diff --git a/api/serializers.py b/api/serializers.py
index 6cc020f3..1da76e6c 100644
--- a/api/serializers.py
+++ b/api/serializers.py
@@ -734,7 +734,7 @@ class NSRecordSerializer(NsSerializer):
     """Serialize `machines.models.Ns` objects with the data needed to
     generate a NS DNS record.
     """
-    target = serializers.CharField(source='ns.name', read_only=True)
+    target = serializers.CharField(source='ns', read_only=True)
 
     class Meta(NsSerializer.Meta):
         fields = ('target',)
@@ -744,7 +744,7 @@ class MXRecordSerializer(MxSerializer):
     """Serialize `machines.models.Mx` objects with the data needed to
     generate a MX DNS record.
     """
-    target = serializers.CharField(source='name.name', read_only=True)
+    target = serializers.CharField(source='name', read_only=True)
 
     class Meta(MxSerializer.Meta):
         fields = ('target', 'priority')
@@ -864,7 +864,7 @@ class DNSReverseZonesSerializer(serializers.ModelSerializer):
         model = machines.IpType
         fields = ('type', 'extension', 'soa', 'ns_records', 'mx_records',
                   'txt_records', 'ptr_records', 'ptr_v6_records', 'cidrs',
-                  'prefix_v6')
+                  'prefix_v6', 'prefix_v6_length')
 
 # MAILING
 
diff --git a/machines/forms.py b/machines/forms.py
index c0af0bd6..b68cb203 100644
--- a/machines/forms.py
+++ b/machines/forms.py
@@ -231,7 +231,7 @@ class EditIpTypeForm(IpTypeForm):
     class Meta(IpTypeForm.Meta):
         fields = ['extension', 'type', 'need_infra', 'domaine_ip_network', 'domaine_ip_netmask',
                   'prefix_v6', 'prefix_v6_length',
-                  'vlan', 'dnssec_reverse_v4', 'dnssec_reverse_v6',
+                  'vlan', 'reverse_v4', 'reverse_v6',
                   'ouverture_ports']
 
 
diff --git a/machines/migrations/0092_auto_20180807_0926.py b/machines/migrations/0092_auto_20180807_0926.py
new file mode 100644
index 00000000..f109a650
--- /dev/null
+++ b/machines/migrations/0092_auto_20180807_0926.py
@@ -0,0 +1,25 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.7 on 2018-08-07 07:26
+from __future__ import unicode_literals
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('machines', '0091_auto_20180806_2310'),
+    ]
+
+    operations = [
+        migrations.RenameField(
+            model_name='iptype',
+            old_name='dnssec_reverse_v4',
+            new_name='reverse_v4',
+        ),
+        migrations.RenameField(
+            model_name='iptype',
+            old_name='dnssec_reverse_v6',
+            new_name='reverse_v6',
+        ),
+    ]
diff --git a/machines/models.py b/machines/models.py
index 34f91adf..b9fd9205 100644
--- a/machines/models.py
+++ b/machines/models.py
@@ -292,9 +292,9 @@ class IpType(RevMixin, AclMixin, models.Model):
         ],
         help_text="Netmask for the ipv4 range domain"
     )
-    dnssec_reverse_v4 = models.BooleanField(
+    reverse_v4 = models.BooleanField(
             default=False, 
-            help_text="Activer DNSSEC sur le reverse DNS IPv4",
+            help_text="Enable reverse DNS for IPv4",
     )
     prefix_v6 = models.GenericIPAddressField(
         protocol='IPv6',
@@ -308,9 +308,9 @@ class IpType(RevMixin, AclMixin, models.Model):
             MinValueValidator(0)
         ]
         )
-    dnssec_reverse_v6 = models.BooleanField(
+    reverse_v6 = models.BooleanField(
             default=False,
-            help_text="Activer DNSSEC sur le reverse DNS IPv6",
+            help_text="Enable reverse DNS for IPv6",
     )
     vlan = models.ForeignKey(
         'Vlan',
@@ -450,14 +450,20 @@ class IpType(RevMixin, AclMixin, models.Model):
 
     def get_associated_ptr_records(self):
         from re2o.utils import all_active_assigned_interfaces
-        return (all_active_assigned_interfaces()
-                .filter(type__ip_type=self)
-                .filter(ipv4__isnull=False))
+        if self.reverse_v4:
+            return (all_active_assigned_interfaces()
+                    .filter(type__ip_type=self)
+                    .filter(ipv4__isnull=False))
+        else:
+            return None
 
     def get_associated_ptr_v6_records(self):
         from re2o.utils import all_active_interfaces
-        return (all_active_interfaces(full=True)
-                .filter(type__ip_type=self))
+        if self.reverse_v6:
+            return (all_active_interfaces(full=True)
+                    .filter(type__ip_type=self))
+        else:
+            return None
 
     def clean(self):
         """ Nettoyage. Vérifie :
diff --git a/machines/templates/machines/aff_iptype.html b/machines/templates/machines/aff_iptype.html
index ccb70a14..afd35d1b 100644
--- a/machines/templates/machines/aff_iptype.html
+++ b/machines/templates/machines/aff_iptype.html
@@ -48,7 +48,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
             <td>{{ type.need_infra|tick }}</td>
 	    <td>{{ type.domaine_ip_start }}-{{ type.domaine_ip_stop }}{% if type.ip_network %}<b><u> on </b></u>{{ type.ip_network }}{% endif %}</td>
             <td>{{ type.prefix_v6 }}/{{ type.prefix_v6_length }}</td>
-	    <td>{{ type.dnssec_reverse_v4|tick }}/{{ type.dnssec_reverse_v6|tick }}</td>
+	    <td>{{ type.reverse_v4|tick }}/{{ type.reverse_v6|tick }}</td>
             <td>{{ type.vlan }}</td>
             <td>{{ type.ouverture_ports }}</td>
             <td class="text-right">