diff --git a/ChangeLog b/ChangeLog
index b693655..f1ee976 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Fri Jul 26 09:43:03 2019 +0200 Emmanuel Garette <egarette@cadoles.com>
+	* version 3.0 rc9
+	* better todict support (especially for leadership
+	* can add display_name method to Config init to change the name a
+	option in errors
+
 Mon Jun  5 14:49:27 2019 +0200 Emmanuel Garette <egarette@cadoles.com>
 	* version 3.0 rc7
 	* retrieve metaconfig/mixconfig/config by name in a metaconfig/mixconfig
diff --git a/tiramisu/locale/fr/LC_MESSAGES/tiramisu.po b/tiramisu/locale/fr/LC_MESSAGES/tiramisu.po
index 788a53c..f215ba8 100644
--- a/tiramisu/locale/fr/LC_MESSAGES/tiramisu.po
+++ b/tiramisu/locale/fr/LC_MESSAGES/tiramisu.po
@@ -2,7 +2,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Tiramisu\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-07-06 11:27+CEST\n"
+"POT-Creation-Date: 2019-07-26 09:35+CEST\n"
 "PO-Revision-Date: \n"
 "Last-Translator: Emmanuel Garette <egarette@cadoles.com>\n"
 "Language-Team: Tiramisu's team <egarette@cadoles.com>\n"
@@ -57,39 +57,39 @@ msgstr "méthode {} inconnue dans {}"
 msgid "cannot add this property: \"{0}\""
 msgstr "ne peut pas ajouter cette propriété : \"{0}\""
 
-#: tiramisu/api.py:538 tiramisu/config.py:252
+#: tiramisu/api.py:549 tiramisu/config.py:252
 msgid "can't delete a SymLinkOption"
 msgstr "ne peut supprimer une valeur à une SymLinkOption"
 
-#: tiramisu/api.py:698 tiramisu/api.py:1470
+#: tiramisu/api.py:709 tiramisu/api.py:1487
 msgid "please specify a valid sub function ({})"
 msgstr "veuillez spécifier une sous fonction valide ({})"
 
-#: tiramisu/api.py:761 tiramisu/api.py:1247
+#: tiramisu/api.py:770 tiramisu/api.py:1264
 msgid "unknown list type {}"
 msgstr "type de liste inconnue {}"
 
-#: tiramisu/api.py:763 tiramisu/api.py:1249
+#: tiramisu/api.py:772 tiramisu/api.py:1266
 msgid "unknown group_type: {0}"
 msgstr "group_type inconnu: {0}"
 
-#: tiramisu/api.py:812 tiramisu/api.py:1279
+#: tiramisu/api.py:826 tiramisu/api.py:1296
 msgid "please use .dict() before .updates()"
 msgstr "faire .dict() avant .updates()"
 
-#: tiramisu/api.py:860
+#: tiramisu/api.py:878
 msgid "unknown config type {}"
 msgstr "type de config {} inconnue"
 
-#: tiramisu/api.py:1071
+#: tiramisu/api.py:1089
 msgid "properties must be a frozenset"
 msgstr "une propriété doit être de type frozenset"
 
-#: tiramisu/api.py:1077 tiramisu/api.py:1099
+#: tiramisu/api.py:1095 tiramisu/api.py:1117
 msgid "unknown when {} (must be in append or remove)"
 msgstr "value {}  inconsistent (doit être append ou remove)"
 
-#: tiramisu/api.py:1089 tiramisu/api.py:1111 tiramisu/config.py:1257
+#: tiramisu/api.py:1107 tiramisu/api.py:1129 tiramisu/config.py:1268
 msgid "unknown type {}"
 msgstr "type inconnu {}"
 
@@ -169,54 +169,54 @@ msgstr "make_dict ne peut filtrer sur une valeur mais sans option"
 msgid "unexpected path \"{0}\", should start with \"{1}\""
 msgstr "chemin inconsistant \"{0}\", devrait commencé par \"{1}\""
 
-#: tiramisu/config.py:668
+#: tiramisu/config.py:669
 msgid "cannot duplicate {}"
 msgstr "ne peut dupliquer : {0}"
 
-#: tiramisu/config.py:742
+#: tiramisu/config.py:748
 msgid "cannot set leadership object has root optiondescription"
 msgstr "ne peut assigner un objet leadership comme optiondescription racine"
 
-#: tiramisu/config.py:744
+#: tiramisu/config.py:750
 msgid "cannot set dynoptiondescription object has root optiondescription"
 msgstr ""
 "ne peut assigner un objet dynoptiondescription comme optiondescription racine"
 
-#: tiramisu/config.py:758 tiramisu/config.py:805
+#: tiramisu/config.py:764 tiramisu/config.py:811
 msgid "invalid session ID: {0} for config"
 msgstr "ID de session invalide : {0} pour une config"
 
-#: tiramisu/config.py:789
+#: tiramisu/config.py:795
 msgid "groupconfig's children must be a list"
 msgstr "enfants d'une groupconfig doit être une liste"
 
-#: tiramisu/config.py:793
+#: tiramisu/config.py:799
 msgid "groupconfig's children must be Config, MetaConfig or GroupConfig"
 msgstr ""
 "les enfants d'un groupconfig doivent être des Config, MetaConfig ou "
 "GroupConfig"
 
-#: tiramisu/config.py:800
+#: tiramisu/config.py:806
 msgid "config name must be uniq in groupconfig for \"{0}\""
 msgstr "le nom d'un config doit être unique dans un groupconfig pour \"{0}\""
 
-#: tiramisu/config.py:970
+#: tiramisu/config.py:976
 msgid "unknown config \"{}\""
 msgstr "config \"{}\" inconnue"
 
-#: tiramisu/config.py:995 tiramisu/config.py:1232
+#: tiramisu/config.py:1003 tiramisu/config.py:1243
 msgid "{}config's children should be config, not {}"
 msgstr "enfants d'un {}config doit être une config, pas {}"
 
-#: tiramisu/config.py:1000
+#: tiramisu/config.py:1008
 msgid "child must be a Config, MixConfig or MetaConfig"
 msgstr "l'enfant doit être une Config, MixConfig ou MetaConfig"
 
-#: tiramisu/config.py:1002
+#: tiramisu/config.py:1010
 msgid "child has already a {}config's"
 msgstr "enfant a déjà un {}config"
 
-#: tiramisu/config.py:1031
+#: tiramisu/config.py:1039
 msgid ""
 "force_default, force_default_if_same or force_dont_change_value cannot be "
 "set with only_config"
@@ -224,38 +224,38 @@ msgstr ""
 "force_default, force_default_if_same ou force_dont_change_value ne peuvent "
 "pas être spécifié avec only_config"
 
-#: tiramisu/config.py:1053
+#: tiramisu/config.py:1061
 msgid "force_default and force_dont_change_value cannot be set together"
 msgstr ""
 "force_default et force_dont_change_value ne peuvent pas être mis ensemble"
 
-#: tiramisu/config.py:1184
+#: tiramisu/config.py:1192
 msgid "config is already in a metaconfig"
 msgstr "la config est déjà dans une metaconfig"
 
-#: tiramisu/config.py:1186 tiramisu/config.py:1255
+#: tiramisu/config.py:1194 tiramisu/config.py:1266
 msgid "config name must be uniq in groupconfig for {0}"
 msgstr "le nom de la config doit être unique dans un groupconfig pour {0}"
 
-#: tiramisu/config.py:1200
+#: tiramisu/config.py:1208
 msgid "cannot find the config {}"
 msgstr "ne peut pas trouver la config {0}"
 
-#: tiramisu/config.py:1219
+#: tiramisu/config.py:1229
 msgid "MetaConfig with optiondescription must have string has child, not {}"
 msgstr ""
 "MetaConfig avec une optiondescription doit avoir un nom comme enfant, pas {}"
 
-#: tiramisu/config.py:1238
+#: tiramisu/config.py:1249
 msgid "child must be a Config or MetaConfig"
 msgstr "enfant doit être une une Config ou une MetaConfig"
 
-#: tiramisu/config.py:1242
+#: tiramisu/config.py:1253
 msgid "all config in metaconfig must have the same optiondescription"
 msgstr ""
 "toutes les configs d'une metaconfig doivent avoir la même optiondescription"
 
-#: tiramisu/config.py:1290
+#: tiramisu/config.py:1304
 msgid "metaconfig must have the same optiondescription"
 msgstr "metaconfig doivent avoir la même optiondescription"
 
@@ -378,11 +378,11 @@ msgstr "\"{}\" ({}) l'attribut de l'objet \"{}\" est en lecture seule"
 msgid "\"{}\" not part of any Config"
 msgstr "\"{}\" ne fait pas parti d'une Config"
 
-#: tiramisu/option/baseoption.py:453
+#: tiramisu/option/baseoption.py:459
 msgid "malformed requirements must be an option in option {0}"
 msgstr "requirements mal formés doit être une option dans l'option {0}"
 
-#: tiramisu/option/baseoption.py:456
+#: tiramisu/option/baseoption.py:462
 msgid ""
 "malformed requirements multi option must not set as requires of non multi "
 "option {0}"
@@ -390,59 +390,59 @@ msgstr ""
 "requirements mal formés une option multiple ne doit pas être spécifié comme "
 "pré-requis à l'option non multiple {0}"
 
-#: tiramisu/option/baseoption.py:495
+#: tiramisu/option/baseoption.py:501
 msgid ""
 "malformed requirements expected must have option and value for option {0}"
 msgstr ""
 "expected mal formés pour le requirements, doit avoir une option et une "
 "valeur pour l'option {0}"
 
-#: tiramisu/option/baseoption.py:502 tiramisu/option/baseoption.py:518
+#: tiramisu/option/baseoption.py:508 tiramisu/option/baseoption.py:524
 msgid "malformed requirements expected value must be valid for option {0}: {1}"
 msgstr ""
 "valeur de \"expected\" malformé, doit être valide pour l'option {0} : {1}"
 
-#: tiramisu/option/baseoption.py:532
+#: tiramisu/option/baseoption.py:538
 msgid ""
 "malformed requirements for option: {0} action cannot be force_store_value"
 msgstr ""
 "requirements mal formés pour l'option : {0} action ne peut pas être "
 "force_store_value"
 
-#: tiramisu/option/baseoption.py:540
+#: tiramisu/option/baseoption.py:546
 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/baseoption.py:547
+#: tiramisu/option/baseoption.py:553
 msgid "malformed requirements for option: {0} transitive must be boolean"
 msgstr ""
 "requirements mal formés pour l'option : {0} transitive doit être booléen"
 
-#: tiramisu/option/baseoption.py:554
+#: tiramisu/option/baseoption.py:560
 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/baseoption.py:561
+#: tiramisu/option/baseoption.py:567
 msgid ""
 "malformed requirements for option: \"{0}\" operator must be \"or\" or \"and\""
 msgstr ""
 "requirements mal formés pour l'option : \"{0}\" l'opérateur doit être \"or\" "
 "ou \"and\""
 
-#: tiramisu/option/baseoption.py:574
+#: tiramisu/option/baseoption.py:580
 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/baseoption.py:580
+#: tiramisu/option/baseoption.py:586
 msgid "malformed requirements for option: {0} unknown keys {1}, must only {2}"
 msgstr ""
 "requirements mal formés pour l'option : {0} clefs inconnues {1}, doit "
 "seulement avoir {2}"
 
-#: tiramisu/option/baseoption.py:592
+#: tiramisu/option/baseoption.py:598
 msgid ""
 "malformed requirements for option: {0} require must have option, expected "
 "and action keys"
@@ -459,7 +459,7 @@ msgid "broadcast address"
 msgstr "adresse de broadcast"
 
 #: tiramisu/option/broadcastoption.py:39 tiramisu/option/dateoption.py:38
-#: tiramisu/option/domainnameoption.py:118 tiramisu/option/ipoption.py:83
+#: tiramisu/option/domainnameoption.py:126 tiramisu/option/ipoption.py:83
 #: tiramisu/option/netmaskoption.py:42 tiramisu/option/networkoption.py:68
 #: tiramisu/option/passwordoption.py:39 tiramisu/option/portoption.py:107
 #: tiramisu/option/urloption.py:41
@@ -520,34 +520,55 @@ msgstr "allow_ip doit être un booléen"
 msgid "allow_without_dot must be a boolean"
 msgstr "allow_without_dot doit être un booléen"
 
-#: tiramisu/option/domainnameoption.py:112
+#: tiramisu/option/domainnameoption.py:73
+msgid "only lowercase, number, \"-\" and \".\" are characters are allowed"
+msgstr ""
+"seuls les caractères en minuscule, les nombres, \"-\" et \".\" sont autorisés"
+
+#: tiramisu/option/domainnameoption.py:74
+msgid "only lowercase, number, \"-\" and \".\" are characters are recommanded"
+msgstr ""
+"seuls les caractères en minuscule, les nombres, \"-\" et \".\" sont "
+"recommandés"
+
+#: tiramisu/option/domainnameoption.py:77
+msgid "only lowercase, number and - are characters are allowed"
+msgstr "seuls les caractères en minuscule, les nombres et \"-\" sont autorisés"
+
+#: tiramisu/option/domainnameoption.py:78
+msgid "only lowercase, number and \"-\" are characters are recommanded"
+msgstr ""
+"seuls les caractères en minuscule, les nombres et \"-\" sont recommandés"
+
+#: tiramisu/option/domainnameoption.py:80
+#: tiramisu/option/domainnameoption.py:81
+msgid "could be a IP, otherwise {}"
+msgstr "peut être une IP, autrement {}"
+
+#: tiramisu/option/domainnameoption.py:120
 msgid "invalid length (min 1)"
 msgstr "longueur invalide (min 1)"
 
-#: tiramisu/option/domainnameoption.py:114
+#: tiramisu/option/domainnameoption.py:122
 msgid "invalid length (max {0})"
 msgstr "longueur invalide (max {0})"
 
-#: tiramisu/option/domainnameoption.py:125
+#: tiramisu/option/domainnameoption.py:133
 msgid "must not be an IP"
 msgstr "ne doit pas être une IP"
 
-#: tiramisu/option/domainnameoption.py:131
+#: tiramisu/option/domainnameoption.py:139
 msgid "must have dot"
 msgstr "doit avec un point"
 
-#: tiramisu/option/domainnameoption.py:133
+#: tiramisu/option/domainnameoption.py:141
 msgid "invalid length (max 255)"
 msgstr "longueur invalide (max 255)"
 
-#: tiramisu/option/domainnameoption.py:141
+#: tiramisu/option/domainnameoption.py:149
 msgid "some characters are uppercase"
 msgstr "des caractères sont en majuscule"
 
-#: tiramisu/option/domainnameoption.py:144
-msgid "some characters may cause problems"
-msgstr "des caractères peuvent poser problèmes"
-
 #: tiramisu/option/dynoptiondescription.py:56
 msgid "cannot set optiondescription in a dynoptiondescription"
 msgstr "ne peut mettre une optiondescription dans une dynoptiondescription"
@@ -625,16 +646,32 @@ msgid "must be private IP"
 msgstr "doit être une IP privée"
 
 #: tiramisu/option/ipoption.py:147
-msgid "\"{0}\" is not in network \"{1}\" (\"{2}\")"
-msgstr "\"{0}\" n'est pas dans le réseau \"{1}\" (\"{2}\")"
+msgid "IP not in network \"{0}\" (\"{1}\")"
+msgstr "l'IP n'est pas dans le réseau \"{0}\" (\"{1}\")"
 
-#: tiramisu/option/ipoption.py:163
+#: tiramisu/option/ipoption.py:162
 msgid "ip_network needs an IP, a network and a netmask"
 msgstr "ip_network nécessite une IP, un réseau et un masque de réseau"
 
 #: tiramisu/option/ipoption.py:169
-msgid "\"{4}\" is not in network \"{0}\"/\"{1}\" (\"{2}\"/\"{3}\")"
-msgstr "\"{4}\" n'est pas dans le réseau \"{0}\"/\"{1}\" (\"{2}\"/\"{3}\")"
+msgid "IP not in network \"{2}\"/\"{4}\" (\"{3}\"/\"{5}\")"
+msgstr "l'IP n'est pas dans le réseau \"{2}\"/\"{4}\" (\"{3}\"/\"{5}\")"
+
+#: tiramisu/option/ipoption.py:171
+msgid ""
+"the network doest not match with IP \"{0}\" (\"{1}\") and network "
+"\"{4}\" (\"{5}\")"
+msgstr ""
+"le réseau ne correspond pas à l'IP \"{0}\" (\"{1}\") et au réseau "
+"\"{4}\" (\"{5}\")"
+
+#: tiramisu/option/ipoption.py:173
+msgid ""
+"the netmask does not match with IP \"{0}\" (\"{1}\") and broadcast "
+"\"{2}\" (\"{3}\")"
+msgstr ""
+"le masque de réseau ne correspond pas à l'IP \"{0}\" (\"{1}\") et au "
+"broadcast \"{2}\" (\"{3}\")"
 
 #: tiramisu/option/leadership.py:57
 msgid "a leader and a follower are mandatories in leadership \"{}\""
@@ -692,12 +729,12 @@ msgid "network_netmask needs a network and a netmask"
 msgstr "network_netmask nécessite un réseau et un masque de réseau"
 
 #: tiramisu/option/netmaskoption.py:69
-msgid "with netmask \"{0}\" (\"{1}\")"
-msgstr "avec le masque \"{0}\" (\"{1}\")"
+msgid "the netmask \"{0}\" (\"{1}\") does not match"
+msgstr "le masque \"{0}\" (\"{1}\") ne correspond pas"
 
 #: tiramisu/option/netmaskoption.py:72
-msgid "with network \"{0}\" (\"{1}\")"
-msgstr "avec le réseau \"{0}\" (\"{1}\")"
+msgid "the network \"{0}\" (\"{1}\") does not match"
+msgstr "le réseau \"{0}\" (\"{1}\") ne correspond pas"
 
 #: tiramisu/option/netmaskoption.py:83
 msgid "ip_netmask needs an IP and a netmask"
@@ -846,22 +883,22 @@ msgstr "valeur pour {} devrait être différent"
 msgid "value for {} must be different"
 msgstr "valeur pour {} doit être différent"
 
-#: tiramisu/option/optiondescription.py:62
-#: tiramisu/option/optiondescription.py:177
+#: tiramisu/option/optiondescription.py:63
+#: tiramisu/option/optiondescription.py:181
 msgid "option description seems to be part of an other config"
 msgstr "l'option description semble faire parti d'une autre config"
 
-#: tiramisu/option/optiondescription.py:85
+#: tiramisu/option/optiondescription.py:87
 msgid "the follower \"{0}\" cannot have \"force_store_value\" property"
 msgstr ""
 "l'option suiveuse \"{0}\" ne doit pas avoir la propriété \"force_store_value"
 "\""
 
-#: tiramisu/option/optiondescription.py:89
+#: tiramisu/option/optiondescription.py:91
 msgid "the dynoption \"{0}\" cannot have \"force_store_value\" property"
 msgstr "la dynoption \"{0}\" ne peut avoir la propriété \"force_store_value\""
 
-#: tiramisu/option/optiondescription.py:97 tiramisu/setting.py:687
+#: tiramisu/option/optiondescription.py:99 tiramisu/setting.py:687
 msgid ""
 "a leader ({0}) cannot have \"force_default_on_freeze\" or "
 "\"force_metaconfig_on_freeze\" property without \"frozen\""
@@ -869,70 +906,70 @@ msgstr ""
 "une option leader ({0}) ne peut avoir de propriété \"force_default_on_freeze"
 "\" sans \"frozen\""
 
-#: tiramisu/option/optiondescription.py:106
+#: tiramisu/option/optiondescription.py:108
 msgid "malformed consistency option \"{0}\" must be in same leadership"
 msgstr ""
 "test de consistance mal formé pour l'option \"{0}\" doit être dans la même "
 "option leadership"
 
-#: tiramisu/option/optiondescription.py:114
+#: tiramisu/option/optiondescription.py:116
 msgid "malformed consistency option \"{0}\" must not be a multi for \"{1}\""
 msgstr ""
 "test de consistence mal formé pour l'option \"{0}\" ne doit doit pas être "
 "une liste pour \"{1}\""
 
-#: tiramisu/option/optiondescription.py:118
+#: tiramisu/option/optiondescription.py:120
 msgid ""
 "malformed consistency option \"{0}\" must be in same leadership as \"{1}\""
 msgstr ""
 "test de consistance mal formé pour l'option \"{0}\" doit être dans la même "
 "option leadership que \"{1}\""
 
-#: tiramisu/option/optiondescription.py:149
+#: tiramisu/option/optiondescription.py:151
 msgid ""
 "malformed requirements option \"{0}\" must be in same leadership for \"{1}\""
 msgstr ""
 "requirements mal formé pour l'option \"{0}\" doit être dans la même option "
 "leadership que \"{1}\""
 
-#: tiramisu/option/optiondescription.py:153
+#: tiramisu/option/optiondescription.py:155
 msgid "malformed requirements option \"{0}\" must not be a multi for \"{1}\""
 msgstr ""
 "requirement mal formés pour l'option \"{0}\" ne doit pas être une valeur "
 "multiple pour \"{1}\""
 
-#: tiramisu/option/optiondescription.py:157
+#: tiramisu/option/optiondescription.py:159
 msgid "duplicate option: {0}"
 msgstr "option dupliquée : {0}"
 
-#: tiramisu/option/optiondescription.py:166
+#: tiramisu/option/optiondescription.py:170
 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/optiondescription.py:221
+#: tiramisu/option/optiondescription.py:225
 msgid "unknown option \"{0}\" in optiondescription \"{1}\""
 msgstr "option \"{0}\" inconnue dans l'optiondescription \"{1}\""
 
-#: tiramisu/option/optiondescription.py:275
+#: tiramisu/option/optiondescription.py:279
 msgid "children in optiondescription \"{}\" must be a list"
 msgstr "les enfants d'une optiondescription \"{}\" doit être une liste"
 
-#: tiramisu/option/optiondescription.py:299
+#: tiramisu/option/optiondescription.py:303
 msgid "duplicate option name: \"{0}\""
 msgstr "nom de l'option dupliqué : \"{0}\""
 
-#: tiramisu/option/optiondescription.py:304
+#: tiramisu/option/optiondescription.py:308
 msgid ""
 "the option's name \"{}\" start as the dynoptiondescription's name \"{}\""
 msgstr ""
 "le nom de l'option \"{}\" commence comme le nom du dynoptiondescription "
 "\"{}\""
 
-#: tiramisu/option/optiondescription.py:329
+#: tiramisu/option/optiondescription.py:333
 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/optiondescription.py:333
+#: tiramisu/option/optiondescription.py:337
 msgid "group_type: {0} not allowed"
 msgstr "group_type : {0} non autorisé"
 
@@ -1095,51 +1132,57 @@ msgstr "ne peut supprimer une session non persistante"
 msgid "cannot change setting when connexion is already opened"
 msgstr "ne peut changer les paramètres quand une connexion est déjà ouverte"
 
-#: tiramisu/todict.py:66 tiramisu/todict.py:562
+#: tiramisu/todict.py:67 tiramisu/todict.py:563
 msgid "context is not supported from now for {}"
 msgstr "context n'est pas supporté maintenant pour {}"
 
-#: tiramisu/todict.py:344
+#: tiramisu/todict.py:345
 msgid "option {} only works when remotable is not \"none\""
 msgstr "l'option {} ne fonctionne que si remotable n'est pas \"none\""
 
-#: tiramisu/todict.py:488
+#: tiramisu/todict.py:489
 msgid "unable to transform tiramisu object to dict: {}"
 msgstr "impossible de transformer l'objet tiramisu en dict : {}"
 
-#: tiramisu/todict.py:785 tiramisu/todict.py:917
+#: tiramisu/todict.py:794 tiramisu/todict.py:926
 msgid "unknown form {}"
 msgstr "form {} inconnu"
 
-#: tiramisu/todict.py:830
+#: tiramisu/todict.py:839
 msgid "not in current area"
 msgstr "n'est pas dans l'espace courant"
 
-#: tiramisu/todict.py:850
+#: tiramisu/todict.py:859
 msgid "only multi option can have action \"add\", but \"{}\" is not a multi"
 msgstr ""
 "seules des options multiples peuvent avoir l'action \"add\", mais \"{}\" "
 "n'est pas une valeur multiple"
 
-#: tiramisu/todict.py:852
+#: tiramisu/todict.py:861
 msgid "unknown action"
 msgstr "action inconnue"
 
-#: tiramisu/value.py:427
+#: tiramisu/value.py:428
 msgid "can't set owner for the symlinkoption \"{}\""
 msgstr "ne peut spécifier d'utilisateur à la symlinkoption \"{}\""
 
-#: tiramisu/value.py:430 tiramisu/value.py:644
+#: tiramisu/value.py:431 tiramisu/value.py:641
 msgid "set owner \"{0}\" is forbidden"
 msgstr "assigner l'utilisateur \"{0}\" est interdit"
 
-#: tiramisu/value.py:433
+#: tiramisu/value.py:434
 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:511
+#: tiramisu/value.py:512
 msgid "index {} is greater than the length {} for option \"{}\""
 msgstr "l'index {} est supérieur à la longueur \"{}\" pour l'option \"{}\""
 
+#~ msgid "some characters may cause problems"
+#~ msgstr "des caractères peuvent poser problèmes"
+
+#~ msgid "\"{0}\" is not in network \"{1}\" (\"{2}\")"
+#~ msgstr "\"{0}\" n'est pas dans le réseau \"{1}\" (\"{2}\")"
+
 #~ msgid "invalid len for vals"
 #~ msgstr "longueur invalide pour vals"
diff --git a/tiramisu/locale/tiramisu.pot b/tiramisu/locale/tiramisu.pot
index c19c356..e1db416 100644
--- a/tiramisu/locale/tiramisu.pot
+++ b/tiramisu/locale/tiramisu.pot
@@ -5,7 +5,7 @@
 msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
-"POT-Creation-Date: 2019-07-06 11:27+CEST\n"
+"POT-Creation-Date: 2019-07-26 09:35+CEST\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"
@@ -55,39 +55,39 @@ msgstr ""
 msgid "cannot add this property: \"{0}\""
 msgstr ""
 
-#: tiramisu/api.py:538 tiramisu/config.py:252
+#: tiramisu/api.py:549 tiramisu/config.py:252
 msgid "can't delete a SymLinkOption"
 msgstr ""
 
-#: tiramisu/api.py:698 tiramisu/api.py:1470
+#: tiramisu/api.py:709 tiramisu/api.py:1487
 msgid "please specify a valid sub function ({})"
 msgstr ""
 
-#: tiramisu/api.py:761 tiramisu/api.py:1247
+#: tiramisu/api.py:770 tiramisu/api.py:1264
 msgid "unknown list type {}"
 msgstr ""
 
-#: tiramisu/api.py:763 tiramisu/api.py:1249
+#: tiramisu/api.py:772 tiramisu/api.py:1266
 msgid "unknown group_type: {0}"
 msgstr ""
 
-#: tiramisu/api.py:812 tiramisu/api.py:1279
+#: tiramisu/api.py:826 tiramisu/api.py:1296
 msgid "please use .dict() before .updates()"
 msgstr ""
 
-#: tiramisu/api.py:860
+#: tiramisu/api.py:878
 msgid "unknown config type {}"
 msgstr ""
 
-#: tiramisu/api.py:1071
+#: tiramisu/api.py:1089
 msgid "properties must be a frozenset"
 msgstr ""
 
-#: tiramisu/api.py:1077 tiramisu/api.py:1099
+#: tiramisu/api.py:1095 tiramisu/api.py:1117
 msgid "unknown when {} (must be in append or remove)"
 msgstr ""
 
-#: tiramisu/api.py:1089 tiramisu/api.py:1111 tiramisu/config.py:1257
+#: tiramisu/api.py:1107 tiramisu/api.py:1129 tiramisu/config.py:1268
 msgid "unknown type {}"
 msgstr ""
 
@@ -147,83 +147,83 @@ msgstr ""
 msgid "unexpected path \"{0}\", should start with \"{1}\""
 msgstr ""
 
-#: tiramisu/config.py:668
+#: tiramisu/config.py:669
 msgid "cannot duplicate {}"
 msgstr ""
 
-#: tiramisu/config.py:742
+#: tiramisu/config.py:748
 msgid "cannot set leadership object has root optiondescription"
 msgstr ""
 
-#: tiramisu/config.py:744
+#: tiramisu/config.py:750
 msgid "cannot set dynoptiondescription object has root optiondescription"
 msgstr ""
 
-#: tiramisu/config.py:758 tiramisu/config.py:805
+#: tiramisu/config.py:764 tiramisu/config.py:811
 msgid "invalid session ID: {0} for config"
 msgstr ""
 
-#: tiramisu/config.py:789
+#: tiramisu/config.py:795
 msgid "groupconfig's children must be a list"
 msgstr ""
 
-#: tiramisu/config.py:793
+#: tiramisu/config.py:799
 msgid "groupconfig's children must be Config, MetaConfig or GroupConfig"
 msgstr ""
 
-#: tiramisu/config.py:800
+#: tiramisu/config.py:806
 msgid "config name must be uniq in groupconfig for \"{0}\""
 msgstr ""
 
-#: tiramisu/config.py:970
+#: tiramisu/config.py:976
 msgid "unknown config \"{}\""
 msgstr ""
 
-#: tiramisu/config.py:995 tiramisu/config.py:1232
+#: tiramisu/config.py:1003 tiramisu/config.py:1243
 msgid "{}config's children should be config, not {}"
 msgstr ""
 
-#: tiramisu/config.py:1000
+#: tiramisu/config.py:1008
 msgid "child must be a Config, MixConfig or MetaConfig"
 msgstr ""
 
-#: tiramisu/config.py:1002
+#: tiramisu/config.py:1010
 msgid "child has already a {}config's"
 msgstr ""
 
-#: tiramisu/config.py:1031
+#: tiramisu/config.py:1039
 msgid "force_default, force_default_if_same or force_dont_change_value cannot be set with only_config"
 msgstr ""
 
-#: tiramisu/config.py:1053
+#: tiramisu/config.py:1061
 msgid "force_default and force_dont_change_value cannot be set together"
 msgstr ""
 
-#: tiramisu/config.py:1184
+#: tiramisu/config.py:1192
 msgid "config is already in a metaconfig"
 msgstr ""
 
-#: tiramisu/config.py:1186 tiramisu/config.py:1255
+#: tiramisu/config.py:1194 tiramisu/config.py:1266
 msgid "config name must be uniq in groupconfig for {0}"
 msgstr ""
 
-#: tiramisu/config.py:1200
+#: tiramisu/config.py:1208
 msgid "cannot find the config {}"
 msgstr ""
 
-#: tiramisu/config.py:1219
+#: tiramisu/config.py:1229
 msgid "MetaConfig with optiondescription must have string has child, not {}"
 msgstr ""
 
-#: tiramisu/config.py:1238
+#: tiramisu/config.py:1249
 msgid "child must be a Config or MetaConfig"
 msgstr ""
 
-#: tiramisu/config.py:1242
+#: tiramisu/config.py:1253
 msgid "all config in metaconfig must have the same optiondescription"
 msgstr ""
 
-#: tiramisu/config.py:1290
+#: tiramisu/config.py:1304
 msgid "metaconfig must have the same optiondescription"
 msgstr ""
 
@@ -340,51 +340,51 @@ msgstr ""
 msgid "\"{}\" not part of any Config"
 msgstr ""
 
-#: tiramisu/option/baseoption.py:453
+#: tiramisu/option/baseoption.py:459
 msgid "malformed requirements must be an option in option {0}"
 msgstr ""
 
-#: tiramisu/option/baseoption.py:456
+#: tiramisu/option/baseoption.py:462
 msgid "malformed requirements multi option must not set as requires of non multi option {0}"
 msgstr ""
 
-#: tiramisu/option/baseoption.py:495
+#: tiramisu/option/baseoption.py:501
 msgid "malformed requirements expected must have option and value for option {0}"
 msgstr ""
 
-#: tiramisu/option/baseoption.py:502 tiramisu/option/baseoption.py:518
+#: tiramisu/option/baseoption.py:508 tiramisu/option/baseoption.py:524
 msgid "malformed requirements expected value must be valid for option {0}: {1}"
 msgstr ""
 
-#: tiramisu/option/baseoption.py:532
+#: tiramisu/option/baseoption.py:538
 msgid "malformed requirements for option: {0} action cannot be force_store_value"
 msgstr ""
 
-#: tiramisu/option/baseoption.py:540
+#: tiramisu/option/baseoption.py:546
 msgid "malformed requirements for option: {0} inverse must be boolean"
 msgstr ""
 
-#: tiramisu/option/baseoption.py:547
+#: tiramisu/option/baseoption.py:553
 msgid "malformed requirements for option: {0} transitive must be boolean"
 msgstr ""
 
-#: tiramisu/option/baseoption.py:554
+#: tiramisu/option/baseoption.py:560
 msgid "malformed requirements for option: {0} same_action must be boolean"
 msgstr ""
 
-#: tiramisu/option/baseoption.py:561
+#: tiramisu/option/baseoption.py:567
 msgid "malformed requirements for option: \"{0}\" operator must be \"or\" or \"and\""
 msgstr ""
 
-#: tiramisu/option/baseoption.py:574
+#: tiramisu/option/baseoption.py:580
 msgid "malformed requirements type for option: {0}, must be a dict"
 msgstr ""
 
-#: tiramisu/option/baseoption.py:580
+#: tiramisu/option/baseoption.py:586
 msgid "malformed requirements for option: {0} unknown keys {1}, must only {2}"
 msgstr ""
 
-#: tiramisu/option/baseoption.py:592
+#: tiramisu/option/baseoption.py:598
 msgid "malformed requirements for option: {0} require must have option, expected and action keys"
 msgstr ""
 
@@ -397,7 +397,7 @@ msgid "broadcast address"
 msgstr ""
 
 #: tiramisu/option/broadcastoption.py:39 tiramisu/option/dateoption.py:38
-#: tiramisu/option/domainnameoption.py:118 tiramisu/option/ipoption.py:83
+#: tiramisu/option/domainnameoption.py:126 tiramisu/option/ipoption.py:83
 #: tiramisu/option/netmaskoption.py:42 tiramisu/option/networkoption.py:68
 #: tiramisu/option/passwordoption.py:39 tiramisu/option/portoption.py:107
 #: tiramisu/option/urloption.py:41
@@ -456,34 +456,51 @@ msgstr ""
 msgid "allow_without_dot must be a boolean"
 msgstr ""
 
-#: tiramisu/option/domainnameoption.py:112
+#: tiramisu/option/domainnameoption.py:73
+msgid "only lowercase, number, \"-\" and \".\" are characters are allowed"
+msgstr ""
+
+#: tiramisu/option/domainnameoption.py:74
+msgid "only lowercase, number, \"-\" and \".\" are characters are recommanded"
+msgstr ""
+
+#: tiramisu/option/domainnameoption.py:77
+msgid "only lowercase, number and - are characters are allowed"
+msgstr ""
+
+#: tiramisu/option/domainnameoption.py:78
+msgid "only lowercase, number and \"-\" are characters are recommanded"
+msgstr ""
+
+#: tiramisu/option/domainnameoption.py:80
+#: tiramisu/option/domainnameoption.py:81
+msgid "could be a IP, otherwise {}"
+msgstr ""
+
+#: tiramisu/option/domainnameoption.py:120
 msgid "invalid length (min 1)"
 msgstr ""
 
-#: tiramisu/option/domainnameoption.py:114
+#: tiramisu/option/domainnameoption.py:122
 msgid "invalid length (max {0})"
 msgstr ""
 
-#: tiramisu/option/domainnameoption.py:125
+#: tiramisu/option/domainnameoption.py:133
 msgid "must not be an IP"
 msgstr ""
 
-#: tiramisu/option/domainnameoption.py:131
+#: tiramisu/option/domainnameoption.py:139
 msgid "must have dot"
 msgstr ""
 
-#: tiramisu/option/domainnameoption.py:133
+#: tiramisu/option/domainnameoption.py:141
 msgid "invalid length (max 255)"
 msgstr ""
 
-#: tiramisu/option/domainnameoption.py:141
+#: tiramisu/option/domainnameoption.py:149
 msgid "some characters are uppercase"
 msgstr ""
 
-#: tiramisu/option/domainnameoption.py:144
-msgid "some characters may cause problems"
-msgstr ""
-
 #: tiramisu/option/dynoptiondescription.py:56
 msgid "cannot set optiondescription in a dynoptiondescription"
 msgstr ""
@@ -557,15 +574,23 @@ msgid "must be private IP"
 msgstr ""
 
 #: tiramisu/option/ipoption.py:147
-msgid "\"{0}\" is not in network \"{1}\" (\"{2}\")"
+msgid "IP not in network \"{0}\" (\"{1}\")"
 msgstr ""
 
-#: tiramisu/option/ipoption.py:163
+#: tiramisu/option/ipoption.py:162
 msgid "ip_network needs an IP, a network and a netmask"
 msgstr ""
 
 #: tiramisu/option/ipoption.py:169
-msgid "\"{4}\" is not in network \"{0}\"/\"{1}\" (\"{2}\"/\"{3}\")"
+msgid "IP not in network \"{2}\"/\"{4}\" (\"{3}\"/\"{5}\")"
+msgstr ""
+
+#: tiramisu/option/ipoption.py:171
+msgid "the network doest not match with IP \"{0}\" (\"{1}\") and network \"{4}\" (\"{5}\")"
+msgstr ""
+
+#: tiramisu/option/ipoption.py:173
+msgid "the netmask does not match with IP \"{0}\" (\"{1}\") and broadcast \"{2}\" (\"{3}\")"
 msgstr ""
 
 #: tiramisu/option/leadership.py:57
@@ -609,11 +634,11 @@ msgid "network_netmask needs a network and a netmask"
 msgstr ""
 
 #: tiramisu/option/netmaskoption.py:69
-msgid "with netmask \"{0}\" (\"{1}\")"
+msgid "the netmask \"{0}\" (\"{1}\") does not match"
 msgstr ""
 
 #: tiramisu/option/netmaskoption.py:72
-msgid "with network \"{0}\" (\"{1}\")"
+msgid "the network \"{0}\" (\"{1}\") does not match"
 msgstr ""
 
 #: tiramisu/option/netmaskoption.py:83
@@ -748,72 +773,72 @@ msgstr ""
 msgid "value for {} must be different"
 msgstr ""
 
-#: tiramisu/option/optiondescription.py:62
-#: tiramisu/option/optiondescription.py:177
+#: tiramisu/option/optiondescription.py:63
+#: tiramisu/option/optiondescription.py:181
 msgid "option description seems to be part of an other config"
 msgstr ""
 
-#: tiramisu/option/optiondescription.py:85
+#: tiramisu/option/optiondescription.py:87
 msgid "the follower \"{0}\" cannot have \"force_store_value\" property"
 msgstr ""
 
-#: tiramisu/option/optiondescription.py:89
+#: tiramisu/option/optiondescription.py:91
 msgid "the dynoption \"{0}\" cannot have \"force_store_value\" property"
 msgstr ""
 
-#: tiramisu/option/optiondescription.py:97 tiramisu/setting.py:687
+#: tiramisu/option/optiondescription.py:99 tiramisu/setting.py:687
 msgid "a leader ({0}) cannot have \"force_default_on_freeze\" or \"force_metaconfig_on_freeze\" property without \"frozen\""
 msgstr ""
 
-#: tiramisu/option/optiondescription.py:106
+#: tiramisu/option/optiondescription.py:108
 msgid "malformed consistency option \"{0}\" must be in same leadership"
 msgstr ""
 
-#: tiramisu/option/optiondescription.py:114
+#: tiramisu/option/optiondescription.py:116
 msgid "malformed consistency option \"{0}\" must not be a multi for \"{1}\""
 msgstr ""
 
-#: tiramisu/option/optiondescription.py:118
+#: tiramisu/option/optiondescription.py:120
 msgid "malformed consistency option \"{0}\" must be in same leadership as \"{1}\""
 msgstr ""
 
-#: tiramisu/option/optiondescription.py:149
+#: tiramisu/option/optiondescription.py:151
 msgid "malformed requirements option \"{0}\" must be in same leadership for \"{1}\""
 msgstr ""
 
-#: tiramisu/option/optiondescription.py:153
+#: tiramisu/option/optiondescription.py:155
 msgid "malformed requirements option \"{0}\" must not be a multi for \"{1}\""
 msgstr ""
 
-#: tiramisu/option/optiondescription.py:157
+#: tiramisu/option/optiondescription.py:159
 msgid "duplicate option: {0}"
 msgstr ""
 
-#: tiramisu/option/optiondescription.py:166
+#: tiramisu/option/optiondescription.py:170
 msgid "consistency with option {0} which is not in Config"
 msgstr ""
 
-#: tiramisu/option/optiondescription.py:221
+#: tiramisu/option/optiondescription.py:225
 msgid "unknown option \"{0}\" in optiondescription \"{1}\""
 msgstr ""
 
-#: tiramisu/option/optiondescription.py:275
+#: tiramisu/option/optiondescription.py:279
 msgid "children in optiondescription \"{}\" must be a list"
 msgstr ""
 
-#: tiramisu/option/optiondescription.py:299
+#: tiramisu/option/optiondescription.py:303
 msgid "duplicate option name: \"{0}\""
 msgstr ""
 
-#: tiramisu/option/optiondescription.py:304
+#: tiramisu/option/optiondescription.py:308
 msgid "the option's name \"{}\" start as the dynoptiondescription's name \"{}\""
 msgstr ""
 
-#: tiramisu/option/optiondescription.py:329
+#: tiramisu/option/optiondescription.py:333
 msgid "cannot change group_type if already set (old {0}, new {1})"
 msgstr ""
 
-#: tiramisu/option/optiondescription.py:333
+#: tiramisu/option/optiondescription.py:337
 msgid "group_type: {0} not allowed"
 msgstr ""
 
@@ -967,47 +992,47 @@ msgstr ""
 msgid "cannot change setting when connexion is already opened"
 msgstr ""
 
-#: tiramisu/todict.py:66 tiramisu/todict.py:562
+#: tiramisu/todict.py:67 tiramisu/todict.py:563
 msgid "context is not supported from now for {}"
 msgstr ""
 
-#: tiramisu/todict.py:344
+#: tiramisu/todict.py:345
 msgid "option {} only works when remotable is not \"none\""
 msgstr ""
 
-#: tiramisu/todict.py:488
+#: tiramisu/todict.py:489
 msgid "unable to transform tiramisu object to dict: {}"
 msgstr ""
 
-#: tiramisu/todict.py:785 tiramisu/todict.py:917
+#: tiramisu/todict.py:794 tiramisu/todict.py:926
 msgid "unknown form {}"
 msgstr ""
 
-#: tiramisu/todict.py:830
+#: tiramisu/todict.py:839
 msgid "not in current area"
 msgstr ""
 
-#: tiramisu/todict.py:850
+#: tiramisu/todict.py:859
 msgid "only multi option can have action \"add\", but \"{}\" is not a multi"
 msgstr ""
 
-#: tiramisu/todict.py:852
+#: tiramisu/todict.py:861
 msgid "unknown action"
 msgstr ""
 
-#: tiramisu/value.py:427
+#: tiramisu/value.py:428
 msgid "can't set owner for the symlinkoption \"{}\""
 msgstr ""
 
-#: tiramisu/value.py:430 tiramisu/value.py:644
+#: tiramisu/value.py:431 tiramisu/value.py:641
 msgid "set owner \"{0}\" is forbidden"
 msgstr ""
 
-#: tiramisu/value.py:433
+#: tiramisu/value.py:434
 msgid "no value for {0} cannot change owner to {1}"
 msgstr ""
 
-#: tiramisu/value.py:511
+#: tiramisu/value.py:512
 msgid "index {} is greater than the length {} for option \"{}\""
 msgstr ""