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-rw-r--r--src/vnet/ipsec/esp.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/vnet/ipsec/esp.h b/src/vnet/ipsec/esp.h
index 98db70179bd..bc67f9d0783 100644
--- a/src/vnet/ipsec/esp.h
+++ b/src/vnet/ipsec/esp.h
@@ -80,7 +80,7 @@ typedef struct
esp_main_per_thread_data_t *per_thread_data;
} esp_main_t;
-esp_main_t esp_main;
+extern esp_main_t esp_main;
#define ESP_WINDOW_SIZE (64)
#define ESP_SEQ_MAX (4294967295UL)