diff -r 4d8c9a441ef6 -r b544025bd696 lib/domain.c
--- a/lib/domain.c	Thu May 12 16:38:48 2011 +0200
+++ b/lib/domain.c	Thu May 12 16:45:02 2011 +0200
@@ -52,6 +52,13 @@
     // nothing to do
 }
 
+
+/*****************************************************************************/
+unsigned int ecrt_domain_index(ec_domain_t *domain)
+{
+    return domain->index;
+}
+
 /*****************************************************************************/
 
 int ecrt_domain_reg_pdo_entry_list(ec_domain_t *domain,