diff --git a/vnt/src/port_mapping/mod.rs b/vnt/src/port_mapping/mod.rs
index 33354cc..dccb8cd 100644
--- a/vnt/src/port_mapping/mod.rs
+++ b/vnt/src/port_mapping/mod.rs
@@ -66,11 +66,7 @@ pub fn start_port_mapping(
     if vec.is_empty() {
         return Ok(());
     }
-    let runtime = tokio::runtime::Builder::new_multi_thread()
-        .enable_all()
-        .thread_name("portMapping")
-        .build()?;
-    runtime.block_on(start_port_mapping0(vec))?;
+
     let (sender, receiver) = tokio::sync::oneshot::channel::<()>();
     let worker = stop_manager.add_listener("portMapping".into(), move || {
         let _ = sender.send(());
@@ -78,6 +74,11 @@ pub fn start_port_mapping(
     thread::Builder::new()
         .name("portMapping".into())
         .spawn(move || {
+            let runtime = tokio::runtime::Builder::new_multi_thread()
+                .enable_all()
+                .thread_name("portMapping")
+                .build().unwrap();
+            runtime.block_on(start_port_mapping0(vec)).unwrap();
             runtime.block_on(async {
                 let _ = receiver.await;
             });