diff --git a/src/relay_server.rs b/src/relay_server.rs
index decc128..15f630f 100644
--- a/src/relay_server.rs
+++ b/src/relay_server.rs
@@ -25,7 +25,7 @@ pub const DEFAULT_PORT: &'static str = "21117";
 #[tokio::main(basic_scheduler)]
 pub async fn start(port: &str, license: &str, stop: Arc<Mutex<bool>>) -> ResultType<()> {
     let addr = format!("0.0.0.0:{}", port);
-    log::info!("Listening on {}", addr);
+    log::info!("Listening on tcp {}", addr);
     let mut timer = interval(Duration::from_millis(300));
     let mut listener = new_listener(addr, false).await?;
     loop {
diff --git a/src/rendezvous_server.rs b/src/rendezvous_server.rs
index 08a460a..8ed01a3 100644
--- a/src/rendezvous_server.rs
+++ b/src/rendezvous_server.rs
@@ -163,6 +163,8 @@ impl RendezvousServer {
         license: &str,
         stop: Arc<Mutex<bool>>,
     ) -> ResultType<()> {
+        log::info!("Listening on tcp/udp {}", addr);
+        log::info!("Listening on tcp {}, extra port for NAT test", addr2);
         let mut socket = FramedSocket::new(addr).await?;
         let (tx, mut rx) = mpsc::unbounded_channel::<(RendezvousMessage, SocketAddr)>();
         let version = hbb_common::get_version_from_url(&software_url);