From c281df146211236bc5d43ac58e9a7bd225ae71fb Mon Sep 17 00:00:00 2001
From: cpu100 <42709228+cpu100@users.noreply.github.com>
Date: Mon, 18 May 2020 03:26:24 +0800
Subject: [PATCH] fix setTUN order

SetTUN should be called before bringing up the device. Order is important, otherwise, an error may occur on the first read. Windows 10.
---
 syscalls_windows.go | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/syscalls_windows.go b/syscalls_windows.go
index f38a9cb..7c2dc37 100644
--- a/syscalls_windows.go
+++ b/syscalls_windows.go
@@ -281,17 +281,17 @@ func openDev(config Config) (ifce *Interface, err error) {
 	fd := &wfile{fd: file, ro: ro, wo: wo}
 	ifce = &Interface{isTAP: (config.DeviceType == TAP), ReadWriteCloser: fd}
 
-	// bring up device.
-	if err := setStatus(file, true); err != nil {
-		return nil, err
-	}
-
 	//TUN
 	if config.DeviceType == TUN {
 		if err := setTUN(file, config.PlatformSpecificParams.Network); err != nil {
 			return nil, err
 		}
 	}
+	
+	// bring up device.
+	if err := setStatus(file, true); err != nil {
+		return nil, err
+	}
 
 	// find the name of tap interface(u need it to set the ip or other command)
 	ifces, err := net.Interfaces()