--- v2.4.5/linux/include/net/ip_fib.h~	Sat Jun  2 09:41:52 2001
+++ linux/include/net/ip_fib.h	Sat Jun  2 11:10:25 2001
@@ -203,7 +203,7 @@
 extern int inet_rtm_getroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
 extern int inet_dump_fib(struct sk_buff *skb, struct netlink_callback *cb);
 extern int fib_validate_source(u32 src, u32 dst, u8 tos, int oif,
-			       struct net_device *dev, u32 *spec_dst, u32 *itag);
+			       struct net_device *dev, u32 *spec_dst, u32 *itag, int our);
 extern void fib_select_multipath(const struct rt_key *key, struct fib_result *res);
 
 /* Exported by fib_semantics.c */
--- v2.4.5/linux/net/ipv4/fib_frontend.c~	Sat Jun  2 08:59:38 2001
+++ linux/net/ipv4/fib_frontend.c	Sat Jun  2 11:10:25 2001
@@ -204,7 +204,8 @@
  */
 
 int fib_validate_source(u32 src, u32 dst, u8 tos, int oif,
-			struct net_device *dev, u32 *spec_dst, u32 *itag)
+			struct net_device *dev, u32 *spec_dst, u32 *itag,
+			int our)
 {
 	struct in_device *in_dev;
 	struct rt_key key;
@@ -233,7 +234,8 @@
 
 	if (fib_lookup(&key, &res))
 		goto last_resort;
-	if (res.type != RTN_UNICAST)
+	if ((res.type != RTN_UNICAST) &&
+		((res.type != RTN_LOCAL) || our))
 		goto e_inval_res;
 	*spec_dst = FIB_RES_PREFSRC(res);
 	if (itag)
@@ -244,6 +246,10 @@
 	if (FIB_RES_DEV(res) == dev)
 #endif
 	{
+		if (res.type == RTN_LOCAL) {
+			*itag = 0;
+			goto e_inval_res;
+		}
 		ret = FIB_RES_NH(res).nh_scope >= RT_SCOPE_HOST;
 		fib_res_put(&res);
 		return ret;
@@ -254,6 +260,7 @@
 	if (rpf)
 		goto e_inval;
 	key.oif = dev->ifindex;
+	if (res.type == RTN_LOCAL) key.iif = loopback_dev.ifindex;
 
 	ret = 0;
 	if (fib_lookup(&key, &res) == 0) {
--- v2.4.5/linux/net/ipv4/route.c~	Sat Jun  2 08:59:39 2001
+++ linux/net/ipv4/route.c	Sat Jun  2 11:15:31 2001
@@ -1206,7 +1206,7 @@
 			goto e_inval;
 		spec_dst = inet_select_addr(dev, 0, RT_SCOPE_LINK);
 	} else if (fib_validate_source(saddr, 0, tos, 0,
-					dev, &spec_dst, &itag) < 0)
+					dev, &spec_dst, &itag, our) < 0)
 		goto e_inval;
 
 	rth = dst_alloc(&ipv4_dst_ops);
@@ -1367,7 +1367,7 @@
 		int result;
 		result = fib_validate_source(saddr, daddr, tos,
 					     loopback_dev.ifindex,
-					     dev, &spec_dst, &itag);
+					     dev, &spec_dst, &itag, 1);
 		if (result < 0)
 			goto martian_source;
 		if (result)
@@ -1394,7 +1394,7 @@
 	}
 
 	err = fib_validate_source(saddr, daddr, tos, FIB_RES_OIF(res), dev,
-				  &spec_dst, &itag);
+				  &spec_dst, &itag, 0);
 	if (err < 0)
 		goto martian_source;
 
@@ -1478,7 +1478,7 @@
 		spec_dst = inet_select_addr(dev, 0, RT_SCOPE_LINK);
 	else {
 		err = fib_validate_source(saddr, 0, tos, 0, dev, &spec_dst,
-					  &itag);
+					  &itag, 1);
 		if (err < 0)
 			goto martian_source;
 		if (err)