--- sbin/routed/if.c
+++ sbin/routed/if.c
@@ -30,6 +30,8 @@
  */
 
 #include <stdint.h>
+#define	MYLOOP_MASKLEN 24
+#define	IN_MY_LOOP(i) (((in_addr_t)(i) & (0xFFFFFFFF << (32 - MYLOOP_MASKLEN))) == (127 << 24))
 
 #include "defs.h"
 #include "pathnames.h"
@@ -356,6 +356,7 @@
 int					/* 0=bad */
 check_dst(naddr addr)
 {
+	if (IN_MY_LOOP(addr)) return 0;
 	addr = ntohl(addr);
 
 	if (IN_CLASSA(addr)) {
@@ -363,7 +364,7 @@
 			return 1;	/* default */
 
 		addr >>= IN_CLASSA_NSHIFT;
-		return (addr != 0 && addr != IN_LOOPBACKNET);
+		return (addr != 0);
 	}
 
 	return (IN_CLASSB(addr) || IN_CLASSC(addr));