some function calls           */
-
 			LIST_HEAD     (, alias_link) linkTableOut[LINK_TABLE_OUT_SIZE];
 	/* Lookup table of pointers to     */
 	/* chains of link records. Each  */