diff --git a/Sources/sdlan/LayerPacket.swift b/Sources/sdlan/LayerPacket.swift
index 07860c7..3237acd 100644
--- a/Sources/sdlan/LayerPacket.swift
+++ b/Sources/sdlan/LayerPacket.swift
@@ -69,19 +69,6 @@ struct LayerPacket {
             throw LayerPacketError.invalidLength
         }
         
-        /*
-        let idx = layerData.count - 4
-        let playload = layerData.subdata(in: 0..<idx)
-        let crc = layerData.subdata(in: idx..<layerData.count)
-        
-        guard Self.crc32(data: playload) == UInt32(data: crc) else {
-            
-            NSLog("play crc32: \(Self.crc32(data: playload)), get: \(UInt32(data: crc))")
-            
-            throw LayerPacketError.crcError
-        }
-         */
-        
         self.dstMac = Data(playload[0..<6])
         self.srcMac = Data(playload[6..<12])
         guard let type = PacketType(rawValue: UInt16(bytes: (playload[12], playload[13]))) else {
@@ -99,10 +86,6 @@ struct LayerPacket {
         packet.append(self.type.rawValue.data())
         packet.append(self.data)
         
-        // 计算crc32的值
-        //let crc32 = data.crc32()
-        //packet.append(Data(uint32: Self.crc32(data: packet)))
-        
         return packet
     }
     
diff --git a/Sources/sdlan/NetworkInterface.swift b/Sources/sdlan/NetworkInterface.swift
index b6ac7fa..e54ff91 100644
--- a/Sources/sdlan/NetworkInterface.swift
+++ b/Sources/sdlan/NetworkInterface.swift
@@ -44,6 +44,7 @@ struct NetworkInterfaceManager {
                         if (getnameinfo(&addr, socklen_t(addr.sa_len), &hostname, socklen_t(hostname.count),
                                         nil, socklen_t(0), NI_NUMERICHOST) == 0) {
                             let address = String(cString: hostname)
+                            
                             let name = ptr!.pointee.ifa_name!
                             let ifname = String(cString: name)
                             
diff --git a/Sources/sdlan/PacketTunnelProvider.swift b/Sources/sdlan/PacketTunnelProvider.swift
deleted file mode 100644
index dd82fde..0000000
--- a/Sources/sdlan/PacketTunnelProvider.swift
+++ /dev/null
@@ -1,81 +0,0 @@
-//
-//  PacketTunnelProvider.swift
-//  Tun
-//
-//  Created by 安礼成 on 2024/1/17.
-//
-
-import NetworkExtension
-
-class PacketTunnelProvider: NEPacketTunnelProvider {
-    var context: SDLContext?
-    
-    override func startTunnel(options: [String : NSObject]?, completionHandler: @escaping (Error?) -> Void) {
-        // host: "192.168.0.101", port: 1265
-        guard let options else {
-            return
-        }
-        
-        let token = options["token"] as! String
-        //let version = options["version"] as! Int
-        let installed_channel = options["installed_channel"] as! String
-        
-        let superIp = options["super_ip"] as! String
-        Task {
-            SDLLogger.logLevel = .debug
-            do {
-                self.context = try SDLContext(provider: self, config: .init(
-                    version: 1,
-                    installedChannel: installed_channel,
-                    //superHost: "118.178.229.213",
-                    superHost: superIp,
-                    superPort: 18083,
-                    stunServers: [.init(host: superIp, ports: [1265, 1266]), .init(host: "118.178.229.213", ports: [1265, 1266])],
-                    clientId: SDLContext.getUUID(),
-                    token: ""
-                    //token: token
-                ))
-                
-                try await self.context?.start()
-                completionHandler(nil)
-            } catch let err {
-                NSLog("SDLContext start get error: \(err)")
-                
-                completionHandler(err)
-            }
-        }
-    }
-    
-    override func stopTunnel(with reason: NEProviderStopReason, completionHandler: @escaping () -> Void) {
-        // Add code here to start the process of stopping the tunnel.
-        completionHandler()
-    }
-    
-    override func handleAppMessage(_ messageData: Data, completionHandler: ((Data?) -> Void)?) {
-        // Add code here to handle the message.
-        if let handler = completionHandler {
-            handler(messageData)
-        }
-    }
-    
-    override func sleep(completionHandler: @escaping () -> Void) {
-        // Add code here to get ready to sleep.
-        completionHandler()
-    }
-    
-    override func wake() {
-        // Add code here to wake up.
-    }
-    
-}
-
-// 获取物理网卡ip地址
-extension PacketTunnelProvider {
-    
-    public static var viaInterface: NetworkInterface? = {
-        let interfaces = NetworkInterfaceManager.getInterfaces()
-        
-        return interfaces.first {$0.name == "en0"}
-    }()
-    
-}
diff --git a/Sources/sdlan/SDLContext.swift b/Sources/sdlan/SDLContext.swift
index 685d22f..7871c71 100644
--- a/Sources/sdlan/SDLContext.swift
+++ b/Sources/sdlan/SDLContext.swift
@@ -101,7 +101,7 @@ class SDLContext {
     // 数据包读取任务
     private var readTask: Task<(), Never>?
     
-    let provider: PacketTunnelProvider
+    let provider: NEPacketTunnelProvider
     
     private var sessionManager: SessionManager
     private var holerManager: HolerManager
@@ -124,7 +124,8 @@ class SDLContext {
     private var flowTracer = SDLFlowTracerActor()
     private var flowTracerCancel: AnyCancellable?
     
-    init(provider: PacketTunnelProvider, config: Configuration) throws {
+    init(provider: NEPacketTunnelProvider, config: Configuration) throws {
+        
         self.config = config
         self.rsaCipher = try RSACipher(keySize: 1024)