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-rw-r--r--src/vnet/gre/gre.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/vnet/gre/gre.h b/src/vnet/gre/gre.h
index ad3e025a0ff..9c12eb4bc13 100644
--- a/src/vnet/gre/gre.h
+++ b/src/vnet/gre/gre.h
@@ -195,7 +195,7 @@ gre_get_protocol_info (gre_main_t * em, gre_protocol_t protocol)
return p ? vec_elt_at_index (em->protocol_infos, p[0]) : 0;
}
-gre_main_t gre_main;
+extern gre_main_t gre_main;
/* Register given node index to take input for given gre type. */
void