Index: freebsd-head/usr.bin/newkey/newkey.c
===================================================================
--- freebsd-head/usr.bin/newkey/newkey.c	(revision 239313)
+++ freebsd-head/usr.bin/newkey/newkey.c	(working copy)
@@ -125,13 +125,15 @@ main(int argc, char *argv[])
 		(void)user2netname(name, (int)pw->pw_uid, (char *)NULL);
 	} else {
 #ifdef undef
-		h = gethostbyname(argv[2]);
+		h = gethostbyname(argv[2]); /* If ever turned on, this needs to be IPv6 ready. */
 		if (h == NULL)
 			errx(1, "unknown host: %s", argv[1]);
-		(void)host2netname(name, h->h_name, (char *)NULL);
+		status = host2netname(name, h->h_name, (char *)NULL);
 #else
-		(void)host2netname(name, argv[2], (char *)NULL);
+		status = host2netname(name, argv[2], (char *)NULL);
 #endif
+		if (status == FALSE)
+			errx(1, "unable to generate netname");
 	}
 
 	(void)printf("Adding new key for %s.\n", name);