diff --git a/include/net/if.h b/include/net/if.h
index 28da8d7324..e54c1b81ec 100644
--- a/include/net/if.h
+++ b/include/net/if.h
@@ -160,6 +160,7 @@ struct can_ioctl_data_s
 struct lifreq
 {
   char                        lifr_name[IFNAMSIZ];      /* Network device name (e.g. "eth0") */
+  int16_t                     lifr_ifindex;             /* Interface index */
   union
   {
     struct sockaddr_storage   lifru_addr;               /* IP Address */