From b4cef2524f3b2be11f905c4114e2e747a8101160 Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Tue, 22 May 2018 18:33:50 +0200
Subject: Fix integer conversions

---
 tun_darwin.go | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

(limited to 'tun_darwin.go')

diff --git a/tun_darwin.go b/tun_darwin.go
index 8e4b970..e5a01a7 100644
--- a/tun_darwin.go
+++ b/tun_darwin.go
@@ -380,11 +380,5 @@ func (tun *NativeTun) MTU() (int, error) {
 		return 0, fmt.Errorf("failed to get MTU on %s", tun.name)
 	}
 
-	// convert result to signed 32-bit int
-
-	val := binary.LittleEndian.Uint32(ifr[16:20])
-	if val >= (1 << 31) {
-		return int(val-(1<<31)) - (1 << 31), nil
-	}
-	return int(val), nil
+	return int(*(*int32)(unsafe.Pointer(&ifr[16]))), nil
 }
-- 
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