--- a/management/univention-directory-manager-modules/modules/univention/admin/handlers/dhcp/pool.py	
+++ a/management/univention-directory-manager-modules/modules/univention/admin/handlers/dhcp/pool.py	
@@ -91,6 +91,7 @@ 
 			options=[],
 			required=0,
 			may_change=1,
+			dontsearch=1,
 			identifies=0
 		),
 	'unknown_clients': univention.admin.property(
@@ -101,6 +102,7 @@ 
 			options=[],
 			required=0,
 			may_change=1,
+			dontsearch=1,
 			identifies=0
 		),
 	'dynamic_bootp_clients': univention.admin.property(
@@ -111,6 +113,7 @@ 
 			options=[],
 			required=0,
 			may_change=1,
+			dontsearch=1,
 			identifies=0
 		),
 	'all_clients': univention.admin.property(
@@ -121,6 +124,7 @@ 
 			options=[],
 			required=0,
 			may_change=1,
+			dontsearch=1,
 			identifies=0
 		),
 }