diff --git a/merlin b/merlin
index 677b1dd..de64a30 100644
--- a/merlin
+++ b/merlin
@@ -1,9 +1,9 @@
 [nova-compute]
-merlin-managementnode002 physical_interface_mappings=eno3
-merlin-managementnode003 physical_interface_mappings=eno3
-merlin-node001 physical_interface_mappings=eno3
-merlin-node003 physical_interface_mappings=eno3
-merlin-node004 physical_interface_mappings=eno3
+merlin-managementnode002 physical_interface_mappings=provider:eno3
+merlin-managementnode003 physical_interface_mappings=provider:eno3
+merlin-node001 physical_interface_mappings=provider:eno3
+merlin-node003 physical_interface_mappings=provider:eno3
+merlin-node004 physical_interface_mappings=provider:eno3
 
 [databases]
 merlin-managementnode001
@@ -28,7 +28,7 @@ merlin-managementnode001
 merlin-managementnode001
 
 [neutron-controller]
-merlin-managementnode001 physical_interface_mappings=eno3
+merlin-managementnode001 physical_interface_mappings=provider:eno3
 
 [heat]
 merlin-managementnode001