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-rw-r--r--contrib/examples/nat-hole-punching/nat-punch-client.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/contrib/examples/nat-hole-punching/nat-punch-client.c b/contrib/examples/nat-hole-punching/nat-punch-client.c
index aa00d35..f27d220 100644
--- a/contrib/examples/nat-hole-punching/nat-punch-client.c
+++ b/contrib/examples/nat-hole-punching/nat-punch-client.c
@@ -1,6 +1,9 @@
-/* Copyright (C) 2015-2017 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. */
-
-/* Example only. Do not run in production. */
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * Copyright (C) 2015-2017 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ *
+ * Example only. Do not run in production.
+ */
#include <stdio.h>
#include <unistd.h>