diff -ur src.2019-09-09/sys/net/route.c src/sys/net/route.c
--- src.2019-09-09/sys/net/route.c	2019-03-14 03:22:43.000000000 +0300
+++ src/sys/net/route.c	2019-10-10 17:13:44.521682000 +0300
@@ -1563,18 +1563,27 @@
 		if (error != 0)
 			return (error);
 
-		rt_notifydelete(rt, info);
+//		printf("Debug: rtrequest1_fib(): [%s:%d]: rt = %p, rnh = %p, info = %p\n", __func__, __LINE__, rt, rnh, info);
 
 		/*
 		 * If the caller wants it, then it can have it,
 		 * but it's up to it to free the rtentry as we won't be
 		 * doing it.
 		 */
-		if (ret_nrt) {
+		if (ret_nrt)
 			*ret_nrt = rt;
-			RT_UNLOCK(rt);
-		} else
-			RTFREE_LOCKED(rt);
+
+		if (rt != NULL) {
+			rt_notifydelete(rt, info);
+
+			if (ret_nrt)
+				RT_UNLOCK(rt);
+			else
+				RTFREE_LOCKED(rt);
+//		} else {
+//			printf("Debug: rtrequest1_fib(): [%s:%d]: Empty result from rt_unlinkrte(): rt = %p, rnh = %p, info = %p\n", __func__, __LINE__, rt, rnh, info);
+		}
+//		printf("Debug: rtrequest1_fib(): [%s:%d]: No crash\n", __func__, __LINE__);
 		break;
 	case RTM_RESOLVE:
 		/*
diff -ur src.2019-09-09/sys/net/rtsock.c src/sys/net/rtsock.c
--- src.2019-09-09/sys/net/rtsock.c	2019-03-14 03:22:43.000000000 +0300
+++ src/sys/net/rtsock.c	2019-10-10 14:34:48.857770000 +0300
@@ -721,7 +721,7 @@
 			break;
 		}
 		error = rtrequest1_fib(RTM_DELETE, &info, &saved_nrt, fibnum);
-		if (error == 0) {
+		if (error == 0 && saved_nrt != NULL) {
 			RT_LOCK(saved_nrt);
 			rt = saved_nrt;
 			goto report;