diff --git a/tests/test_leadership.py b/tests/test_leadership.py
index 6b8a227..6070321 100644
--- a/tests/test_leadership.py
+++ b/tests/test_leadership.py
@@ -5,7 +5,7 @@ from .config import config_type, get_config, value_list, global_owner
 from py.test import raises
 
 from tiramisu.setting import groups, owners
-from tiramisu import ChoiceOption, BoolOption, IntOption, IPOption, NetmaskOption, \
+from tiramisu import ChoiceOption, BoolOption, IntOption, IPOption, NetworkOption, NetmaskOption, \
     StrOption, OptionDescription, Leadership, Config
 from tiramisu.error import LeadershipError, PropertiesOptionError, APIError, ConfigError
 from tiramisu.storage import list_sessions
@@ -874,17 +874,19 @@ def test_follower_not_same_not_equal():
 
 
 def test_follower_consistency():
-    ip_admin_eth1 = IPOption('ip_admin_eth1', "ip réseau autorisé", multi=True, default=['1.1.1.1'])
+    network_admin_eth1 = NetworkOption('network_admin_eth1', "ip réseau autorisé", multi=True, default=['1.1.1.1'])
     netmask_admin_eth1 = NetmaskOption('netmask_admin_eth1', "masque du sous-réseau", multi=True)
-    netmask_admin_eth1.impl_add_consistency('ip_netmask', ip_admin_eth1)
-    interface1 = Leadership('interface1', '', [ip_admin_eth1, netmask_admin_eth1])
+    netmask_admin_eth1.impl_add_consistency('network_netmask', network_admin_eth1)
+    interface1 = Leadership('interface1', '', [network_admin_eth1, netmask_admin_eth1])
     od1 = OptionDescription('od', '', [interface1])
     maconfig = OptionDescription('toto', '', [od1])
     cfg = Config(maconfig)
     cfg.property.read_write()
-    cfg.option('od.interface1.ip_admin_eth1').value.set(['192.168.1.1', '192.168.2.1'])
+    cfg.option('od.interface1.network_admin_eth1').value.set(['192.168.1.128', '192.168.2.0', '192.168.3.128'])
+    cfg.option('od.interface1.netmask_admin_eth1', 0).value.set('255.255.255.128')
     cfg.option('od.interface1.netmask_admin_eth1', 1).value.set('255.255.255.0')
-    cfg.option('od.interface1.ip_admin_eth1').value.pop(0)
+    cfg.option('od.interface1.netmask_admin_eth1', 2).value.set('255.255.255.128')
+    cfg.option('od.interface1.network_admin_eth1').value.pop(0)
 
 
 def test_follower_force_store_value():
diff --git a/tiramisu/config.py b/tiramisu/config.py
index 9d2e498..3b4cfdf 100644
--- a/tiramisu/config.py
+++ b/tiramisu/config.py
@@ -282,8 +282,7 @@ class SubConfig(object):
     def getattr(self,
                 name,
                 option_bag,
-                from_follower=False,
-                follower_check_length=True):
+                from_follower=False):
         """
         attribute notation mechanism for accessing the value of an option
         :param name: attribute name
@@ -315,7 +314,7 @@ class SubConfig(object):
         if not from_follower or option_bag.option.impl_getrequires():
             self.cfgimpl_get_settings().validate_properties(option_bag)
 
-        if follower_check_length and option.impl_is_follower() and not from_follower:
+        if option.impl_is_follower() and not from_follower:
             length = self.cfgimpl_get_length_leadership(option_bag)
             follower_len = self.cfgimpl_get_values()._p_.get_max_length(option_bag.path)
             if follower_len > length:
@@ -324,12 +323,8 @@ class SubConfig(object):
                                                               follower_len,
                                                               length,
                                                               option_bag.index))
-        else:
-            length = None
         if option.impl_is_follower() and option_bag.index is None:
             value = []
-            if length is None:
-                length = self.cfgimpl_get_length_leadership(option_bag)
             for idx in range(length):
                 soption_bag = OptionBag()
                 soption_bag.set_option(option,
diff --git a/tiramisu/option/option.py b/tiramisu/option/option.py
index 80b39c9..d437373 100644
--- a/tiramisu/option/option.py
+++ b/tiramisu/option/option.py
@@ -686,8 +686,7 @@ class Option(BaseOption):
         fromconsistency.append(cons_id)
         coption_bag.fromconsistency = fromconsistency
         current_value = option_bag.config_bag.context.getattr(path,
-                                                              coption_bag,
-                                                              follower_check_length=False)
+                                                              coption_bag)
         if index_ is None and index is not None:
             #if self is a follower and current_option is a leader and func not in ALLOWED_CONST_LIST
             #return only the value of the leader for isolate follower
diff --git a/tiramisu/value.py b/tiramisu/value.py
index e682a7d..8cbf64e 100644
--- a/tiramisu/value.py
+++ b/tiramisu/value.py
@@ -513,12 +513,12 @@ class Values(object):
                                                          length,
                                                          option_bag.option.impl_get_display_name()))
         current_value.pop(index)
-        self.setvalue(current_value,
-                      option_bag,
-                      _commit=True)
         subconfig.cfgimpl_get_description().pop(self,
                                                 index,
                                                 option_bag)
+        self.setvalue(current_value,
+                      option_bag,
+                      _commit=True)
 
     #______________________________________________________________________
     # information