set default for lookaround

goatherd.go

@@ -647,6 +647,7 @@ func main() {
 	flagConfig := flag.String("config", "/etc/goatherd.conf", "Path to config file")
 	flag.StringVar(&cfg.DbURL, "db-url", "", "URL used to connect to the database.")
 	flag.Uint64Var(&cfg.Lookahead, "lookahead", 10, "Counter range to check for matching OTPs.")
+	flag.Uint64Var(&cfg.Lookaround, "lookaround", 2, "Allow time based counter offset to check for matching OTPs.")
 	flag.BoolVar(&cfg.Debug, "debug", false, "Enable debug output.")
 	flag.DurationVar(&cfg.Faildelay.Duration, "faildelay", 1*time.Second,
 		"Per-user delay after a failed authentication attempt.")