diff --git a/switch-desktop/src/command/server.rs b/switch-desktop/src/command/server.rs
index 530e5bf..0be90a0 100644
--- a/switch-desktop/src/command/server.rs
+++ b/switch-desktop/src/command/server.rs
@@ -1,6 +1,5 @@
 use std::io;
 use std::net::{Ipv4Addr, SocketAddr, SocketAddrV4, UdpSocket};
-
 use std::sync::Arc;
 
 use console::style;
@@ -54,6 +53,7 @@ impl CommandServer {
         }
     }
 }
+
 fn command(cmd: &str, switch: &Switch) -> io::Result<String> {
     let mut out_str = String::new();
     match cmd {
@@ -129,6 +129,13 @@ fn command(cmd: &str, switch: &Switch) -> io::Result<String> {
                 let str = format!("Delay of relay server :{}ms\n", style(server_rt).green());
                 out_str.push_str(&str);
             }
+            if let Some(nat_info) = switch.nat_info() {
+                let str = format!(
+                    "NAT type :{}",
+                    style(format!("{:?}", nat_info.nat_type)).green()
+                );
+                out_str.push_str(&str);
+            }
         }
         "help" | "h" => {
             let str = format!("Options: \n");
diff --git a/switch-desktop/src/main.rs b/switch-desktop/src/main.rs
index 6d2b828..b4b6d82 100644
--- a/switch-desktop/src/main.rs
+++ b/switch-desktop/src/main.rs
@@ -1,11 +1,12 @@
 use std::io;
+use std::net::ToSocketAddrs;
 use std::path::PathBuf;
 
 use clap::Parser;
 use console::style;
 
-use switch::*;
 use switch::handle::{PeerDeviceStatus, RouteType};
+use switch::*;
 
 #[cfg(windows)]
 mod command;
@@ -16,9 +17,9 @@ mod windows;
 
 #[derive(Parser, Debug)]
 #[command(
-author = "Lu Beilin",
-version,
-about = "一个虚拟网络工具,启动后会获取一个ip,相同token下的设备之间可以用ip直接通信"
+    author = "Lu Beilin",
+    version,
+    about = "一个虚拟网络工具,启动后会获取一个ip,相同token下的设备之间可以用ip直接通信"
 )]
 struct Args {
     /// 32位字符
@@ -30,6 +31,7 @@ struct Args {
     #[arg(long)]
     token: String,
     /// 给设备一个名称，为空时默认用系统版本信息
+    /// Give the device a name. If it is blank, the system version information will be used by default
     #[arg(long)]
     name: Option<String>,
 }
@@ -120,7 +122,10 @@ fn main() {
     let _ = log_init();
     let args = Args::parse();
     if sudo::RunningAs::Root != sudo::check() {
-        println!("{}", style("需要使用root权限执行...").red());
+        println!(
+            "{}",
+            style("需要使用root权限执行(Need to execute with root permission)...").red()
+        );
         sudo::escalate_if_needed().unwrap();
     }
     println!("{}", style("starting...").green());
@@ -129,7 +134,41 @@ fn main() {
 
 pub fn start(token: String, name: Option<String>) {
     let mac_address = mac_address::get_mac_address().unwrap().unwrap().to_string();
-    let switch = match Config::new(token, mac_address, name, || {}) {
+    let server_address = "nat1.wherewego.top:29875"
+        .to_socket_addrs()
+        .unwrap()
+        .next()
+        .unwrap();
+    let nat_test_server = vec![
+        "nat1.wherewego.top:35061"
+            .to_socket_addrs()
+            .unwrap()
+            .next()
+            .unwrap(),
+        "nat1.wherewego.top:35062"
+            .to_socket_addrs()
+            .unwrap()
+            .next()
+            .unwrap(),
+        "nat2.wherewego.top:35061"
+            .to_socket_addrs()
+            .unwrap()
+            .next()
+            .unwrap(),
+        "nat2.wherewego.top:35062"
+            .to_socket_addrs()
+            .unwrap()
+            .next()
+            .unwrap(),
+    ];
+    let switch = match Config::new(
+        token,
+        mac_address,
+        name,
+        server_address,
+        nat_test_server,
+        || {},
+    ) {
         Ok(config) => match Switch::start(config) {
             Ok(switch) => switch,
             Err(e) => {
@@ -248,6 +287,12 @@ fn command(cmd: &str, switch: &Switch) -> Result<(), ()> {
             if server_rt >= 0 {
                 println!("Delay of relay server :{}ms", style(server_rt).green());
             }
+            if let Some(nat_info) = switch.nat_info() {
+                println!(
+                    "NAT type :{}",
+                    style(format!("{:?}", nat_info.nat_type)).green()
+                );
+            }
         }
         "help" | "h" => {
             println!("Options: ");
diff --git a/switch-desktop/src/windows/mod.rs b/switch-desktop/src/windows/mod.rs
index 1df5092..910de42 100644
--- a/switch-desktop/src/windows/mod.rs
+++ b/switch-desktop/src/windows/mod.rs
@@ -1,15 +1,16 @@
-use std::{io, thread};
 use std::ffi::OsString;
 use std::path::PathBuf;
 use std::time::Duration;
+use std::{io, thread};
 
 use clap::Parser;
 use console::style;
-use windows_service::Error;
+
 use windows_service::service::{
     ServiceAccess, ServiceErrorControl, ServiceInfo, ServiceStartType, ServiceState, ServiceType,
 };
 use windows_service::service_manager::{ServiceManager, ServiceManagerAccess};
+use windows_service::Error;
 
 use crate::config;
 
@@ -18,9 +19,9 @@ mod windows_admin_check;
 
 #[derive(Parser, Debug)]
 #[command(
-author = "Lu Beilin",
-version,
-about = "一个虚拟网络工具,启动后会获取一个ip,相同token下的设备之间可以用ip直接通信"
+    author = "Lu Beilin",
+    version,
+    about = "一个虚拟网络工具,启动后会获取一个ip,相同token下的设备之间可以用ip直接通信"
 )]
 struct Args {
     /// 32位字符
@@ -32,25 +33,32 @@ struct Args {
     #[arg(long)]
     token: Option<String>,
     /// 给设备一个名称，为空时默认用系统版本信息
+    /// Give the device a name. If it is blank, the system version information will be used by default
     #[arg(long)]
     name: Option<String>,
     /// 安装服务，安装后可以后台运行，需要指定安装路径
+    /// The installation service can run in the background after installation, and the installation path needs to be specified
     #[arg(long)]
     install: Option<String>,
     /// 卸载服务
+    /// Uninstall service
     #[arg(long)]
     uninstall: bool,
     /// 启动，启动时可以附加参数 --token，如果没有token，则会读取配置文件中上一次使用的token
     /// 安装服务后，会以服务的方式在后台启动，此时可以关闭命令行窗口
+    /// When starting, you can attach the parameter -- token. If there is no token, the last token used in the configuration file will be read. After installing the service, it will be started in the background as a service. At this time, you can close the command line window
     #[arg(long)]
     start: bool,
     #[arg(long)]
     /// 停止，安装服务后，使用 --stop停止服务
+    /// Stop. After installing the service, use -- stop to stop the service
     stop: bool,
     /// 启动服务后，使用 --list 查看设备列表
+    /// After starting the service, use -- list to view the device list
     #[arg(long)]
     list: bool,
     /// 启动服务后，使用 --status 查看设备状态
+    /// After starting the service, use -- status to view the device status
     #[arg(long)]
     status: bool,
 }
@@ -85,7 +93,10 @@ pub fn main0() {
         return;
     }
     if !windows_admin_check::is_app_elevated() {
-        println!("{}", style("请使用管理员权限运行").red());
+        println!(
+            "{}",
+            style("请使用管理员权限运行(Please run with administrator privileges)").red()
+        );
         return;
     }
     if let Some(path) = args.install {
@@ -94,23 +105,23 @@ pub fn main0() {
             std::fs::create_dir_all(&path).unwrap();
         }
         if !path.is_dir() {
-            println!("参数必须为文件目录");
+            println!("参数必须为文件目录(Parameter must be a file directory)");
         } else {
             if let Err(e) = install(path) {
                 log::error!("{:?}", e);
             } else {
-                println!("{}", style("安装成功").green())
+                println!("{}", style("安装成功(Installation succeeded)").green())
             }
         }
     } else if args.uninstall {
         if let Err(e) = uninstall() {
             log::error!("{:?}", e);
         } else {
-            println!("{}", style("卸载成功").green())
+            println!("{}", style("卸载成功(Uninstall succeeded)").green())
         }
     } else if args.start {
         if args.token.is_none() {
-            println!("{}", style("需要参数 --token").red());
+            println!("{}", style("需要参数(require parameters) --token").red());
         } else {
             let token = args.token.clone().unwrap();
             match service_state() {
@@ -120,18 +131,18 @@ pub fn main0() {
                             token.clone(),
                             args.name.clone(),
                         ))
-                            .unwrap();
+                        .unwrap();
                         match start() {
                             Ok(_) => {
                                 //需要检查启动状态
-                                println!("{}", style("启动成功").green())
+                                println!("{}", style("启动成功(Start successfully)").green())
                             }
                             Err(e) => {
                                 log::error!("{:?}", e);
                             }
                         }
                     } else {
-                        println!("服务未停止");
+                        println!("服务未停止(Service not stopped)");
                     }
                 }
                 Err(e) => {
@@ -142,7 +153,7 @@ pub fn main0() {
                                     //指定的服务未安装。
                                     println!(
                                         "{}",
-                                        style("服务未安装，在当前进程启动").red()
+                                        style("服务未安装，在当前进程启动(The service is not installed and started in the current process)").red()
                                     );
                                     crate::start(token, args.name);
                                     return;
@@ -158,20 +169,23 @@ pub fn main0() {
     } else if args.stop {
         match stop() {
             Ok(_) => {
-                println!("{}", style("停止成功").green())
+                println!("{}", style("停止成功(Stopped successfully)").green())
             }
             Err(e) => {
                 log::error!("{:?}", e);
             }
         }
     } else {
-        println!("使用参数 -h 查看帮助")
+        println!("使用参数 -h 查看帮助(Use the parameter - h to view help)")
     }
     pause();
 }
 
 fn pause() {
-    println!("{}", style("按任意键退出...").green());
+    println!(
+        "{}",
+        style("按任意键退出(Press any key to exit)...").green()
+    );
     use console::Term;
     let term = Term::stdout();
     let _ = term.read_char().unwrap();
diff --git a/switch-desktop/src/windows/service.rs b/switch-desktop/src/windows/service.rs
index bdb12d1..87e0432 100644
--- a/switch-desktop/src/windows/service.rs
+++ b/switch-desktop/src/windows/service.rs
@@ -6,14 +6,13 @@ use std::sync::Arc;
 use std::thread;
 use std::time::Duration;
 
+use switch::{Config, Switch};
 use windows_service::service::{
     ServiceControl, ServiceControlAccept, ServiceExitCode, ServiceState, ServiceStatus,
 };
 use windows_service::service_control_handler::ServiceControlHandlerResult;
 use windows_service::{define_windows_service, service_control_handler, service_dispatcher};
 
-use switch::{Config, Switch};
-
 use crate::windows::config::read_config;
 
 define_windows_service!(ffi_service_main, switch_service_main);
@@ -63,9 +62,43 @@ fn service_main() -> windows_service::Result<()> {
     if let Some(config) = read_config() {
         let mac_address = mac_address::get_mac_address().unwrap().unwrap().to_string();
         let un_parker = parker.unparker().clone();
-        match Config::new(config.token, mac_address, config.name, move || {
-            un_parker.unpark();
-        }) {
+        let server_address = "nat1.wherewego.top:29875"
+            .to_socket_addrs()
+            .unwrap()
+            .next()
+            .unwrap();
+        let nat_test_server = vec![
+            "nat1.wherewego.top:35061"
+                .to_socket_addrs()
+                .unwrap()
+                .next()
+                .unwrap(),
+            "nat1.wherewego.top:35062"
+                .to_socket_addrs()
+                .unwrap()
+                .next()
+                .unwrap(),
+            "nat2.wherewego.top:35061"
+                .to_socket_addrs()
+                .unwrap()
+                .next()
+                .unwrap(),
+            "nat2.wherewego.top:35062"
+                .to_socket_addrs()
+                .unwrap()
+                .next()
+                .unwrap(),
+        ];
+        match Config::new(
+            config.token,
+            mac_address,
+            config.name,
+            server_address,
+            nat_test_server,
+            move || {
+                un_parker.unpark();
+            },
+        ) {
             Ok(config) => match Switch::start(config) {
                 Ok(switch) => {
                     log::info!("switch-service服务启动");
diff --git a/switch-jni/src/lib.rs b/switch-jni/src/lib.rs
index e069301..a43a9a4 100644
--- a/switch-jni/src/lib.rs
+++ b/switch-jni/src/lib.rs
@@ -1,4 +1,4 @@
-use std::net::{IpAddr, Ipv4Addr};
+use std::net::{IpAddr, Ipv4Addr, ToSocketAddrs};
 
 use jni::errors::Error;
 use jni::objects::{JClass, JObject, JString, JValue};
@@ -46,7 +46,41 @@ fn start(env: &JNIEnv, config: JObject) -> Result<Option<Switch>, Error> {
     let token = to_string_not_null(&env, config, "token")?;
     let mac_address = to_string_not_null(&env, config, "macAddress")?;
     let name = to_string(&env, config, "name")?;
-    let config = match Config::new(token, mac_address, name, || {}) {
+    let server_address = "nat1.wherewego.top:29875"
+        .to_socket_addrs()
+        .unwrap()
+        .next()
+        .unwrap();
+    let nat_test_server = vec![
+        "nat1.wherewego.top:35061"
+            .to_socket_addrs()
+            .unwrap()
+            .next()
+            .unwrap(),
+        "nat1.wherewego.top:35062"
+            .to_socket_addrs()
+            .unwrap()
+            .next()
+            .unwrap(),
+        "nat2.wherewego.top:35061"
+            .to_socket_addrs()
+            .unwrap()
+            .next()
+            .unwrap(),
+        "nat2.wherewego.top:35062"
+            .to_socket_addrs()
+            .unwrap()
+            .next()
+            .unwrap(),
+    ];
+    let config = match Config::new(
+        token,
+        mac_address,
+        name,
+        server_address,
+        nat_test_server,
+        || {},
+    ) {
         Ok(config) => config,
         Err(e) => {
             env.throw_new(
@@ -187,7 +221,7 @@ fn device_list(env: &JNIEnv, device_list: Vec<PeerDeviceInfo>) -> Result<jobject
     for peer_info in device_list {
         let virtual_ip: u32 = peer_info.virtual_ip.into();
         let name = peer_info.name;
-        let status:u8 = peer_info.status.into();
+        let status: u8 = peer_info.status.into();
         let info = env.new_object(
             "org/switches/jni/PeerDeviceInfo",
             "(BLjava/lang/String;J)V",
diff --git a/switch/src/handle/mod.rs b/switch/src/handle/mod.rs
index 5e6e2ba..5fef740 100644
--- a/switch/src/handle/mod.rs
+++ b/switch/src/handle/mod.rs
@@ -31,6 +31,7 @@ lazy_static! {
         .time_to_idle(Duration::from_secs(60*5)).build();
     /// 当前设备的nat信息
     pub static ref NAT_INFO:Mutex<Option<NatInfo>> = const_mutex(None);
+    static ref NAT_TEST_ADDRESS:Mutex<Vec<SocketAddr>> = const_mutex(Vec::new());
 }
 #[derive(Clone, Debug, Eq, PartialEq)]
 pub struct PeerDeviceInfo {
@@ -96,10 +97,10 @@ impl Into<u8> for ConnectStatus {
 
 #[derive(Clone, Debug)]
 pub struct NatInfo {
-    public_ips: Vec<u32>,
-    public_port: u16,
-    public_port_range: u16,
-    nat_type: NatType,
+    pub public_ips: Vec<u32>,
+    pub public_port: u16,
+    pub public_port_range: u16,
+    pub nat_type: NatType,
 }
 
 impl NatInfo {
@@ -118,9 +119,14 @@ impl NatInfo {
     }
 }
 
+pub fn init_nat_test_addr(addrs: Vec<SocketAddr>) {
+    NAT_TEST_ADDRESS.lock().extend_from_slice(&addrs);
+}
+
 /// 初始化nat信息
 pub fn init_nat_info(public_ip: u32, public_port: u16) {
-    match crate::nat::check::public_ip_list() {
+    let addrs = NAT_TEST_ADDRESS.lock().clone();
+    match crate::nat::check::public_ip_list(&addrs) {
         Ok((nat_type, ips, port_range)) => {
             let mut public_ips = Vec::new();
             public_ips.push(public_ip);
diff --git a/switch/src/handle/punch_handler.rs b/switch/src/handle/punch_handler.rs
index b8a9770..ee362a5 100644
--- a/switch/src/handle/punch_handler.rs
+++ b/switch/src/handle/punch_handler.rs
@@ -132,10 +132,10 @@ fn handle(
                     } else {
                         punch.public_port + punch.public_port_range
                     };
-                    let k = if max_port - min_port +1 > 60 {
+                    let k = if max_port - min_port + 1 > 60 {
                         60
                     } else {
-                        max_port - min_port +1
+                        max_port - min_port + 1
                     };
                     send_f(min_port as u16, max_port as u16, k as usize)?;
                 }
@@ -371,7 +371,7 @@ fn send_punch(udp: &UdpSocket, cur_info: &CurrentDeviceInfo, nat_info: NatInfo)
         let ip = peer_info.virtual_ip;
         //只向ip比自己大的发起打洞，避免双方同时发起打洞浪费流量
         if ip > cur_info.virtual_ip && !DIRECT_ROUTE_TABLE.contains_key(&ip) {
-            log::info!("发起打洞  {:?}, peer_info:{:?}",nat_info,peer_info);
+            log::info!("发起打洞  {:?}, peer_info:{:?}", nat_info, peer_info);
             let bytes = punch_packet(cur_info.virtual_ip, nat_info.clone(), ip)?;
             udp.send_to(&bytes, cur_info.connect_server)?;
         }
diff --git a/switch/src/handle/tun_handler.rs b/switch/src/handle/tun_handler.rs
index 3248503..d3b20a4 100644
--- a/switch/src/handle/tun_handler.rs
+++ b/switch/src/handle/tun_handler.rs
@@ -148,10 +148,10 @@ pub async fn handler_start<F>(
 ) where
     F: FnOnce() + Send + 'static,
 {
-    #[cfg(target_os = "linux")]
-    use std::os::unix::io::AsRawFd;
     #[cfg(target_os = "macos")]
     use std::os::fd::AsRawFd;
+    #[cfg(target_os = "linux")]
+    use std::os::unix::io::AsRawFd;
     let raw_fd = tun_reader.0.as_raw_fd();
     tokio::spawn(async move {
         let _ = status_watch.changed().await;
diff --git a/switch/src/lib.rs b/switch/src/lib.rs
index 5f68f10..69e28b1 100644
--- a/switch/src/lib.rs
+++ b/switch/src/lib.rs
@@ -1,7 +1,7 @@
 use std::io;
-use std::net::{Ipv4Addr, SocketAddr, SocketAddrV4, ToSocketAddrs, UdpSocket};
-use std::sync::Arc;
+use std::net::{Ipv4Addr, SocketAddr, SocketAddrV4, UdpSocket};
 use std::sync::atomic::Ordering;
+use std::sync::Arc;
 use std::time::Duration;
 
 use crossbeam::atomic::AtomicCell;
@@ -11,11 +11,11 @@ use tokio::sync::watch;
 
 use error::*;
 
-use crate::handle::{
-    ApplicationStatus, ConnectStatus, CurrentDeviceInfo, DEVICE_LIST, DIRECT_ROUTE_TABLE, PeerDeviceInfo,
-    Route, RouteType, SERVER_RT,
-};
 use crate::handle::registration_handler::CONNECTION_STATUS;
+use crate::handle::{
+    ApplicationStatus, ConnectStatus, CurrentDeviceInfo, NatInfo, PeerDeviceInfo, Route, RouteType,
+    DEVICE_LIST, DIRECT_ROUTE_TABLE, NAT_INFO, SERVER_RT,
+};
 
 pub mod error;
 pub mod handle;
@@ -29,6 +29,8 @@ pub struct Config<F> {
     pub token: String,
     pub mac_address: String,
     pub name: String,
+    pub server_address: SocketAddr,
+    pub nat_test_server: Vec<SocketAddr>,
     pub abnormal_call: F,
 }
 
@@ -37,10 +39,12 @@ impl<F> Config<F> {
         token: String,
         mac_address: String,
         name: Option<String>,
+        server_address: SocketAddr,
+        nat_test_server: Vec<SocketAddr>,
         abnormal_call: F,
     ) -> Result<Self>
-        where
-            F: FnOnce() + Send + 'static,
+    where
+        F: FnOnce() + Send + 'static,
     {
         if token.is_empty() || token.len() > 64 {
             return Err(Error::Stop("token invalid".to_string()));
@@ -56,6 +60,8 @@ impl<F> Config<F> {
                 token,
                 mac_address,
                 name,
+                server_address,
+                nat_test_server,
                 abnormal_call,
             })
         } else {
@@ -69,6 +75,8 @@ impl<F> Config<F> {
                 token,
                 mac_address,
                 name,
+                server_address,
+                nat_test_server,
                 abnormal_call,
             })
         }
@@ -84,8 +92,8 @@ pub struct Switch {
 
 impl Switch {
     pub fn start<F>(config: Config<F>) -> Result<Self>
-        where
-            F: FnOnce() + Send + 'static,
+    where
+        F: FnOnce() + Send + 'static,
     {
         let runtime = tokio::runtime::Builder::new_multi_thread()
             .enable_all()
@@ -109,6 +117,9 @@ impl Switch {
     pub fn current_device(&self) -> &CurrentDeviceInfo {
         &self.current_device
     }
+    pub fn nat_info(&self) -> Option<NatInfo> {
+        NAT_INFO.lock().clone()
+    }
     pub fn server_rt(&self) -> i64 {
         SERVER_RT.load(Ordering::Relaxed)
     }
@@ -141,11 +152,12 @@ impl Switch {
         return status == ApplicationStatus::Starting;
     }
     pub async fn start_<F>(config: Config<F>) -> Result<Self>
-        where
-            F: FnOnce() + Send + 'static,
+    where
+        F: FnOnce() + Send + 'static,
     {
         // let server_address = "nat1.wherewego.top:29876"
-        let server_address = "nat1.wherewego.top:29875".to_socket_addrs().unwrap().next().unwrap();
+        // let server_address = "nat1.wherewego.top:29875".to_socket_addrs().unwrap().next().unwrap();
+        let server_address = config.server_address;
         let mut port = 101 as u16;
         let udp = loop {
             match UdpSocket::bind(SocketAddr::V4(SocketAddrV4::new(Ipv4Addr::from(0), port))) {
@@ -215,9 +227,10 @@ impl Switch {
                     drop(wait_group1);
                 },
             )
-                .await;
+            .await;
         }
         //初始化nat数据
+        handle::init_nat_test_addr(config.nat_test_server);
         handle::init_nat_info(response.public_ip, response.public_port as u16);
         // tun服务
         let (tun_writer, tun_reader) =
@@ -249,7 +262,7 @@ impl Switch {
                     drop(wait_group1);
                 },
             )
-                .await;
+            .await;
             let udp1 = udp.try_clone()?;
             let wait_group1 = wait_group.clone();
             let status_sender1 = status_sender.clone();
@@ -269,7 +282,7 @@ impl Switch {
                     drop(wait_group1);
                 },
             )
-                .await;
+            .await;
         }
         //打洞处理
         {
@@ -291,7 +304,7 @@ impl Switch {
                     drop(wait_group1);
                 },
             )
-                .await;
+            .await;
             let udp1 = udp.try_clone()?;
             let wait_group1 = wait_group.clone();
             let status_sender1 = status_sender.clone();
@@ -310,7 +323,7 @@ impl Switch {
                     drop(wait_group1);
                 },
             )
-                .await;
+            .await;
             let udp1 = udp.try_clone()?;
             let wait_group1 = wait_group.clone();
             let status_sender1 = status_sender.clone();
@@ -329,7 +342,7 @@ impl Switch {
                     drop(wait_group1);
                 },
             )
-                .await;
+            .await;
         }
         //tun数据处理
         {
@@ -350,7 +363,7 @@ impl Switch {
                     drop(wait_group1);
                 },
             )
-                .await;
+            .await;
         }
         Ok(Switch {
             current_device,
diff --git a/switch/src/nat/check.rs b/switch/src/nat/check.rs
index a3c059a..9fa98be 100644
--- a/switch/src/nat/check.rs
+++ b/switch/src/nat/check.rs
@@ -21,7 +21,7 @@ use crate::proto::message::NatType;
 // }
 
 /// 返回所有公网ip和端口变化范围
-pub fn public_ip_list() -> io::Result<(NatType, Vec<Ipv4Addr>, u16)> {
+pub fn public_ip_list(addrs: &Vec<SocketAddr>) -> io::Result<(NatType, Vec<Ipv4Addr>, u16)> {
     let mut hash_set = HashSet::new();
     let mut max_port_range = 0;
     let mut nat_type = NatType::Cone;
@@ -41,7 +41,7 @@ pub fn public_ip_list() -> io::Result<(NatType, Vec<Ipv4Addr>, u16)> {
                 }
             }
         };
-        let (set, min_port, max_port) = public_ip_list_(&udp)?;
+        let (set, min_port, max_port) = public_ip_list_(&udp, addrs)?;
         drop(udp);
         let port_range = max_port - min_port;
         //有多个ip或者端口有变化，说明是对称nat
@@ -69,19 +69,24 @@ pub fn public_ip_list() -> io::Result<(NatType, Vec<Ipv4Addr>, u16)> {
 /// - 电信4g：对称网络只有一个ip 公网端口比较连续
 /// - 综上：客户端使用小端口，针对对称网络 尝试所有ip 公网端口+-变化量的范围
 /// - 打通概率 移动宽带=电信宽带>联调宽带>电信4g>移动4g>>联调4g
-pub fn public_ip_list_(udp: &UdpSocket) -> io::Result<(HashSet<Ipv4Addr>, u16, u16)> {
+pub fn public_ip_list_(
+    udp: &UdpSocket,
+    addrs: &Vec<SocketAddr>,
+) -> io::Result<(HashSet<Ipv4Addr>, u16, u16)> {
     // println!("local port {:?}", udp.local_addr().unwrap().port());
     udp.set_read_timeout(Some(Duration::from_millis(300)))?;
     let mut buf = [0u8; 128];
-    let _ = udp.send_to(b"NatTest", "nat1.wherewego.top:35061")?;
-    let _ = udp.send_to(b"NatTest", "nat1.wherewego.top:35062")?;
-    let _ = udp.send_to(b"NatTest", "nat2.wherewego.top:35061")?;
-    let _ = udp.send_to(b"NatTest", "nat2.wherewego.top:35062")?;
+    for addr in addrs {
+        let _ = udp.send_to(b"NatTest", addr)?;
+    }
+    // let _ = udp.send_to(b"NatTest", "nat1.wherewego.top:35062")?;
+    // let _ = udp.send_to(b"NatTest", "nat2.wherewego.top:35061")?;
+    // let _ = udp.send_to(b"NatTest", "nat2.wherewego.top:35062")?;
     let mut hash_set = HashSet::new();
     let mut count = 0;
     let mut min_port = 65535;
     let mut max_port = 0;
-    for _ in 0..4 {
+    for _ in 0..addrs.len() {
         if let Ok(len) = udp.recv(&mut buf) {
             if len != 16 || &buf[..10] != &b"NatType213"[..] {
                 continue;
@@ -152,6 +157,19 @@ pub fn nat_test_() -> io::Result<NatType> {
 #[test]
 fn nat_test_run() {
     let udp = UdpSocket::bind("0.0.0.0:101").unwrap();
-    let print = public_ip_list_(&udp).unwrap();
+    use std::net::{IpAddr, Ipv4Addr, SocketAddr, ToSocketAddrs, UdpSocket};
+    let addrs = vec![
+        "nat1.wherewego.top:35062"
+            .to_socket_addrs()
+            .unwrap()
+            .next()
+            .unwrap(),
+        "nat2.wherewego.top:35062"
+            .to_socket_addrs()
+            .unwrap()
+            .next()
+            .unwrap(),
+    ];
+    let print = public_ip_list_(&udp, &addrs).unwrap();
     println!("{:?}", print);
 }
diff --git a/switch/src/tun_device/linux.rs b/switch/src/tun_device/linux.rs
index 1811bf8..d86f553 100644
--- a/switch/src/tun_device/linux.rs
+++ b/switch/src/tun_device/linux.rs
@@ -1,5 +1,5 @@
-use std::net::Ipv4Addr;
 use crate::tun_device::{TunReader, TunWriter};
+use std::net::Ipv4Addr;
 
 pub fn create_tun(
     address: Ipv4Addr,