diff -ur iproute2/ip/ipaddress.c iproute2-noarp/ip/ipaddress.c
--- iproute2/ip/ipaddress.c	Sun Sep 10 19:03:26 2000
+++ iproute2-noarp/ip/ipaddress.c	Sun May 27 19:07:13 2001
@@ -60,7 +60,7 @@
 	if (do_link) {
 		iplink_usage();
 	}
-	fprintf(stderr, "Usage: ip addr {add|del} IFADDR dev STRING\n");
+	fprintf(stderr, "Usage: ip addr {add|del} IFADDR dev STRING [ hidden ]\n");
 	fprintf(stderr, "       ip addr {show|flush} [ dev STRING ] [ scope SCOPE-ID ]\n");
 	fprintf(stderr, "                            [ to PREFIX ] [ FLAG-LIST ] [ label PATTERN ]\n");
 	fprintf(stderr, "IFADDR := PREFIX | ADDR peer PREFIX\n");
@@ -69,7 +69,7 @@
 	fprintf(stderr, "SCOPE-ID := [ host | link | global | NUMBER ]\n");
 	fprintf(stderr, "FLAG-LIST := [ FLAG-LIST ] FLAG\n");
 	fprintf(stderr, "FLAG  := [ permanent | dynamic | secondary | primary |\n");
-	fprintf(stderr, "           tentative | deprecated ]\n");
+	fprintf(stderr, "           tentative | deprecated | hidden ]\n");
 	exit(-1);
 }
 
@@ -400,6 +400,12 @@
 		ifa->ifa_flags &= ~IFA_F_SECONDARY;
 		fprintf(fp, "secondary ");
 	}
+#ifdef IFA_F_HIDDEN
+	if (ifa->ifa_flags&IFA_F_HIDDEN) {
+		ifa->ifa_flags &= ~IFA_F_HIDDEN;
+		fprintf(fp, "hidden ");
+	}
+#endif
 	if (ifa->ifa_flags&IFA_F_TENTATIVE) {
 		ifa->ifa_flags &= ~IFA_F_TENTATIVE;
 		fprintf(fp, "tentative ");
@@ -541,6 +547,11 @@
 		} else if (strcmp(*argv, "primary") == 0) {
 			filter.flags &= ~IFA_F_SECONDARY;
 			filter.flagmask |= IFA_F_SECONDARY;
+#ifdef IFA_F_HIDDEN
+		} else if (strcmp(*argv, "hidden") == 0) {
+			filter.flags &= ~IFA_F_HIDDEN;
+			filter.flagmask |= IFA_F_HIDDEN;
+#endif
 		} else if (strcmp(*argv, "tentative") == 0) {
 			filter.flags |= IFA_F_TENTATIVE;
 			filter.flagmask |= IFA_F_TENTATIVE;
@@ -792,6 +803,11 @@
 		} else if (strcmp(*argv, "dev") == 0) {
 			NEXT_ARG();
 			d = *argv;
+		} else if (strcmp(*argv, "hidden") == 0 ||
+			   strcmp(*argv, "noarp") == 0) {
+#ifdef IFA_F_HIDDEN
+			req.ifa.ifa_flags |= IFA_F_HIDDEN;
+#endif
 		} else if (strcmp(*argv, "label") == 0) {
 			NEXT_ARG();
 			l = *argv;
diff -ur iproute2/ip/iproute.c iproute2-noarp/ip/iproute.c
--- iproute2/ip/iproute.c	Sat Sep  9 18:31:13 2000
+++ iproute2-noarp/ip/iproute.c	Sun May 27 16:44:12 2001
@@ -61,7 +61,7 @@
 	fprintf(stderr, "          unreachable | prohibit | blackhole | nat ]\n");
 	fprintf(stderr, "TABLE_ID := [ local | main | default | all | NUMBER ]\n");
 	fprintf(stderr, "SCOPE := [ host | link | global | NUMBER ]\n");
-	fprintf(stderr, "FLAGS := [ equalize ]\n");
+	fprintf(stderr, "FLAGS := [ equalize | noarp ]\n");
 	fprintf(stderr, "NHFLAGS := [ onlink | pervasive ]\n");
 	fprintf(stderr, "RTPROTO := [ kernel | boot | static | NUMBER ]\n");
 	exit(-1);
@@ -355,6 +355,10 @@
 		fprintf(fp, "pervasive ");
 	if (r->rtm_flags & RTM_F_EQUALIZE)
 		fprintf(fp, "equalize ");
+#ifdef RTM_F_NOARP
+	if (r->rtm_flags & RTM_F_NOARP)
+		fprintf(fp, "noarp ");
+#endif
 	if (r->rtm_flags & RTM_F_NOTIFY)
 		fprintf(fp, "notify ");
 
@@ -392,6 +396,9 @@
 		PRTFL(REDIRECTED, "redirected");
 		PRTFL(DOREDIRECT, "redirect");
 		PRTFL(FAST, "fastroute");
+#ifdef RTCF_NOARP
+		PRTFL(NOARP, "noarp");
+#endif
 		PRTFL(NOTIFY, "notify");
 #ifdef RTCF_EQUALIZE
 		PRTFL(EQUALIZE, "equalize");
@@ -801,6 +808,10 @@
 		} else if (matches(*argv, "equalize") == 0 ||
 			   strcmp(*argv, "eql") == 0) {
 			req.r.rtm_flags |= RTM_F_EQUALIZE;
+#ifdef RTM_F_NOARP
+		} else if (matches(*argv, "noarp") == 0) {
+			req.r.rtm_flags |= RTM_F_NOARP;
+#endif
 		} else if (strcmp(*argv, "nexthop") == 0) {
 			nhs_ok = 1;
 			break;