--- a/master/types.h	Tue Jun 27 19:34:21 2006 +0000
+++ b/master/types.h	Tue Jun 27 19:46:25 2006 +0000
@@ -60,6 +60,7 @@
 {
     EC_TYPE_NORMAL, /**< no special slave */
     EC_TYPE_BUS_COUPLER, /**< slave is a bus coupler */
+    EC_TYPE_INFRA, /**< infrastructure slaves, that contain no process data */
     EC_TYPE_EOE /**< slave is an EoE switch */
 }
 ec_special_type_t;