diff --git a/easytier/src/dns/system/darwin.rs b/easytier/src/dns/system/darwin.rs
index 028c29a5..0c7a1d96 100644
--- a/easytier/src/dns/system/darwin.rs
+++ b/easytier/src/dns/system/darwin.rs
@@ -6,13 +6,13 @@ use std::{
     path::Path,
 };
 
-use super::{OSConfig, SystemConfig};
+use super::{OSConfig, SystemConfigurator};
 
 const MAC_RESOLVER_FILE_HEADER: &str = "# Added by easytier\n";
 const ETC_RESOLVER: &str = "/etc/resolver";
 const ETC_RESOLV_CONF: &str = "/etc/resolv.conf";
 
-#[derive(Default)]
+#[derive(Clone, Default)]
 pub struct DarwinConfigurator {}
 impl DarwinConfigurator {
     pub fn new() -> Self {
@@ -104,12 +104,12 @@ impl DarwinConfigurator {
     }
 }
 
-impl SystemConfig for DarwinConfigurator {
+impl SystemConfigurator for DarwinConfigurator {
     fn set_dns(&self, cfg: &OSConfig) -> io::Result<()> {
         self.do_set_dns(cfg)
     }
 
-    fn close(&self) -> io::Result<()> {
+    fn clean(&self) -> io::Result<()> {
         self.do_close()
     }
 }
diff --git a/easytier/src/dns/system/mod.rs b/easytier/src/dns/system/mod.rs
index 388ea3e8..6ef8b622 100644
--- a/easytier/src/dns/system/mod.rs
+++ b/easytier/src/dns/system/mod.rs
@@ -14,7 +14,7 @@ pub struct OSConfig {
     pub match_domains: Vec<String>,
 }
 
-pub trait SystemConfig: Send + Sync {
+pub trait SystemConfigurator: Send + Sync + Clone {
     fn set_dns(&self, cfg: &OSConfig) -> std::io::Result<()>;
-    fn close(&self) -> std::io::Result<()>;
+    fn clean(&self) -> std::io::Result<()>;
 }
diff --git a/easytier/src/dns/system/windows.rs b/easytier/src/dns/system/windows.rs
index 94f014d4..66d91e4a 100644
--- a/easytier/src/dns/system/windows.rs
+++ b/easytier/src/dns/system/windows.rs
@@ -6,7 +6,7 @@ use winreg::RegKey;
 
 use crate::common::ifcfg::RegistryManager;
 
-use super::{OSConfig, SystemConfig};
+use super::{OSConfig, SystemConfigurator};
 
 pub fn is_windows_10_or_better() -> io::Result<bool> {
     let hklm = winreg::enums::HKEY_LOCAL_MACHINE;
@@ -19,6 +19,7 @@ pub fn is_windows_10_or_better() -> io::Result<bool> {
 }
 
 // 假设 interface_guid 是你的网络接口 GUID
+#[derive(Clone)]
 pub struct InterfaceControl {
     interface_guid: String,
 }
@@ -125,6 +126,7 @@ impl InterfaceControl {
     }
 }
 
+#[derive(Clone)]
 pub struct WindowsDNSManager {
     tun_dev_name: String,
     interface_control: InterfaceControl,
@@ -146,7 +148,7 @@ impl WindowsDNSManager {
     }
 }
 
-impl SystemConfig for WindowsDNSManager {
+impl SystemConfigurator for WindowsDNSManager {
     fn set_dns(&self, cfg: &OSConfig) -> io::Result<()> {
         self.set_primary_dns(
             &cfg.nameservers
@@ -158,7 +160,7 @@ impl SystemConfig for WindowsDNSManager {
         Ok(())
     }
 
-    fn close(&self) -> io::Result<()> {
+    fn clean(&self) -> io::Result<()> {
         Ok(())
     }
 }
diff --git a/easytier/src/instance/dns_server/server_instance.rs b/easytier/src/instance/dns_server/server_instance.rs
index 9699d0bc..18b77732 100644
--- a/easytier/src/instance/dns_server/server_instance.rs
+++ b/easytier/src/instance/dns_server/server_instance.rs
@@ -11,7 +11,7 @@ use super::{
     server::Server,
     MAGIC_DNS_INSTANCE_ADDR,
 };
-use crate::dns::system::{OSConfig, SystemConfig};
+use crate::dns::system::{OSConfig, SystemConfigurator};
 use crate::{
     common::{
         ifcfg::{IfConfiger, IfConfiguerTrait},
@@ -69,7 +69,7 @@ pub(super) struct MagicDnsServerInstanceData {
     // zone -> (tunnel remote addr -> route)
     route_infos: DashMap<String, MultiMap<url::Url, Route>>,
 
-    system_config: Option<Box<dyn SystemConfig>>,
+    system_config: Option<Box<dyn SystemConfigurator>>,
 }
 
 impl MagicDnsServerInstanceData {
@@ -492,7 +492,7 @@ pub struct MagicDnsServerInstance {
 
 fn get_system_config(
     _tun_name: Option<&str>,
-) -> Result<Option<Box<dyn SystemConfig>>, anyhow::Error> {
+) -> Result<Option<Box<dyn SystemConfigurator>>, anyhow::Error> {
     #[cfg(target_os = "windows")]
     {
         use crate::dns::system::windows::WindowsDNSManager;
@@ -583,7 +583,7 @@ impl MagicDnsServerInstance {
 
     pub async fn clean_env(&self) {
         if let Some(configer) = &self.data.system_config {
-            let ret = configer.close();
+            let ret = configer.clean();
             if let Err(e) = ret {
                 tracing::error!("Failed to close system config: {:?}", e);
             }