From c53831696b5aee61823c0da62a96055d3f0e02fd Mon Sep 17 00:00:00 2001
From: Arceliar <Arceliar@users.noreply.github.com>
Date: Sun, 1 Sep 2019 13:06:25 -0500
Subject: [PATCH] make tun stop check that iface is not nil, in case it wasn't
 set for some reason (windows bugs)

---
 src/tuntap/tun.go | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/tuntap/tun.go b/src/tuntap/tun.go
index 8e1e5b0..74d055e 100644
--- a/src/tuntap/tun.go
+++ b/src/tuntap/tun.go
@@ -189,9 +189,11 @@ func (tun *TunAdapter) Stop() error {
 
 func (tun *TunAdapter) _stop() error {
 	tun.isOpen = false
-	// TODO: we have nothing that cleanly stops all the various goroutines opened
 	// by TUN/TAP, e.g. readers/writers, sessions
-	tun.iface.Close()
+	if tun.iface != nil {
+		// Just in case we failed to start up the iface for some reason, this can apparently happen on Windows
+		tun.iface.Close()
+	}
 	return nil
 }