From b8c9e13c6e0db93133dc302b40e25b615fece9b8 Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Tue, 22 May 2018 01:26:47 +0200
Subject: [PATCH] Call shutdown on route socket on freebsd

---
 tun_freebsd.go | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/tun_freebsd.go b/tun_freebsd.go
index e2ec511..f738c7f 100644
--- a/tun_freebsd.go
+++ b/tun_freebsd.go
@@ -441,8 +441,7 @@ func (tun *NativeTun) Close() error {
 	err2 := tun.fd.Close()
 	err3 := tunDestroy(tun.name)
 	if tun.routeSocket != -1 {
-		// Surprisingly, on FreeBSD, simply closing a route socket is enough to unblock it.
-		// We don't even need to call shutdown, or use a rwcancel. TODO: CONFIRM THIS CLAIM. IT WAS TRUE ON DARWIN BUT...
+		unix.Shutdown(tun.routeSocket, unix.SHUT_RDWR)
 		err4 = unix.Close(tun.routeSocket)
 		tun.routeSocket = -1
 	} else if tun.events != nil {