fix ipv6 panic

src/network/ipv6.rs

@@ -39,7 +39,13 @@ pub async fn run_ipv6(edge: &'static Node, mut v6_may_change: Receiver<bool>) {
         println!("ipv6: {}:{}", addr, port);
         */
 
-        let socket = Arc::new(Socket::build_v6(ipv6, 0).await.unwrap());
+        let Ok(v6_sock) = Socket::build_v6(ipv6, 0).await else{
+            v6_may_change.recv().await;
+            continue;
+        };
+        println!("sock ipv6: {}", ipv6);
+        let socket = Arc::new(v6_sock);
+
         let port = socket.get_local_port();
         let socket_clone = socket.clone();
         let cancel = CancellationToken::new();