diff --git a/vnt-jni/java/top/wherewego/vnt/jni/Config.java b/vnt-jni/java/top/wherewego/vnt/jni/Config.java
index 97f28db..4fd3abc 100644
--- a/vnt-jni/java/top/wherewego/vnt/jni/Config.java
+++ b/vnt-jni/java/top/wherewego/vnt/jni/Config.java
@@ -51,7 +51,7 @@ public class Config {
      */
     private String server;
     /**
-     * 服务端地址
+     * dns地址
      */
     private String[] dns;
     /**
@@ -194,6 +194,14 @@ public class Config {
         this.server = server;
     }
 
+    public String[] getDns() {
+        return dns;
+    }
+
+    public void setDns(String[] dns) {
+        this.dns = dns;
+    }
+
     public String[] getStunServer() {
         return stunServer;
     }
diff --git a/vnt-jni/src/config.rs b/vnt-jni/src/config.rs
index 3854215..3afd5fe 100644
--- a/vnt-jni/src/config.rs
+++ b/vnt-jni/src/config.rs
@@ -1,4 +1,3 @@
-use std::net::ToSocketAddrs;
 use std::str::FromStr;
 
 use jni::errors::Error;
@@ -21,7 +20,7 @@ pub fn new_config(env: &mut JNIEnv, config: JObject) -> Result<Config, Error> {
     let password = to_string(env, &config, "password")?;
     let server_address_str = to_string_not_null(env, &config, "server")?;
     let stun_server = to_string_array_not_null(env, &config, "stunServer")?;
-    let dns = to_string_array_not_null(env, &config, "dns")?;
+    let dns = to_string_array(env, &config, "dns")?.unwrap_or_else(|| vec![]);
     let cipher_model = to_string_not_null(env, &config, "cipherModel")?;
     let punch_model = to_string(env, &config, "punchModel")?;
     let mtu = to_integer(env, &config, "mtu")?.map(|v| v as u32);