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-rw-r--r--sys/net/if_gre.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/net/if_gre.h b/sys/net/if_gre.h
index 8fb811cbe4bdf..0eac9e9f33b09 100644
--- a/sys/net/if_gre.h
+++ b/sys/net/if_gre.h
@@ -1,4 +1,6 @@
/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* Copyright (c) 2014 Andrey V. Elsukov <ae@FreeBSD.org>
* All rights reserved