diff --git a/easytier/src/dns/mod.rs b/easytier/src/dns/mod.rs
index 29eb0710..74b4822d 100644
--- a/easytier/src/dns/mod.rs
+++ b/easytier/src/dns/mod.rs
@@ -1,7 +1,8 @@
+pub mod config;
 mod node;
 mod node_mgr;
-pub mod config;
 mod peer_mgr;
 pub mod server;
+pub mod system;
 mod utils;
 pub mod zone;
diff --git a/easytier/src/instance/dns_server/system_config/darwin.rs b/easytier/src/dns/system/darwin.rs
similarity index 100%
rename from easytier/src/instance/dns_server/system_config/darwin.rs
rename to easytier/src/dns/system/darwin.rs
diff --git a/easytier/src/instance/dns_server/system_config/linux.rs b/easytier/src/dns/system/linux.rs
similarity index 100%
rename from easytier/src/instance/dns_server/system_config/linux.rs
rename to easytier/src/dns/system/linux.rs
diff --git a/easytier/src/instance/dns_server/system_config/mod.rs b/easytier/src/dns/system/mod.rs
similarity index 100%
rename from easytier/src/instance/dns_server/system_config/mod.rs
rename to easytier/src/dns/system/mod.rs
diff --git a/easytier/src/instance/dns_server/system_config/windows.rs b/easytier/src/dns/system/windows.rs
similarity index 100%
rename from easytier/src/instance/dns_server/system_config/windows.rs
rename to easytier/src/dns/system/windows.rs
diff --git a/easytier/src/instance/dns_server/mod.rs b/easytier/src/instance/dns_server/mod.rs
index 1bec8c06..64144c5b 100644
--- a/easytier/src/instance/dns_server/mod.rs
+++ b/easytier/src/instance/dns_server/mod.rs
@@ -10,11 +10,9 @@ pub mod client_instance;
 pub mod runner;
 #[cfg(feature = "magic-dns")]
 pub mod server_instance;
-#[cfg(feature = "magic-dns")]
-pub mod system_config;
 
 #[cfg(all(test, feature = "tun", feature = "magic-dns"))]
-mod tests;
+pub mod tests;
 
 pub static MAGIC_DNS_INSTANCE_ADDR: &str = "tcp://127.0.0.1:49813";
 pub static MAGIC_DNS_FAKE_IP: &str = "100.100.100.101";
diff --git a/easytier/src/instance/dns_server/server_instance.rs b/easytier/src/instance/dns_server/server_instance.rs
index 2d3129f1..9699d0bc 100644
--- a/easytier/src/instance/dns_server/server_instance.rs
+++ b/easytier/src/instance/dns_server/server_instance.rs
@@ -9,9 +9,9 @@
 use super::{
     config::{GeneralConfigBuilder, RunConfigBuilder},
     server::Server,
-    system_config::{OSConfig, SystemConfig},
     MAGIC_DNS_INSTANCE_ADDR,
 };
+use crate::dns::system::{OSConfig, SystemConfig};
 use crate::{
     common::{
         ifcfg::{IfConfiger, IfConfiguerTrait},
@@ -495,14 +495,14 @@ fn get_system_config(
 ) -> Result<Option<Box<dyn SystemConfig>>, anyhow::Error> {
     #[cfg(target_os = "windows")]
     {
-        use super::system_config::windows::WindowsDNSManager;
+        use crate::dns::system::windows::WindowsDNSManager;
         let tun_name = _tun_name.ok_or_else(|| anyhow::anyhow!("No tun name"))?;
         return Ok(Some(Box::new(WindowsDNSManager::new(tun_name)?)));
     }
 
     #[cfg(all(target_os = "macos", not(feature = "macos-ne")))]
     {
-        use super::system_config::darwin::DarwinConfigurator;
+        use crate::dns::system_config::darwin::DarwinConfigurator;
         return Ok(Some(Box::new(DarwinConfigurator::new())));
     }