Fix TUN/TAP initialization with newer TAP-Windows.

XTLS · Nov 13, 2016 · 3940ed0 · 3940ed0
1 parent 2b6f4d5
commit 3940ed0
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/tuntap/BTap.c b/tuntap/BTap.c
@@ -268,9 +268,9 @@ int BTap_Init2 (BTap *o, BReactor *reactor, struct BTap_init_data init_data, BTa
 
     // get MTU
 
-    ULONG umtu;
+    ULONG umtu = 0;
 
-    if (!DeviceIoControl(o->device, TAP_IOCTL_GET_MTU, NULL, 0, &umtu, sizeof(umtu), &len, NULL)) {
+    if (!DeviceIoControl(o->device, TAP_IOCTL_GET_MTU, &umtu, sizeof(umtu), &umtu, sizeof(umtu), &len, NULL)) {
         BLog(BLOG_ERROR, "DeviceIoControl(TAP_IOCTL_GET_MTU) failed");
         goto fail2;
     }