From 39338281d465b1457d89ed7991471d74f98be331 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@anytun.org>
Date: Fri, 20 Feb 2009 19:16:45 +0000
Subject: windows tunDevice reads mtu size now

---
 src/win32/tunDevice.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'src/win32/tunDevice.cpp')

diff --git a/src/win32/tunDevice.cpp b/src/win32/tunDevice.cpp
index 4986381..538269e 100644
--- a/src/win32/tunDevice.cpp
+++ b/src/win32/tunDevice.cpp
@@ -275,4 +275,14 @@ void TunDevice::do_ifconfig()
     msg << "Unable to set device dhcp masq mode: " << LogErrno(err);
     throw std::runtime_error(msg.str());
 	}
+
+  u_long mtu;
+  err = performIoControl(TAP_IOCTL_CONFIG_DHCP_MASQ, &mtu, sizeof(mtu), &mtu, sizeof(mtu));
+  if(err != ERROR_SUCCESS) {
+    CloseHandle(handle_);
+    std::stringstream msg;
+    msg << "Unable to get device mtu: " << LogErrno(err);
+    throw std::runtime_error(msg.str());
+	}
+  conf_.mtu_ = static_cast<u_int16_t>(mtu);
 }
-- 
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