diff --git a/usr.sbin/ndp/ndp.h b/usr.sbin/ndp/ndp.h
--- a/usr.sbin/ndp/ndp.h
+++ b/usr.sbin/ndp/ndp.h
@@ -20,7 +20,7 @@
 char *sec2str(time_t total);
 int getaddr(char *host, struct sockaddr_in6 *sin6);
 int print_entries_nl(uint32_t ifindex, struct sockaddr_in6 *addr, bool cflag);
-int delete_nl(uint32_t ifindex, char *host);
+int delete_nl(uint32_t ifindex, char *host, bool warn);
 int set_nl(uint32_t ifindex, struct sockaddr_in6 *dst, struct sockaddr_dl *sdl,
     char *host);
 
diff --git a/usr.sbin/ndp/ndp.c b/usr.sbin/ndp/ndp.c
--- a/usr.sbin/ndp/ndp.c
+++ b/usr.sbin/ndp/ndp.c
@@ -201,6 +201,7 @@
 {
 	int ch, mode = 0;
 	char *arg = NULL;
+	int ret = 0;
 
 	pid = getpid();
 	thiszone = utc_offset();
@@ -280,7 +281,7 @@
 			/*NOTREACHED*/
 		}
 		xo_open_list("neighbor-cache");
-		delete(arg);
+		ret = delete(arg);
 		xo_close_list("neighbor-cache");
 		break;
 	case 'I':
@@ -353,7 +354,8 @@
 	}
 	xo_close_container("ndp");
 	xo_finish();
-	exit(0);
+
+	return (ret);
 }
 
 /*
@@ -841,7 +843,7 @@
 delete(char *host)
 {
 #ifndef WITHOUT_NETLINK
-	return (delete_nl(0, host));
+	return (delete_nl(0, host, true)); /* do warn */
 #else
 	return (delete_rtsock(host));
 #endif
diff --git a/usr.sbin/ndp/ndp_netlink.c b/usr.sbin/ndp/ndp_netlink.c
--- a/usr.sbin/ndp/ndp_netlink.c
+++ b/usr.sbin/ndp/ndp_netlink.c
@@ -180,7 +180,7 @@
 
 	int off = snl_add_msg_attr_nested(&nw, NHA_FREEBSD);
 	snl_add_msg_attr_u32(&nw, NHAF_KID, r.rta_knh_id);
-	snl_add_msg_attr_u8(&nw, NHAF_FAMILY, AF_INET);
+	snl_add_msg_attr_u8(&nw, NHAF_FAMILY, AF_INET6);
 	snl_add_msg_attr_u32(&nw, NHAF_TABLE, fibnum);
 	snl_end_attr_nested(&nw, off);
 
@@ -372,13 +372,14 @@
 				continue;
 		}
 
-		print_entry(&neigh, &link);
 		if (cflag) {
 			char dst_str[INET6_ADDRSTRLEN];
 
 			inet_ntop(AF_INET6, &dst->sin6_addr, dst_str, sizeof(dst_str));
-			delete_nl(neigh.nda_ifindex, dst_str);
-		}
+			delete_nl(neigh.nda_ifindex, dst_str, false); /* no warn */
+		} else
+			print_entry(&neigh, &link);
+
 		count++;
 		snl_clear_lb(&ss_req);
 	}
@@ -391,8 +392,9 @@
 }
 
 int
-delete_nl(uint32_t ifindex, char *host)
+delete_nl(uint32_t ifindex, char *host, bool warn)
 {
+#define xo_warnx(...) do { if (warn) { xo_warnx(__VA_ARGS__); } } while(0)
 	struct snl_state ss = {};
 	struct snl_writer nw;
 	struct sockaddr_in6 dst;
@@ -458,6 +460,7 @@
 	snl_free(&ss);
 
 	return (e.error != 0);
+#undef xo_warnx /* see above */
 }
 
 int