diff --git a/machines/forms.py b/machines/forms.py
index 3512e277..dedd8395 100644
--- a/machines/forms.py
+++ b/machines/forms.py
@@ -143,7 +143,8 @@ class DelMachineTypeForm(Form):
 class IpTypeForm(ModelForm):
     class Meta:
         model = IpType
-        fields = ['type','extension','need_infra','domaine_ip','domaine_range', 'vlan']
+        fields = ['type','extension','need_infra','domaine_ip_start','domaine_ip_stop', 'vlan']
+        
 
     def __init__(self, *args, **kwargs):
         super(IpTypeForm, self).__init__(*args, **kwargs)
diff --git a/machines/migrations/0052_auto_20170828_2322.py b/machines/migrations/0052_auto_20170828_2322.py
new file mode 100644
index 00000000..b8ab65ca
--- /dev/null
+++ b/machines/migrations/0052_auto_20170828_2322.py
@@ -0,0 +1,30 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.7 on 2017-08-28 21:22
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('machines', '0051_iptype_vlan'),
+    ]
+
+    operations = [
+        migrations.RenameField(
+            model_name='iptype',
+            old_name='domaine_ip',
+            new_name='domaine_ip_start',
+        ),
+        migrations.RemoveField(
+            model_name='iptype',
+            name='domaine_range',
+        ),
+        migrations.AddField(
+            model_name='iptype',
+            name='domaine_ip_stop',
+            field=models.GenericIPAddressField(default='255.255.254.254', protocol='IPv4'),
+            preserve_default=False,
+        ),
+    ]
diff --git a/machines/models.py b/machines/models.py
index 4c236296..0153e569 100644
--- a/machines/models.py
+++ b/machines/models.py
@@ -27,7 +27,7 @@ from django.forms import ValidationError
 from django.utils.functional import cached_property
 from django.utils import timezone
 from macaddress.fields import MACAddressField
-from netaddr import mac_bare, EUI, IPSet, IPNetwork
+from netaddr import mac_bare, EUI, IPSet, IPRange, IPNetwork, IPAddress
 from django.core.validators import MinValueValidator,MaxValueValidator
 import re
 from reversion import revisions as reversion
@@ -65,21 +65,17 @@ class IpType(models.Model):
     type = models.CharField(max_length=255)
     extension = models.ForeignKey('Extension', on_delete=models.PROTECT)
     need_infra = models.BooleanField(default=False)
-    domaine_ip = models.GenericIPAddressField(protocol='IPv4')
-    domaine_range = models.IntegerField(validators=[MinValueValidator(16), MaxValueValidator(32)])
+    domaine_ip_start = models.GenericIPAddressField(protocol='IPv4')
+    domaine_ip_stop = models.GenericIPAddressField(protocol='IPv4')
     vlan = models.ForeignKey('Vlan', on_delete=models.PROTECT, blank=True, null=True)
 
     @cached_property
-    def network(self):
-        return str(self.domaine_ip) + '/' + str(self.domaine_range)
-
-    @cached_property
-    def ip_network(self):
-        return IPNetwork(self.network)
+    def ip_range(self):
+        return IPRange(self.domaine_ip_start, end=self.domaine_ip_stop)
 
     @cached_property
     def ip_set(self):
-        return IPSet(self.ip_network)
+        return IPSet(self.ip_range)
 
     @cached_property
     def ip_set_as_str(self):
@@ -93,7 +89,10 @@ class IpType(models.Model):
 
     def gen_ip_range(self):
         # Creation du range d'ip dans les objets iplist
-        ip_obj = [IpList(ip_type=self, ipv4=str(ip)) for ip in self.ip_network.iter_hosts()]
+        networks = []
+        for net in self.ip_range.cidrs():
+            networks += net.iter_hosts()
+        ip_obj = [IpList(ip_type=self, ipv4=str(ip)) for ip in networks]
         IpList.objects.bulk_create(ip_obj)
         return
 
@@ -105,6 +104,11 @@ class IpType(models.Model):
             ip.delete()
 
     def clean(self):
+        if IPAddress(self.domaine_ip_start) > IPAddress(self.domaine_ip_stop):
+            raise ValidationError("Domaine end doit être après start...")
+        # On ne crée pas plus grand qu'un /16
+        if self.ip_range.size > 65536:
+            raise ValidationError("Le range est trop gros, vous ne devez pas créer plus grand qu'un /16")
         # On check que les / ne se recoupent pas
         for element in IpType.objects.all().exclude(pk=self.pk):
             if not self.ip_set.isdisjoint(element.ip_set):
diff --git a/machines/templates/machines/aff_iptype.html b/machines/templates/machines/aff_iptype.html
index c0f6b880..46318c83 100644
--- a/machines/templates/machines/aff_iptype.html
+++ b/machines/templates/machines/aff_iptype.html
@@ -28,8 +28,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
                 <th>Type d'ip</th>
                 <th>Extension</th>
                 <th>Nécessite l'autorisation infra</th>
-                <th>Domaine d'ip</th>
-                <th>Range</th>
+                <th>Début</th>
+                <th>Fin</th>
                 <th>Sur vlan</th>
 		<th></th>
                 <th></th>
@@ -40,8 +40,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
             <td>{{ type.type }}</td>
             <td>{{ type.extension }}</td>
             <td>{{ type.need_infra }}</td>
-            <td>{{ type.domaine_ip }}</td>
-            <td>{{ type.domaine_range }}</td>
+            <td>{{ type.domaine_ip_start }}</td>
+            <td>{{ type.domaine_ip_stop }}</td>
             <td>{{ type.vlan }}</td>
             <td class="text-right">
             {% if is_infra %}