diff --git a/lib/if.h b/lib/if.h
index 8081be8..029f57f 100644
--- a/lib/if.h
+++ b/lib/if.h
@@ -139,6 +139,8 @@
 #ifdef HAVE_NET_RT_IFLIST
   struct if_data stats;
 #endif /* HAVE_NET_RT_IFLIST */
+
+  vrf_id_t vrf_id;
 };
 
 /* Connected address structure. */