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-rw-r--r--src/vnet/ipsec-gre/ipsec_gre.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/vnet/ipsec-gre/ipsec_gre.h b/src/vnet/ipsec-gre/ipsec_gre.h
index a2ca64b6f74..5d56b4e1e1f 100644
--- a/src/vnet/ipsec-gre/ipsec_gre.h
+++ b/src/vnet/ipsec-gre/ipsec_gre.h
@@ -78,7 +78,7 @@ typedef struct
vnet_main_t *vnet_main; /**< convenience */
} ipsec_gre_main_t;
-ipsec_gre_main_t ipsec_gre_main;
+extern ipsec_gre_main_t ipsec_gre_main;
extern vlib_node_registration_t ipsec_gre_input_node;
extern vnet_device_class_t ipsec_gre_device_class;