diff --git a/easytier-core/Cargo.toml b/easytier-core/Cargo.toml
index 601cadc3..5408d009 100644
--- a/easytier-core/Cargo.toml
+++ b/easytier-core/Cargo.toml
@@ -13,7 +13,7 @@ path = "src/rpc/lib.rs"
 
 [dependencies]
 tracing = { version = "0.1", features = ["log"] }
-tracing-subscriber = { version = "0.3", features = ["env-filter"] }
+tracing-subscriber = { version = "0.3", features = ["env-filter", "local-time", "time"] }
 tracing-appender = "0.2.3"
 log = "0.4"
 thiserror = "1.0"
diff --git a/easytier-core/src/main.rs b/easytier-core/src/main.rs
index 0bde9c98..11329529 100644
--- a/easytier-core/src/main.rs
+++ b/easytier-core/src/main.rs
@@ -50,6 +50,7 @@ fn init_logger() {
     file_layer.set_ansi(false);
     let file_layer = file_layer
         .with_writer(file_appender)
+        .with_timer(tracing_subscriber::fmt::time::OffsetTime::local_rfc_3339().unwrap())
         .with_filter(file_filter);
 
     // logger to console
@@ -59,6 +60,7 @@ fn init_logger() {
         .unwrap();
     let console_layer = tracing_subscriber::fmt::layer()
         .pretty()
+        .with_timer(tracing_subscriber::fmt::time::OffsetTime::local_rfc_3339().unwrap())
         .with_writer(std::io::stderr)
         .with_filter(console_filter);
 
diff --git a/easytier-core/src/peers/peer.rs b/easytier-core/src/peers/peer.rs
index e56a1b7a..1edbd2ba 100644
--- a/easytier-core/src/peers/peer.rs
+++ b/easytier-core/src/peers/peer.rs
@@ -100,6 +100,7 @@ impl Peer {
     pub async fn add_peer_conn(&self, mut conn: PeerConn) {
         conn.set_close_event_sender(self.close_event_sender.clone());
         conn.start_recv_loop(self.packet_recv_chan.clone());
+        conn.start_pingpong();
         self.global_ctx
             .issue_event(GlobalCtxEvent::PeerConnAdded(conn.get_conn_info()));
         self.conns
diff --git a/easytier-core/src/peers/peer_conn.rs b/easytier-core/src/peers/peer_conn.rs
index ef981db8..cfbab4eb 100644
--- a/easytier-core/src/peers/peer_conn.rs
+++ b/easytier-core/src/peers/peer_conn.rs
@@ -211,9 +211,12 @@ impl PeerConnPinger {
 
         let (ping_res_sender, mut ping_res_receiver) = tokio::sync::mpsc::channel(100);
 
+        let stopped = Arc::new(AtomicU32::new(0));
+
         // generate a pingpong task every 200ms
         let mut pingpong_tasks = JoinSet::new();
         let ctrl_resp_sender = self.ctrl_sender.clone();
+        let stopped_clone = stopped.clone();
         self.tasks.spawn(async move {
             let mut req_seq = 0;
             loop {
@@ -221,6 +224,10 @@ impl PeerConnPinger {
                 let ping_res_sender = ping_res_sender.clone();
                 let sink = sink.clone();
 
+                if stopped_clone.load(Ordering::Relaxed) != 0 {
+                    return Ok(());
+                }
+
                 while pingpong_tasks.len() > 5 {
                     pingpong_tasks.join_next().await;
                 }
@@ -236,7 +243,9 @@ impl PeerConnPinger {
                     )
                     .await;
 
-                    let _ = ping_res_sender.send(pingpong_once_ret).await;
+                    if let Err(e) = ping_res_sender.send(pingpong_once_ret).await {
+                        tracing::info!(?e, "pingpong task send result error, exit..");
+                    };
                 });
 
                 req_seq += 1;
@@ -267,7 +276,7 @@ impl PeerConnPinger {
             let loss_rate_20: f64 = loss_rate_stats_20.get_latency_us();
             let loss_rate_1: f64 = loss_rate_stats_1.get_latency_us();
 
-            tracing::warn!(
+            tracing::trace!(
                 ?ret,
                 ?self,
                 ?loss_rate_1,
@@ -276,19 +285,22 @@ impl PeerConnPinger {
             );
 
             if (counter > 5 && loss_rate_20 > 0.74) || (counter > 150 && loss_rate_1 > 0.20) {
-                log::warn!(
-                        "pingpong loss rate too high, my_node_id: {}, peer_id: {}, loss_rate_20: {}, loss_rate_1: {}",
-                        my_node_id,
-                        peer_id,
-                        loss_rate_20,
-                        loss_rate_1,
-                    );
+                tracing::warn!(
+                    ?ret,
+                    ?self,
+                    ?loss_rate_1,
+                    ?loss_rate_20,
+                    "pingpong loss rate too high, closing"
+                );
                 break;
             }
 
             self.loss_rate_stats
                 .store((loss_rate_20 * 100.0) as u32, Ordering::Relaxed);
         }
+
+        stopped.store(1, Ordering::Relaxed);
+        ping_res_receiver.close();
     }
 }
 
@@ -430,7 +442,7 @@ impl PeerConn {
         }
     }
 
-    fn start_pingpong(&mut self) {
+    pub fn start_pingpong(&mut self) {
         let mut pingpong = PeerConnPinger::new(
             self.my_node_id,
             self.get_peer_id(),