From fde0a9525ae5be7f6356a410f1bfc52ecc720f85 Mon Sep 17 00:00:00 2001
From: Colin Adler <colin1adler@gmail.com>
Date: Mon, 12 Sep 2022 22:03:55 -0500
Subject: tun/netstack: ensure `(*netTun).incomingPacket` chan is closed

Without this, `device.Close()` will deadlock.

Signed-off-by: Colin Adler <colin1adler@gmail.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
---
 tun/netstack/tun.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tun/netstack/tun.go b/tun/netstack/tun.go
index b0e7b70..f232ca3 100644
--- a/tun/netstack/tun.go
+++ b/tun/netstack/tun.go
@@ -164,6 +164,10 @@ func (tun *netTun) Close() error {
 
 	tun.ep.Close()
 
+	if tun.incomingPacket != nil {
+		close(tun.incomingPacket)
+	}
+
 	return nil
 }
 
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