diff --git a/tiramisu/option.py b/tiramisu/option.py
index fee61b5..30277e2 100644
--- a/tiramisu/option.py
+++ b/tiramisu/option.py
@@ -802,13 +802,13 @@ class IPOption(Option):
         ip = IP('{0}/32'.format(value))
         if not self._allow_reserved and ip.iptype() == 'RESERVED':
             if warnings_only:
-                msg = _("IP shouldn't be in reserved class")
+                msg = _("IP is in reserved class")
             else:
                 msg = _("invalid IP, mustn't be in reserved class")
             raise ValueError(msg)
         if self._private_only and not ip.iptype() == 'PRIVATE':
             if warnings_only:
-                msg = _("IP should be in private class")
+                msg = _("IP is not in private class")
             else:
                 msg = _("invalid IP, must be in private class")
             raise ValueError(msg)
@@ -921,7 +921,7 @@ class NetworkOption(Option):
         ip = IP(value)
         if ip.iptype() == 'RESERVED':
             if warnings_only:
-                msg = _("network address shouldn't be in reserved class")
+                msg = _("network address is in reserved class")
             else:
                 msg = _("invalid network address, mustn't be in reserved class")
             raise ValueError(msg)
diff --git a/translations/fr/tiramisu.po b/translations/fr/tiramisu.po
index 3dee004..0e1b339 100644
--- a/translations/fr/tiramisu.po
+++ b/translations/fr/tiramisu.po
@@ -2,7 +2,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Tiramisu\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2014-03-12 21:49+CET\n"
+"POT-Creation-Date: 2014-03-24 19:54+CET\n"
 "PO-Revision-Date: \n"
 "Last-Translator: Emmanuel Garette <egarette@cadoles.com>\n"
 "Language-Team: Tiramisu's team <egarette@cadoles.com>\n"
@@ -14,115 +14,115 @@ msgstr ""
 "Plural-Forms: nplurals=2; plural=(n > 1);\n"
 "X-Poedit-SourceCharset: UTF-8\n"
 
-#: tiramisu/autolib.py:162
+#: tiramisu/autolib.py:161
 msgid ""
 "unable to carry out a calculation, option {0} has properties: {1} for: {2}"
 msgstr ""
 "impossible d'effectuer le calcul, l'option {0} a les propriétés : {1} pour : "
 "{2}"
 
-#: tiramisu/config.py:52
+#: tiramisu/config.py:51
 msgid "descr must be an optiondescription, not {0}"
 msgstr "descr doit être une optiondescription pas un {0}"
 
-#: tiramisu/config.py:127
+#: tiramisu/config.py:126
 msgid "unknown group_type: {0}"
 msgstr "group_type inconnu: {0}"
 
-#: tiramisu/config.py:164 tiramisu/setting.py:339 tiramisu/value.py:57
-#: tiramisu/value.py:485
+#: tiramisu/config.py:163 tiramisu/setting.py:334 tiramisu/value.py:55
+#: tiramisu/value.py:483
 msgid "the context does not exist anymore"
 msgstr "le context n'existe plus"
 
-#: tiramisu/config.py:169
+#: tiramisu/config.py:168
 msgid "no option description found for this config (may be GroupConfig)"
 msgstr ""
 "pas d'option description trouvé pour cette config (peut être un GroupConfig)"
 
-#: tiramisu/config.py:195
+#: tiramisu/config.py:194
 msgid "can't assign to an OptionDescription"
 msgstr "ne peut pas attribuer une valeur à une OptionDescription"
 
-#: tiramisu/config.py:325
+#: tiramisu/config.py:324
 msgid "unknown type_ type {0}for _find"
 msgstr "type_ type {0} pour _find inconnu"
 
-#: tiramisu/config.py:364
+#: tiramisu/config.py:363
 msgid "no option found in config with these criteria"
 msgstr "aucune option trouvée dans la config avec ces critères"
 
-#: tiramisu/config.py:414
+#: tiramisu/config.py:413
 msgid "make_dict can't filtering with value without option"
 msgstr "make_dict ne peut filtrer sur une valeur mais sans option"
 
-#: tiramisu/config.py:435
+#: tiramisu/config.py:434
 msgid "unexpected path {0}, should start with {1}"
 msgstr "chemin imprévu {0}, devrait commencer par {1}"
 
-#: tiramisu/config.py:489
+#: tiramisu/config.py:491
 msgid "opt in getowner must be an option not {0}"
 msgstr "opt dans getowner doit être une option pas {0}"
 
-#: tiramisu/config.py:532
+#: tiramisu/config.py:534
 msgid "cannot serialize Config with MetaConfig"
 msgstr "impossible de sérialiser une Config avec une MetaConfig"
 
-#: tiramisu/config.py:546
+#: tiramisu/config.py:548
 msgid "this storage is not serialisable, could be a none persistent storage"
 msgstr "ce storage n'est sérialisable, devrait être une storage non persistant"
 
-#: tiramisu/config.py:609
+#: tiramisu/config.py:611
 msgid "metaconfig's children must be a list"
 msgstr "enfants d'une metaconfig doit être une liste"
 
-#: tiramisu/config.py:703
+#: tiramisu/config.py:705
 msgid "metaconfig's children should be config, not {0}"
 msgstr "enfants d'une metaconfig doit être une config, pas {0}"
 
-#: tiramisu/config.py:707
+#: tiramisu/config.py:709
 msgid "child has already a metaconfig's"
 msgstr "enfant a déjà une metaconfig"
 
-#: tiramisu/config.py:711
+#: tiramisu/config.py:713
 msgid "all config in metaconfig must have the same optiondescription"
 msgstr ""
 "toutes les configs d'une metaconfig doivent avoir la même optiondescription"
 
-#: tiramisu/option.py:67
+#: tiramisu/option.py:66
 msgid "invalid name: {0} for option"
 msgstr "nom invalide : {0} pour l'option"
 
-#: tiramisu/option.py:76
+#: tiramisu/option.py:75
 msgid "invalid properties type {0} for {1}, must be a tuple"
 msgstr "type des properties invalide {0} pour {1}, doit être un tuple"
 
-#: tiramisu/option.py:114
+#: tiramisu/option.py:113
 msgid "'{0}' ({1}) object attribute '{2}' is read-only"
 msgstr "l'attribut {2} de l'objet '{0}' ({1}) est en lecture seule"
 
-#: tiramisu/option.py:141 tiramisu/value.py:395
+#: tiramisu/option.py:140 tiramisu/value.py:393
 msgid "information's item not found: {0}"
 msgstr "aucune config spécifiée alors que c'est nécessaire"
 
-#: tiramisu/option.py:203
+#: tiramisu/option.py:202
 msgid "cannot serialize Option, only in OptionDescription"
 msgstr "ne peut serialiser une Option, seulement via une OptionDescription"
 
-#: tiramisu/option.py:306
+#: tiramisu/option.py:305
 msgid "a default_multi is set whereas multi is False in option: {0}"
 msgstr ""
 "une default_multi est renseignée alors que multi est False dans l'option : "
 "{0}"
 
-#: tiramisu/option.py:312
+#: tiramisu/option.py:311
 msgid "invalid default_multi value {0} for option {1}: {2}"
 msgstr "la valeur default_multi est invalide {0} pour l'option {1} : {2}"
 
-#: tiramisu/option.py:317
+#: tiramisu/option.py:316
 msgid "default value not allowed if option: {0} is calculated"
 msgstr "la valeur par défaut n'est pas possible si l'option {0} est calculée"
 
-#: tiramisu/option.py:320
+#: tiramisu/option.py:319
 msgid ""
 "params defined for a callback function but no callback defined yet for "
 "option {0}"
@@ -130,289 +130,289 @@ msgstr ""
 "params définis pour une fonction callback mais par de callback encore "
 "définis pour l'option {0}"
 
-#: tiramisu/option.py:425 tiramisu/option.py:450
+#: tiramisu/option.py:424 tiramisu/option.py:454
 msgid "invalid value for option {0}: {1}"
 msgstr "valeur invalide pour l'option {0} : {1}"
 
-#: tiramisu/option.py:444
+#: tiramisu/option.py:448
 msgid "warning on the value of the option {0}: {1}"
 msgstr "avertissement sur la valeur de l'option {0} : {1}"
 
-#: tiramisu/option.py:461
+#: tiramisu/option.py:465
 msgid "invalid value {0} for option {1} which must be a list"
 msgstr "valeur invalide pour l'option {0} : {1} laquelle doit être une liste"
 
-#: tiramisu/option.py:519
+#: tiramisu/option.py:523
 msgid "consistency must be set with an option"
 msgstr "consistency doit être configuré avec une option"
 
-#: tiramisu/option.py:521
+#: tiramisu/option.py:525
 msgid "cannot add consistency with itself"
 msgstr "ne peut ajouter une consistency avec lui même"
 
-#: tiramisu/option.py:523
+#: tiramisu/option.py:527
 msgid "every options in consistency must be multi or none"
 msgstr ""
 "toutes les options d'une consistency doivent être multi ou ne pas l'être"
 
-#: tiramisu/option.py:544
+#: tiramisu/option.py:548
 msgid "same value for {0} and {1}, should be different"
 msgstr "même valeur pour {0} et {1}, devrait être différent"
 
-#: tiramisu/option.py:546
+#: tiramisu/option.py:550
 msgid "same value for {0} and {1}, must be different"
 msgstr "même valeur pour {0} et {1}, doit être différent"
 
-#: tiramisu/option.py:640
+#: tiramisu/option.py:644
 msgid "values must be a tuple for {0}"
 msgstr "values doit être un tuple pour {0}"
 
-#: tiramisu/option.py:643
+#: tiramisu/option.py:647
 msgid "open_values must be a boolean for {0}"
 msgstr "open_values doit être un booléen pour {0}"
 
-#: tiramisu/option.py:665
+#: tiramisu/option.py:669
 msgid "value {0} is not permitted, only {1} is allowed"
 msgstr "valeur {0} n'est pas permis, seules {1} sont autorisées"
 
-#: tiramisu/option.py:677
+#: tiramisu/option.py:681
 msgid "invalid boolean"
 msgstr "booléen invalide"
 
-#: tiramisu/option.py:687
+#: tiramisu/option.py:691
 msgid "invalid integer"
 msgstr "nombre invalide"
 
-#: tiramisu/option.py:697
+#: tiramisu/option.py:701
 msgid "invalid float"
 msgstr "invalide nombre flottan"
 
-#: tiramisu/option.py:707
+#: tiramisu/option.py:711
 msgid "invalid string"
 msgstr "invalide caractère"
 
-#: tiramisu/option.py:724
+#: tiramisu/option.py:728
 msgid "invalid unicode"
 msgstr "invalide unicode"
 
-#: tiramisu/option.py:736
+#: tiramisu/option.py:740
 msgid "malformed symlinkoption must be an option for symlink {0}"
 msgstr "symlinkoption mal formé, doit être une option pour symlink {0}"
 
-#: tiramisu/option.py:787 tiramisu/option.py:790 tiramisu/option.py:795
+#: tiramisu/option.py:791 tiramisu/option.py:794 tiramisu/option.py:799
 msgid "invalid IP"
 msgstr "adresse IP invalide"
 
-#: tiramisu/option.py:801
-msgid "IP shouldn't be in reserved class"
-msgstr "l'adresse IP ne devrait pas être d'une classe réservée"
+#: tiramisu/option.py:805
+msgid "IP is in reserved class"
+msgstr "l'adresse IP est dans une plage d'adresse réservée"
 
-#: tiramisu/option.py:803
+#: tiramisu/option.py:807
 msgid "invalid IP, mustn't be in reserved class"
 msgstr "adresse IP invalide, ne doit pas être dans une classe réservée"
 
-#: tiramisu/option.py:807
-msgid "IP should be in private class"
-msgstr "l'adresse IP devrait être dans une classe privée"
+#: tiramisu/option.py:811
+msgid "IP is not in private class"
+msgstr "l'adresse IP n'est pas dans une plage d'adressage privée"
 
-#: tiramisu/option.py:809
+#: tiramisu/option.py:813
 msgid "invalid IP, must be in private class"
 msgstr "adresse IP invalide, doit être dans la classe privée"
 
-#: tiramisu/option.py:814 tiramisu/option.py:989
+#: tiramisu/option.py:818 tiramisu/option.py:993
 msgid "invalid len for vals"
 msgstr "longueur invalide pour vals"
 
-#: tiramisu/option.py:820
+#: tiramisu/option.py:824
 msgid "IP {0} ({1}) not in network {2} ({3}) with netmask {4} ({5})"
 msgstr "IP {0} ({1}) pas dans le réseau {2} ({3}) avec le masque {4} ({5})"
 
-#: tiramisu/option.py:823
+#: tiramisu/option.py:827
 msgid "invalid IP {0} ({1}) not in network {2} ({3}) with netmask {4} ({5})"
 msgstr ""
 "IP invalide {0} ({1}) pas dans le réseau {2} ({3}) avec le masque {4} ({5})"
 
-#: tiramisu/option.py:864
+#: tiramisu/option.py:868
 msgid "inconsistency in allowed range"
 msgstr "inconsistence dans la plage autorisée"
 
-#: tiramisu/option.py:869
+#: tiramisu/option.py:873
 msgid "max value is empty"
 msgstr "la valeur maximum est vide"
 
-#: tiramisu/option.py:886
+#: tiramisu/option.py:890
 msgid "invalid port, range must have two values only"
 msgstr "port invalide, une plage doit avoir deux valeurs seulement"
 
-#: tiramisu/option.py:889
+#: tiramisu/option.py:893
 msgid "invalid port, first port in range must be smaller than the second one"
 msgstr ""
 "port invalide, le premier port d'une plage doit être plus petit que le second"
 
-#: tiramisu/option.py:898
+#: tiramisu/option.py:902
 msgid "invalid port"
 msgstr "port invalide"
 
-#: tiramisu/option.py:900
+#: tiramisu/option.py:904
 msgid "invalid port, must be an between {0} and {1}"
 msgstr "port invalide, port doit être entre {0} et {1}"
 
-#: tiramisu/option.py:914
+#: tiramisu/option.py:918
 msgid "invalid network address"
 msgstr "adresse réseau invalide"
 
-#: tiramisu/option.py:920
-msgid "network address shouldn't be in reserved class"
-msgstr "l'adresse réseau ne devait pas être dans la classe réservée"
+#: tiramisu/option.py:924
+msgid "network address is in reserved class"
+msgstr "l'adresse réseau est pas dans une plage d'adresse réservée"
 
-#: tiramisu/option.py:922
+#: tiramisu/option.py:926
 msgid "invalid network address, mustn't be in reserved class"
 msgstr "adresse réseau invalide, ne doit pas être dans la classe réservée"
 
-#: tiramisu/option.py:935
+#: tiramisu/option.py:939
 msgid "invalid netmask address"
 msgstr "masque de sous-réseau invalide"
 
-#: tiramisu/option.py:952
+#: tiramisu/option.py:956
 msgid "invalid len for opts"
 msgstr "longueur invalide pour opts"
 
-#: tiramisu/option.py:966
+#: tiramisu/option.py:970
 msgid "invalid IP {0} ({1}) with netmask {2}, this IP is a network"
 msgstr "IP invalide {0} ({1}) avec masque {2}, cette IP est un réseau"
 
-#: tiramisu/option.py:971
+#: tiramisu/option.py:975
 msgid "invalid network {0} ({1}) with netmask {2}"
 msgstr "réseau invalide {0} ({1}) avec masque {2}"
 
-#: tiramisu/option.py:985
+#: tiramisu/option.py:989
 msgid "invalid broadcast address"
 msgstr "adresse de broadcast invalide"
 
-#: tiramisu/option.py:994
+#: tiramisu/option.py:998
 msgid ""
 "invalid broadcast {0} ({1}) with network {2} ({3}) and netmask {4} ({5})"
 msgstr ""
 "Broadcast invalide {0} ({1}) avec le réseau {2} ({3}) et le masque {4} ({5})"
 
-#: tiramisu/option.py:1016
+#: tiramisu/option.py:1020
 msgid "unknown type_ {0} for hostname"
 msgstr "type_ inconnu {0} pour le nom d'hôte"
 
-#: tiramisu/option.py:1019
+#: tiramisu/option.py:1023
 msgid "allow_ip must be a boolean"
 msgstr "allow_ip doit être un booléen"
 
-#: tiramisu/option.py:1021
+#: tiramisu/option.py:1025
 msgid "allow_without_dot must be a boolean"
 msgstr "allow_without_dot doit être un booléen"
 
-#: tiramisu/option.py:1065
+#: tiramisu/option.py:1069
 msgid "invalid domainname, must have dot"
 msgstr "nom de domaine invalide, doit avoir un point"
 
-#: tiramisu/option.py:1067
+#: tiramisu/option.py:1071
 msgid "invalid domainname's length (max 255)"
 msgstr "longueur du nom de domaine invalide (maximum {1})"
 
-#: tiramisu/option.py:1069
+#: tiramisu/option.py:1073
 msgid "invalid domainname's length (min 2)"
 msgstr "longueur du nom de domaine invalide (minimum 2)"
 
-#: tiramisu/option.py:1071
+#: tiramisu/option.py:1075
 msgid "invalid domainname"
 msgstr "nom de domaine invalide"
 
-#: tiramisu/option.py:1084
+#: tiramisu/option.py:1088
 msgid "invalid email address, must contains one @"
 msgstr "adresse email invalide, doit contenir un @"
 
-#: tiramisu/option.py:1087
+#: tiramisu/option.py:1091
 msgid "invalid username in email address"
 msgstr "nom d'utilisateur invalide dans une adresse email"
 
-#: tiramisu/option.py:1100
+#: tiramisu/option.py:1104
 msgid "invalid url, must start with http:// or https://"
 msgstr "URL invalide, doit démarrer avec http:// ou https://"
 
-#: tiramisu/option.py:1119
+#: tiramisu/option.py:1123
 msgid "invalid url, port must be an between 0 and 65536"
 msgstr "URL invalide, port doit être entre 0 et 65536"
 
-#: tiramisu/option.py:1125
+#: tiramisu/option.py:1129
 msgid "invalid url, must ends with filename"
 msgstr "URL invalide, doit finir avec un nom de fichier"
 
-#: tiramisu/option.py:1137
+#: tiramisu/option.py:1141
 msgid "invalid username"
 msgstr "utilisateur invalide"
 
-#: tiramisu/option.py:1148
+#: tiramisu/option.py:1152
 msgid "invalid filename"
 msgstr "nom de fichier invalide"
 
-#: tiramisu/option.py:1175
+#: tiramisu/option.py:1179
 msgid "duplicate option name: {0}"
 msgstr "nom de l'option dupliqué : {0}"
 
-#: tiramisu/option.py:1193
+#: tiramisu/option.py:1197
 msgid "unknown Option {0} in OptionDescription {1}"
 msgstr "Option {0} inconnue pour l'OptionDescription {1}"
 
-#: tiramisu/option.py:1244
+#: tiramisu/option.py:1248
 msgid "duplicate option: {0}"
 msgstr "option dupliquée : {0}"
 
-#: tiramisu/option.py:1275
+#: tiramisu/option.py:1279
 msgid "consistency with option {0} which is not in Config"
 msgstr "consistency avec l'option {0} qui n'est pas dans une Config"
 
-#: tiramisu/option.py:1283
+#: tiramisu/option.py:1287
 msgid "no option for path {0}"
 msgstr "pas d'option pour le chemin {0}"
 
-#: tiramisu/option.py:1289
+#: tiramisu/option.py:1293
 msgid "no option {0} found"
 msgstr "pas d'option {0} trouvée"
 
-#: tiramisu/option.py:1299
+#: tiramisu/option.py:1303
 msgid "cannot change group_type if already set (old {0}, new {1})"
 msgstr "ne peut changer group_type si déjà spécifié (ancien {0}, nouveau {1})"
 
-#: tiramisu/option.py:1311
+#: tiramisu/option.py:1315
 msgid "master group {0} shall not have a subgroup"
 msgstr "groupe maître {0} ne doit pas avoir de sous-groupe"
 
-#: tiramisu/option.py:1314
+#: tiramisu/option.py:1318
 msgid "master group {0} shall not have a symlinkoption"
 msgstr "groupe maître {0} ne doit pas avoir de symlinkoption"
 
-#: tiramisu/option.py:1317
+#: tiramisu/option.py:1321
 msgid "not allowed option {0} in group {1}: this option is not a multi"
 msgstr ""
 "option non autorisée {0} dans le groupe {1} : cette option n'est pas une "
 "multi"
 
-#: tiramisu/option.py:1327
+#: tiramisu/option.py:1331
 msgid "master group with wrong master name for {0}"
 msgstr "le groupe maître avec un nom de maître érroné pour {0}"
 
-#: tiramisu/option.py:1335
+#: tiramisu/option.py:1339
 msgid "callback of master's option shall not refered a slave's ones"
 msgstr ""
 "callback d'une variable maitre ne devrait pas référencer des variables "
 "esclaves"
 
-#: tiramisu/option.py:1343
+#: tiramisu/option.py:1347
 msgid "group_type: {0} not allowed"
 msgstr "group_type : {0} non autorisé"
 
-#: tiramisu/option.py:1443
+#: tiramisu/option.py:1444
 msgid "malformed requirements type for option: {0}, must be a dict"
 msgstr ""
 "type requirements malformé pour l'option : {0}, doit être un dictionnaire"
 
-#: tiramisu/option.py:1460
+#: tiramisu/option.py:1461
 msgid ""
 "malformed requirements for option: {0} require must have option, expected "
 "and action keys"
@@ -420,110 +420,110 @@ msgstr ""
 "requirements malformé pour l'option : {0} l'exigence doit avoir les clefs "
 "option, expected et action"
 
-#: tiramisu/option.py:1465
+#: tiramisu/option.py:1466
 msgid "malformed requirements for option: {0} inverse must be boolean"
 msgstr ""
 "requirements mal formés pour l'option : {0} inverse doit être un booléen"
 
-#: tiramisu/option.py:1469
+#: tiramisu/option.py:1470
 msgid "malformed requirements for option: {0} transitive must be boolean"
 msgstr ""
 "requirements mal formés pour l'option : {0} transitive doit être booléen"
 
-#: tiramisu/option.py:1473
+#: tiramisu/option.py:1474
 msgid "malformed requirements for option: {0} same_action must be boolean"
 msgstr ""
 "requirements mal formés pour l'option : {0} same_action doit être un booléen"
 
-#: tiramisu/option.py:1477
+#: tiramisu/option.py:1478
 msgid "malformed requirements must be an option in option {0}"
 msgstr "requirements mal formés doit être une option dans l'option {0}"
 
-#: tiramisu/option.py:1480
+#: tiramisu/option.py:1481
 msgid "malformed requirements option {0} must not be a multi"
 msgstr "requirements mal formés l'option {0} ne doit pas être une multi"
 
-#: tiramisu/option.py:1486
+#: tiramisu/option.py:1487
 msgid ""
 "malformed requirements second argument must be valid for option {0}: {1}"
 msgstr ""
 "requirements mal formés deuxième argument doit être valide pour l'option "
 "{0} : {1}"
 
-#: tiramisu/option.py:1491
+#: tiramisu/option.py:1492
 msgid "inconsistency in action types for option: {0} action: {1}"
 msgstr "incohérence dans les types action pour l'option : {0} action {1}"
 
-#: tiramisu/option.py:1516
+#: tiramisu/option.py:1517
 msgid "{0} must be a function"
 msgstr "{0} doit être une fonction"
 
-#: tiramisu/option.py:1519
+#: tiramisu/option.py:1520
 msgid "{0}_params must be a dict"
 msgstr "{0}_params doit être un dict"
 
-#: tiramisu/option.py:1522
+#: tiramisu/option.py:1523
 msgid "{0}_params with key {1} mustn't have length different to 1"
 msgstr ""
 "{0}_params avec la clef {1} ne doit pas avoir une longueur différent de 1"
 
-#: tiramisu/option.py:1526
+#: tiramisu/option.py:1527
 msgid "{0}_params must be tuple for key \"{1}\""
 msgstr "{0}_params doit être un tuple pour la clef \"{1}\""
 
-#: tiramisu/option.py:1532
+#: tiramisu/option.py:1533
 msgid "validator not support tuple"
 msgstr "validator n'accepte pas de tuple"
 
-#: tiramisu/option.py:1535
+#: tiramisu/option.py:1536
 msgid "{0}_params must have an option not a {0} for first argument"
 msgstr "{0}_params doit avoir une option pas un {0} pour premier argument"
 
-#: tiramisu/option.py:1539
+#: tiramisu/option.py:1540
 msgid "{0}_params must have a boolean not a {0} for second argument"
 msgstr "{0}_params doit avoir un booléen pas un {0} pour second argument"
 
-#: tiramisu/setting.py:116
+#: tiramisu/setting.py:111
 msgid "can't rebind {0}"
 msgstr "ne peut redéfinir ({0})"
 
-#: tiramisu/setting.py:121
+#: tiramisu/setting.py:116
 msgid "can't unbind {0}"
 msgstr "ne peut supprimer ({0})"
 
-#: tiramisu/setting.py:272
+#: tiramisu/setting.py:267
 msgid "cannot append {0} property for option {1}: this property is calculated"
 msgstr ""
 "ne peut ajouter la propriété {0} dans l'option {1}: cette propriété est "
 "calculée"
 
-#: tiramisu/setting.py:363
+#: tiramisu/setting.py:358
 msgid "opt and all_properties must not be set together in reset"
 msgstr "opt et all_properties ne doit pas être renseigné ensemble dans reset"
 
-#: tiramisu/setting.py:378
+#: tiramisu/setting.py:373
 msgid "if opt is not None, path should not be None in _getproperties"
 msgstr ""
 "si opt n'est pas None, path devrait ne pas être à None dans _getproperties"
 
-#: tiramisu/setting.py:487
+#: tiramisu/setting.py:482
 msgid "cannot change the value for option {0} this option is frozen"
 msgstr ""
 "ne peut modifier la valeur de l'option {0} cette option n'est pas modifiable"
 
-#: tiramisu/setting.py:493
+#: tiramisu/setting.py:488
 msgid "trying to access to an option named: {0} with properties {1}"
 msgstr "tentative d'accès à une option nommée : {0} avec les propriétés {1}"
 
-#: tiramisu/setting.py:511
+#: tiramisu/setting.py:506
 msgid "permissive must be a tuple"
 msgstr "permissive doit être un tuple"
 
-#: tiramisu/setting.py:518 tiramisu/value.py:334
+#: tiramisu/setting.py:513 tiramisu/value.py:332
 msgid "invalid generic owner {0}"
 msgstr "invalide owner générique {0}"
 
-#: tiramisu/setting.py:606
+#: tiramisu/setting.py:601
 msgid ""
 "malformed requirements imbrication detected for option: '{0}' with "
 "requirement on: '{1}'"
@@ -531,77 +531,77 @@ msgstr ""
 "imbrication de requirements mal formés detectée pour l'option : '{0}' avec "
 "requirement sur : '{1}'"
 
-#: tiramisu/setting.py:617
+#: tiramisu/setting.py:612
 msgid "option '{0}' has requirement's property error: {1} {2}"
 msgstr "l'option '{0}' a une erreur de propriété pour le requirement : {1} {2}"
 
-#: tiramisu/storage/__init__.py:52
+#: tiramisu/storage/__init__.py:47
 msgid "storage_type is already set, cannot rebind it"
 msgstr "storage_type est déjà défini, impossible de le redéfinir"
 
-#: tiramisu/storage/__init__.py:86
+#: tiramisu/storage/__init__.py:81
 msgid "option {0} not already exists in storage {1}"
 msgstr "option {0} n'existe pas dans l'espace de stockage {1}"
 
-#: tiramisu/storage/dictionary/storage.py:39
+#: tiramisu/storage/dictionary/storage.py:37
 msgid "dictionary storage cannot delete session"
 msgstr ""
 "impossible de supprimer une session dans un espace de stockage dictionary"
 
-#: tiramisu/storage/dictionary/storage.py:50
+#: tiramisu/storage/dictionary/storage.py:48
 msgid "session already used"
 msgstr "session déjà utilisée"
 
-#: tiramisu/storage/dictionary/storage.py:52
+#: tiramisu/storage/dictionary/storage.py:50
 msgid "a dictionary cannot be persistent"
 msgstr "un espace de stockage dictionary ne peut être persistant"
 
-#: tiramisu/value.py:341
+#: tiramisu/value.py:339
 msgid "no value for {0} cannot change owner to {1}"
 msgstr "pas de valeur pour {0} ne peut changer d'utilisateur pour {1}"
 
-#: tiramisu/value.py:423
+#: tiramisu/value.py:421
 msgid "can force cache only if cache is actived in config"
 msgstr ""
 "peut force la mise en cache seulement si le cache est activé dans la config"
 
-#: tiramisu/value.py:462
+#: tiramisu/value.py:460
 msgid "{0} is already a Multi "
 msgstr "{0} est déjà une Multi"
 
-#: tiramisu/value.py:498 tiramisu/value.py:562
+#: tiramisu/value.py:496 tiramisu/value.py:560
 msgid "invalid len for the slave: {0} which has {1} as master"
 msgstr "longueur invalide pour une esclave : {0} qui a {1} comme maître"
 
-#: tiramisu/value.py:534
+#: tiramisu/value.py:532
 msgid "cannot append a value on a multi option {0} which is a slave"
 msgstr "ne peut ajouter une valeur sur l'option multi {0} qui est une esclave"
 
-#: tiramisu/value.py:572
+#: tiramisu/value.py:570
 msgid "cannot sort multi option {0} if master or slave"
 msgstr "ne peut trier une option multi {0} pour une maître ou une esclave"
 
-#: tiramisu/value.py:576
+#: tiramisu/value.py:574
 msgid "cmp is not permitted in python v3 or greater"
 msgstr "cmp n'est pas permis en python v3 ou supérieure"
 
-#: tiramisu/value.py:585
+#: tiramisu/value.py:583
 msgid "cannot reverse multi option {0} if master or slave"
 msgstr "ne peut inverser une option multi {0} pour une maître ou une esclave"
 
-#: tiramisu/value.py:593
+#: tiramisu/value.py:591
 msgid "cannot insert multi option {0} if master or slave"
 msgstr "ne peut insérer une option multi {0} pour une maître ou une esclave"
 
-#: tiramisu/value.py:601
+#: tiramisu/value.py:599
 msgid "cannot extend multi option {0} if master or slave"
 msgstr "ne peut étendre une option multi {0} pour une maître ou une esclave"
 
-#: tiramisu/value.py:612
+#: tiramisu/value.py:610
 msgid "invalid value {0} for option {1}: {2}"
 msgstr "valeur invalide {0} pour l'option {1} : {2}"
 
-#: tiramisu/value.py:630
+#: tiramisu/value.py:628
 msgid "cannot pop a value on a multi option {0} which is a slave"
 msgstr "ne peut supprimer une valeur dans l'option multi {0} qui est esclave"
 
diff --git a/translations/tiramisu.pot b/translations/tiramisu.pot
index 81a388e..eb41967 100644
--- a/translations/tiramisu.pot
+++ b/translations/tiramisu.pot
@@ -5,7 +5,7 @@
 msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
-"POT-Creation-Date: 2014-03-12 21:49+CET\n"
+"POT-Creation-Date: 2014-03-24 19:54+CET\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -15,552 +15,552 @@ msgstr ""
 "Generated-By: pygettext.py 1.5\n"
 
 
-#: tiramisu/autolib.py:162
+#: tiramisu/autolib.py:161
 msgid "unable to carry out a calculation, option {0} has properties: {1} for: {2}"
 msgstr ""
 
-#: tiramisu/config.py:52
+#: tiramisu/config.py:51
 msgid "descr must be an optiondescription, not {0}"
 msgstr ""
 
-#: tiramisu/config.py:127
+#: tiramisu/config.py:126
 msgid "unknown group_type: {0}"
 msgstr ""
 
-#: tiramisu/config.py:164 tiramisu/setting.py:339 tiramisu/value.py:57
-#: tiramisu/value.py:485
+#: tiramisu/config.py:163 tiramisu/setting.py:334 tiramisu/value.py:55
+#: tiramisu/value.py:483
 msgid "the context does not exist anymore"
 msgstr ""
 
-#: tiramisu/config.py:169
+#: tiramisu/config.py:168
 msgid "no option description found for this config (may be GroupConfig)"
 msgstr ""
 
-#: tiramisu/config.py:195
+#: tiramisu/config.py:194
 msgid "can't assign to an OptionDescription"
 msgstr ""
 
-#: tiramisu/config.py:325
+#: tiramisu/config.py:324
 msgid "unknown type_ type {0}for _find"
 msgstr ""
 
-#: tiramisu/config.py:364
+#: tiramisu/config.py:363
 msgid "no option found in config with these criteria"
 msgstr ""
 
-#: tiramisu/config.py:414
+#: tiramisu/config.py:413
 msgid "make_dict can't filtering with value without option"
 msgstr ""
 
-#: tiramisu/config.py:435
+#: tiramisu/config.py:434
 msgid "unexpected path {0}, should start with {1}"
 msgstr ""
 
-#: tiramisu/config.py:489
+#: tiramisu/config.py:491
 msgid "opt in getowner must be an option not {0}"
 msgstr ""
 
-#: tiramisu/config.py:532
+#: tiramisu/config.py:534
 msgid "cannot serialize Config with MetaConfig"
 msgstr ""
 
-#: tiramisu/config.py:546
+#: tiramisu/config.py:548
 msgid "this storage is not serialisable, could be a none persistent storage"
 msgstr ""
 
-#: tiramisu/config.py:609
+#: tiramisu/config.py:611
 msgid "metaconfig's children must be a list"
 msgstr ""
 
-#: tiramisu/config.py:703
+#: tiramisu/config.py:705
 msgid "metaconfig's children should be config, not {0}"
 msgstr ""
 
-#: tiramisu/config.py:707
+#: tiramisu/config.py:709
 msgid "child has already a metaconfig's"
 msgstr ""
 
-#: tiramisu/config.py:711
+#: tiramisu/config.py:713
 msgid "all config in metaconfig must have the same optiondescription"
 msgstr ""
 
-#: tiramisu/option.py:67
+#: tiramisu/option.py:66
 msgid "invalid name: {0} for option"
 msgstr ""
 
-#: tiramisu/option.py:76
+#: tiramisu/option.py:75
 msgid "invalid properties type {0} for {1}, must be a tuple"
 msgstr ""
 
-#: tiramisu/option.py:114
+#: tiramisu/option.py:113
 msgid "'{0}' ({1}) object attribute '{2}' is read-only"
 msgstr ""
 
-#: tiramisu/option.py:141 tiramisu/value.py:395
+#: tiramisu/option.py:140 tiramisu/value.py:393
 msgid "information's item not found: {0}"
 msgstr ""
 
-#: tiramisu/option.py:203
+#: tiramisu/option.py:202
 msgid "cannot serialize Option, only in OptionDescription"
 msgstr ""
 
-#: tiramisu/option.py:306
+#: tiramisu/option.py:305
 msgid "a default_multi is set whereas multi is False in option: {0}"
 msgstr ""
 
-#: tiramisu/option.py:312
+#: tiramisu/option.py:311
 msgid "invalid default_multi value {0} for option {1}: {2}"
 msgstr ""
 
-#: tiramisu/option.py:317
+#: tiramisu/option.py:316
 msgid "default value not allowed if option: {0} is calculated"
 msgstr ""
 
-#: tiramisu/option.py:320
+#: tiramisu/option.py:319
 msgid "params defined for a callback function but no callback defined yet for option {0}"
 msgstr ""
 
-#: tiramisu/option.py:425 tiramisu/option.py:450
+#: tiramisu/option.py:424 tiramisu/option.py:454
 msgid "invalid value for option {0}: {1}"
 msgstr ""
 
-#: tiramisu/option.py:444
+#: tiramisu/option.py:448
 msgid "warning on the value of the option {0}: {1}"
 msgstr ""
 
-#: tiramisu/option.py:461
+#: tiramisu/option.py:465
 msgid "invalid value {0} for option {1} which must be a list"
 msgstr ""
 
-#: tiramisu/option.py:519
+#: tiramisu/option.py:523
 msgid "consistency must be set with an option"
 msgstr ""
 
-#: tiramisu/option.py:521
+#: tiramisu/option.py:525
 msgid "cannot add consistency with itself"
 msgstr ""
 
-#: tiramisu/option.py:523
+#: tiramisu/option.py:527
 msgid "every options in consistency must be multi or none"
 msgstr ""
 
-#: tiramisu/option.py:544
+#: tiramisu/option.py:548
 msgid "same value for {0} and {1}, should be different"
 msgstr ""
 
-#: tiramisu/option.py:546
+#: tiramisu/option.py:550
 msgid "same value for {0} and {1}, must be different"
 msgstr ""
 
-#: tiramisu/option.py:640
+#: tiramisu/option.py:644
 msgid "values must be a tuple for {0}"
 msgstr ""
 
-#: tiramisu/option.py:643
+#: tiramisu/option.py:647
 msgid "open_values must be a boolean for {0}"
 msgstr ""
 
-#: tiramisu/option.py:665
+#: tiramisu/option.py:669
 msgid "value {0} is not permitted, only {1} is allowed"
 msgstr ""
 
-#: tiramisu/option.py:677
+#: tiramisu/option.py:681
 msgid "invalid boolean"
 msgstr ""
 
-#: tiramisu/option.py:687
+#: tiramisu/option.py:691
 msgid "invalid integer"
 msgstr ""
 
-#: tiramisu/option.py:697
+#: tiramisu/option.py:701
 msgid "invalid float"
 msgstr ""
 
-#: tiramisu/option.py:707
+#: tiramisu/option.py:711
 msgid "invalid string"
 msgstr ""
 
-#: tiramisu/option.py:724
+#: tiramisu/option.py:728
 msgid "invalid unicode"
 msgstr ""
 
-#: tiramisu/option.py:736
+#: tiramisu/option.py:740
 msgid "malformed symlinkoption must be an option for symlink {0}"
 msgstr ""
 
-#: tiramisu/option.py:787 tiramisu/option.py:790 tiramisu/option.py:795
+#: tiramisu/option.py:791 tiramisu/option.py:794 tiramisu/option.py:799
 msgid "invalid IP"
 msgstr ""
 
-#: tiramisu/option.py:801
-msgid "IP shouldn't be in reserved class"
-msgstr ""
-
-#: tiramisu/option.py:803
-msgid "invalid IP, mustn't be in reserved class"
+#: tiramisu/option.py:805
+msgid "IP is in reserved class"
 msgstr ""
 
 #: tiramisu/option.py:807
-msgid "IP should be in private class"
+msgid "invalid IP, mustn't be in reserved class"
 msgstr ""
 
-#: tiramisu/option.py:809
+#: tiramisu/option.py:811
+msgid "IP is not in private class"
+msgstr ""
+
+#: tiramisu/option.py:813
 msgid "invalid IP, must be in private class"
 msgstr ""
 
-#: tiramisu/option.py:814 tiramisu/option.py:989
+#: tiramisu/option.py:818 tiramisu/option.py:993
 msgid "invalid len for vals"
 msgstr ""
 
-#: tiramisu/option.py:820
+#: tiramisu/option.py:824
 msgid "IP {0} ({1}) not in network {2} ({3}) with netmask {4} ({5})"
 msgstr ""
 
-#: tiramisu/option.py:823
+#: tiramisu/option.py:827
 msgid "invalid IP {0} ({1}) not in network {2} ({3}) with netmask {4} ({5})"
 msgstr ""
 
-#: tiramisu/option.py:864
+#: tiramisu/option.py:868
 msgid "inconsistency in allowed range"
 msgstr ""
 
-#: tiramisu/option.py:869
+#: tiramisu/option.py:873
 msgid "max value is empty"
 msgstr ""
 
-#: tiramisu/option.py:886
+#: tiramisu/option.py:890
 msgid "invalid port, range must have two values only"
 msgstr ""
 
-#: tiramisu/option.py:889
+#: tiramisu/option.py:893
 msgid "invalid port, first port in range must be smaller than the second one"
 msgstr ""
 
-#: tiramisu/option.py:898
+#: tiramisu/option.py:902
 msgid "invalid port"
 msgstr ""
 
-#: tiramisu/option.py:900
+#: tiramisu/option.py:904
 msgid "invalid port, must be an between {0} and {1}"
 msgstr ""
 
-#: tiramisu/option.py:914
+#: tiramisu/option.py:918
 msgid "invalid network address"
 msgstr ""
 
-#: tiramisu/option.py:920
-msgid "network address shouldn't be in reserved class"
+#: tiramisu/option.py:924
+msgid "network address is in reserved class"
 msgstr ""
 
-#: tiramisu/option.py:922
+#: tiramisu/option.py:926
 msgid "invalid network address, mustn't be in reserved class"
 msgstr ""
 
-#: tiramisu/option.py:935
+#: tiramisu/option.py:939
 msgid "invalid netmask address"
 msgstr ""
 
-#: tiramisu/option.py:952
+#: tiramisu/option.py:956
 msgid "invalid len for opts"
 msgstr ""
 
-#: tiramisu/option.py:966
+#: tiramisu/option.py:970
 msgid "invalid IP {0} ({1}) with netmask {2}, this IP is a network"
 msgstr ""
 
-#: tiramisu/option.py:971
+#: tiramisu/option.py:975
 msgid "invalid network {0} ({1}) with netmask {2}"
 msgstr ""
 
-#: tiramisu/option.py:985
+#: tiramisu/option.py:989
 msgid "invalid broadcast address"
 msgstr ""
 
-#: tiramisu/option.py:994
+#: tiramisu/option.py:998
 msgid "invalid broadcast {0} ({1}) with network {2} ({3}) and netmask {4} ({5})"
 msgstr ""
 
-#: tiramisu/option.py:1016
+#: tiramisu/option.py:1020
 msgid "unknown type_ {0} for hostname"
 msgstr ""
 
-#: tiramisu/option.py:1019
+#: tiramisu/option.py:1023
 msgid "allow_ip must be a boolean"
 msgstr ""
 
-#: tiramisu/option.py:1021
+#: tiramisu/option.py:1025
 msgid "allow_without_dot must be a boolean"
 msgstr ""
 
-#: tiramisu/option.py:1065
+#: tiramisu/option.py:1069
 msgid "invalid domainname, must have dot"
 msgstr ""
 
-#: tiramisu/option.py:1067
+#: tiramisu/option.py:1071
 msgid "invalid domainname's length (max 255)"
 msgstr ""
 
-#: tiramisu/option.py:1069
+#: tiramisu/option.py:1073
 msgid "invalid domainname's length (min 2)"
 msgstr ""
 
-#: tiramisu/option.py:1071
+#: tiramisu/option.py:1075
 msgid "invalid domainname"
 msgstr ""
 
-#: tiramisu/option.py:1084
+#: tiramisu/option.py:1088
 msgid "invalid email address, must contains one @"
 msgstr ""
 
-#: tiramisu/option.py:1087
+#: tiramisu/option.py:1091
 msgid "invalid username in email address"
 msgstr ""
 
-#: tiramisu/option.py:1100
+#: tiramisu/option.py:1104
 msgid "invalid url, must start with http:// or https://"
 msgstr ""
 
-#: tiramisu/option.py:1119
+#: tiramisu/option.py:1123
 msgid "invalid url, port must be an between 0 and 65536"
 msgstr ""
 
-#: tiramisu/option.py:1125
+#: tiramisu/option.py:1129
 msgid "invalid url, must ends with filename"
 msgstr ""
 
-#: tiramisu/option.py:1137
+#: tiramisu/option.py:1141
 msgid "invalid username"
 msgstr ""
 
-#: tiramisu/option.py:1148
+#: tiramisu/option.py:1152
 msgid "invalid filename"
 msgstr ""
 
-#: tiramisu/option.py:1175
+#: tiramisu/option.py:1179
 msgid "duplicate option name: {0}"
 msgstr ""
 
-#: tiramisu/option.py:1193
+#: tiramisu/option.py:1197
 msgid "unknown Option {0} in OptionDescription {1}"
 msgstr ""
 
-#: tiramisu/option.py:1244
+#: tiramisu/option.py:1248
 msgid "duplicate option: {0}"
 msgstr ""
 
-#: tiramisu/option.py:1275
+#: tiramisu/option.py:1279
 msgid "consistency with option {0} which is not in Config"
 msgstr ""
 
-#: tiramisu/option.py:1283
+#: tiramisu/option.py:1287
 msgid "no option for path {0}"
 msgstr ""
 
-#: tiramisu/option.py:1289
+#: tiramisu/option.py:1293
 msgid "no option {0} found"
 msgstr ""
 
-#: tiramisu/option.py:1299
+#: tiramisu/option.py:1303
 msgid "cannot change group_type if already set (old {0}, new {1})"
 msgstr ""
 
-#: tiramisu/option.py:1311
+#: tiramisu/option.py:1315
 msgid "master group {0} shall not have a subgroup"
 msgstr ""
 
-#: tiramisu/option.py:1314
+#: tiramisu/option.py:1318
 msgid "master group {0} shall not have a symlinkoption"
 msgstr ""
 
-#: tiramisu/option.py:1317
+#: tiramisu/option.py:1321
 msgid "not allowed option {0} in group {1}: this option is not a multi"
 msgstr ""
 
-#: tiramisu/option.py:1327
+#: tiramisu/option.py:1331
 msgid "master group with wrong master name for {0}"
 msgstr ""
 
-#: tiramisu/option.py:1335
+#: tiramisu/option.py:1339
 msgid "callback of master's option shall not refered a slave's ones"
 msgstr ""
 
-#: tiramisu/option.py:1343
+#: tiramisu/option.py:1347
 msgid "group_type: {0} not allowed"
 msgstr ""
 
-#: tiramisu/option.py:1443
+#: tiramisu/option.py:1444
 msgid "malformed requirements type for option: {0}, must be a dict"
 msgstr ""
 
-#: tiramisu/option.py:1460
+#: tiramisu/option.py:1461
 msgid "malformed requirements for option: {0} require must have option, expected and action keys"
 msgstr ""
 
-#: tiramisu/option.py:1465
+#: tiramisu/option.py:1466
 msgid "malformed requirements for option: {0} inverse must be boolean"
 msgstr ""
 
-#: tiramisu/option.py:1469
+#: tiramisu/option.py:1470
 msgid "malformed requirements for option: {0} transitive must be boolean"
 msgstr ""
 
-#: tiramisu/option.py:1473
+#: tiramisu/option.py:1474
 msgid "malformed requirements for option: {0} same_action must be boolean"
 msgstr ""
 
-#: tiramisu/option.py:1477
+#: tiramisu/option.py:1478
 msgid "malformed requirements must be an option in option {0}"
 msgstr ""
 
-#: tiramisu/option.py:1480
+#: tiramisu/option.py:1481
 msgid "malformed requirements option {0} must not be a multi"
 msgstr ""
 
-#: tiramisu/option.py:1486
+#: tiramisu/option.py:1487
 msgid "malformed requirements second argument must be valid for option {0}: {1}"
 msgstr ""
 
-#: tiramisu/option.py:1491
+#: tiramisu/option.py:1492
 msgid "inconsistency in action types for option: {0} action: {1}"
 msgstr ""
 
-#: tiramisu/option.py:1516
+#: tiramisu/option.py:1517
 msgid "{0} must be a function"
 msgstr ""
 
-#: tiramisu/option.py:1519
+#: tiramisu/option.py:1520
 msgid "{0}_params must be a dict"
 msgstr ""
 
-#: tiramisu/option.py:1522
+#: tiramisu/option.py:1523
 msgid "{0}_params with key {1} mustn't have length different to 1"
 msgstr ""
 
-#: tiramisu/option.py:1526
+#: tiramisu/option.py:1527
 msgid "{0}_params must be tuple for key \"{1}\""
 msgstr ""
 
-#: tiramisu/option.py:1532
+#: tiramisu/option.py:1533
 msgid "validator not support tuple"
 msgstr ""
 
-#: tiramisu/option.py:1535
+#: tiramisu/option.py:1536
 msgid "{0}_params must have an option not a {0} for first argument"
 msgstr ""
 
-#: tiramisu/option.py:1539
+#: tiramisu/option.py:1540
 msgid "{0}_params must have a boolean not a {0} for second argument"
 msgstr ""
 
-#: tiramisu/setting.py:116
+#: tiramisu/setting.py:111
 msgid "can't rebind {0}"
 msgstr ""
 
-#: tiramisu/setting.py:121
+#: tiramisu/setting.py:116
 msgid "can't unbind {0}"
 msgstr ""
 
-#: tiramisu/setting.py:272
+#: tiramisu/setting.py:267
 msgid "cannot append {0} property for option {1}: this property is calculated"
 msgstr ""
 
-#: tiramisu/setting.py:363
+#: tiramisu/setting.py:358
 msgid "opt and all_properties must not be set together in reset"
 msgstr ""
 
-#: tiramisu/setting.py:378
+#: tiramisu/setting.py:373
 msgid "if opt is not None, path should not be None in _getproperties"
 msgstr ""
 
-#: tiramisu/setting.py:487
+#: tiramisu/setting.py:482
 msgid "cannot change the value for option {0} this option is frozen"
 msgstr ""
 
-#: tiramisu/setting.py:493
+#: tiramisu/setting.py:488
 msgid "trying to access to an option named: {0} with properties {1}"
 msgstr ""
 
-#: tiramisu/setting.py:511
+#: tiramisu/setting.py:506
 msgid "permissive must be a tuple"
 msgstr ""
 
-#: tiramisu/setting.py:518 tiramisu/value.py:334
+#: tiramisu/setting.py:513 tiramisu/value.py:332
 msgid "invalid generic owner {0}"
 msgstr ""
 
-#: tiramisu/setting.py:606
+#: tiramisu/setting.py:601
 msgid "malformed requirements imbrication detected for option: '{0}' with requirement on: '{1}'"
 msgstr ""
 
-#: tiramisu/setting.py:617
+#: tiramisu/setting.py:612
 msgid "option '{0}' has requirement's property error: {1} {2}"
 msgstr ""
 
-#: tiramisu/storage/__init__.py:52
+#: tiramisu/storage/__init__.py:47
 msgid "storage_type is already set, cannot rebind it"
 msgstr ""
 
-#: tiramisu/storage/__init__.py:86
+#: tiramisu/storage/__init__.py:81
 msgid "option {0} not already exists in storage {1}"
 msgstr ""
 
-#: tiramisu/storage/dictionary/storage.py:39
+#: tiramisu/storage/dictionary/storage.py:37
 msgid "dictionary storage cannot delete session"
 msgstr ""
 
-#: tiramisu/storage/dictionary/storage.py:50
+#: tiramisu/storage/dictionary/storage.py:48
 msgid "session already used"
 msgstr ""
 
-#: tiramisu/storage/dictionary/storage.py:52
+#: tiramisu/storage/dictionary/storage.py:50
 msgid "a dictionary cannot be persistent"
 msgstr ""
 
-#: tiramisu/value.py:341
+#: tiramisu/value.py:339
 msgid "no value for {0} cannot change owner to {1}"
 msgstr ""
 
-#: tiramisu/value.py:423
+#: tiramisu/value.py:421
 msgid "can force cache only if cache is actived in config"
 msgstr ""
 
-#: tiramisu/value.py:462
+#: tiramisu/value.py:460
 msgid "{0} is already a Multi "
 msgstr ""
 
-#: tiramisu/value.py:498 tiramisu/value.py:562
+#: tiramisu/value.py:496 tiramisu/value.py:560
 msgid "invalid len for the slave: {0} which has {1} as master"
 msgstr ""
 
-#: tiramisu/value.py:534
+#: tiramisu/value.py:532
 msgid "cannot append a value on a multi option {0} which is a slave"
 msgstr ""
 
-#: tiramisu/value.py:572
+#: tiramisu/value.py:570
 msgid "cannot sort multi option {0} if master or slave"
 msgstr ""
 
-#: tiramisu/value.py:576
+#: tiramisu/value.py:574
 msgid "cmp is not permitted in python v3 or greater"
 msgstr ""
 
-#: tiramisu/value.py:585
+#: tiramisu/value.py:583
 msgid "cannot reverse multi option {0} if master or slave"
 msgstr ""
 
-#: tiramisu/value.py:593
+#: tiramisu/value.py:591
 msgid "cannot insert multi option {0} if master or slave"
 msgstr ""
 
-#: tiramisu/value.py:601
+#: tiramisu/value.py:599
 msgid "cannot extend multi option {0} if master or slave"
 msgstr ""
 
-#: tiramisu/value.py:612
+#: tiramisu/value.py:610
 msgid "invalid value {0} for option {1}: {2}"
 msgstr ""
 
-#: tiramisu/value.py:630
+#: tiramisu/value.py:628
 msgid "cannot pop a value on a multi option {0} which is a slave"
 msgstr ""