Index: usr.sbin/bhyve/net_backends.h
===================================================================
--- usr.sbin/bhyve/net_backends.h
+++ usr.sbin/bhyve/net_backends.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2019 Vincenzo Maffione <vmaffione@FreeBSD.org>
  *
  * Redistribution and use in source and binary forms, with or without
Index: usr.sbin/bhyve/net_backends.c
===================================================================
--- usr.sbin/bhyve/net_backends.c
+++ usr.sbin/bhyve/net_backends.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2019 Vincenzo Maffione <vmaffione@FreeBSD.org>
  *
  * Redistribution and use in source and binary forms, with or without
Index: usr.sbin/bhyve/net_utils.h
===================================================================
--- usr.sbin/bhyve/net_utils.h
+++ usr.sbin/bhyve/net_utils.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2019 Vincenzo Maffione <v.maffione@gmail.com>
  *
  * Redistribution and use in source and binary forms, with or without
Index: usr.sbin/bhyve/net_utils.c
===================================================================
--- usr.sbin/bhyve/net_utils.c
+++ usr.sbin/bhyve/net_utils.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2011 NetApp, Inc.
  *
  * Redistribution and use in source and binary forms, with or without