diff --git a/Tun/Punchnet/Actors/SDLContextActor.swift b/Tun/Punchnet/Actors/SDLContextActor.swift
index 890f8fd..8c32a6a 100644
--- a/Tun/Punchnet/Actors/SDLContextActor.swift
+++ b/Tun/Punchnet/Actors/SDLContextActor.swift
@@ -453,7 +453,9 @@ actor SDLContextActor {
     private func startStunRequestTask(welcome: SDLWelcome) async {
         await self.ipv6AssistClient?.stop()
         self.ipv6AssistClient = SDLIPV6AssistClient(assistServerInfo: welcome.ipv6Assist)
+        await self.ipv6AssistClient?.start()
         
+        SDLLogger.log("[SDLContext] v6 assist client: \(self.ipv6AssistClient)")
         // 通过 welcome信息拿到当前可用使用的ipv6地址
         // 处理心跳逻辑
         self.stunRequestTask = Task.detached {
@@ -463,11 +465,12 @@ actor SDLContextActor {
             for await _ in timerStream.stream {
                 let probeReply = try? await self.ipv6AssistClient?.probe(requestTimeout: .seconds(3))
                 
-                if let v6Info = probeReply.v6Info {
-                    let v6Address = SDLUtil.ipv6DataToString(v6Info.v6)
+                SDLLogger.log("[SDLContext] probe ipv6 address: \(probeReply)")
+                if let v6Info = probeReply?.v6Info, let v6Address = SDLUtil.ipv6DataToString(v6Info.v6) {
                     SDLLogger.log("[SDLContext] probe ipv6 address: \(v6Address)")
+                } else {
+                    SDLLogger.log("[SDLContext] probe ipv6 address: empty")
                 }
-                
                 await self.sendStunRequest(probeReply: probeReply)
             }
             
@@ -979,10 +982,10 @@ extension SDLContextActor {
             let nePacket = NEPacket(data: ipPacketData, protocolFamily: 2)
             self.provider.packetFlow.writePacketObjects([nePacket])
         case .cloudDNS(let name, let ipPacketData):
-            SDLLogger.log("[SDLContext] get cloud dns request: \(name)")
+            //SDLLogger.log("[SDLContext] get cloud dns request: \(name)")
             await self.dnsClient?.forward(ipPacketData: ipPacketData)
         case .localDNS(let name, let payload, let tracker):
-            SDLLogger.log("[SDLContext] get local dns request: \(name)")
+            //SDLLogger.log("[SDLContext] get local dns request: \(name)")
             await self.dnsLocalClient?.query(tracker: tracker, dnsPayload: payload)
         case .forwardToNextHop(let ip, let type, let data, let kind):
             await self.forwardPacketToNextHop(ip: ip, type: type, data: data, kind: kind)