diff --git a/Tun/Punchnet/Actors/SDLContextActor.swift b/Tun/Punchnet/Actors/SDLContextActor.swift
index b06d743..b319eda 100644
--- a/Tun/Punchnet/Actors/SDLContextActor.swift
+++ b/Tun/Punchnet/Actors/SDLContextActor.swift
@@ -48,6 +48,7 @@ actor SDLContextActor {
     private var udpHole: SDLUDPHole?
     private var udpHoleWorkers: [Task<Void, Never>]?
     private var udpHoleLocalAddress: SocketAddress?
+    
     private var udpHoleV6: SDLUDPHoleV6?
     private var udpHoleV6Workers: [Task<Void, Never>]?
     private var udpHoleV6LocalAddress: SocketAddress?
@@ -347,22 +348,22 @@ actor SDLContextActor {
     private func startUDPHoleV6() async throws -> SDLUDPHoleV6 {
         self.udpHoleV6Workers?.forEach {$0.cancel()}
         self.udpHoleV6Workers = nil
-
+        
         // 启动udp服务器
         let udpHoleV6 = try SDLUDPHoleV6()
         let localAddress = try udpHoleV6.start()
         SDLLogger.log("[SDLContext] udpHoleV6 started, on address: \(localAddress)")
-
+        
         // 处理消息流
         let messageStream = udpHoleV6.messageStream
         let messageTask = Task.detached {
             await self.consumeUDPHoleMessages(stream: messageStream, localAddress: localAddress, source: .v6)
         }
-
+        
         self.udpHoleV6 = udpHoleV6
         self.udpHoleV6LocalAddress = localAddress
         self.udpHoleV6Workers = [messageTask]
-
+        
         return udpHoleV6
     }
 
@@ -392,16 +393,12 @@ actor SDLContextActor {
         self.quicClient?.stop()
         self.quicClient = nil
         
-        if let dnsClient = self.dnsClient {
-            await dnsClient.stop()
-        }
+        await self.dnsClient?.stop()
         self.dnsWorker?.cancel()
         self.dnsWorker = nil
         self.dnsClient = nil
         
-        if let dnsLocalClient = self.dnsLocalClient {
-            await dnsLocalClient.stop()
-        }
+        await self.dnsLocalClient?.stop()
         self.dnsLocalWorker?.cancel()
         self.dnsLocalWorker = nil
         self.dnsLocalClient = nil
@@ -424,8 +421,7 @@ actor SDLContextActor {
         self.dataCipher = nil
     }
 
-    private func publishTunnelEvent(code: Int? = nil,
-                                    message: String) {
+    private func publishTunnelEvent(code: Int? = nil, message: String) {
         SDLTunnelAppNotifier.shared.publish(code: code, message: message)
     }
     
@@ -849,6 +845,11 @@ extension SDLContextActor {
     
     private func handleHoleControlMessage(_ message: SDLHoleControlMessage, localAddress: SocketAddress, remoteAddress: SocketAddress, source: UDPHoleKind) async {
         switch message {
+        case .stunReply(_):
+            guard source == .v4 else {
+                return
+            }
+            SDLLogger.log("[SDLContext] get a stunReply", for: .debug)
         case .stunProbeReply(let probeReply):
             guard source == .v4 else {
                 return
@@ -858,9 +859,6 @@ extension SDLContextActor {
             try? self.handleRegister(remoteAddress: remoteAddress, register: register)
         case .registerAck(let registerAck):
             self.handleRegisterAck(remoteAddress: remoteAddress, registerAck: registerAck)
-        case .stunReply(_):
-            //SDLLogger.shared.log("[SDLContext] get a stunReply: \(stunReply)")
-            ()
         }
     }
     
@@ -932,6 +930,7 @@ extension SDLContextActor {
             ()
         }
     }
+    
 }
 
 private extension UInt32 {