diff --git a/machines/models.py b/machines/models.py
index b8b62d4b..509fb2cb 100644
--- a/machines/models.py
+++ b/machines/models.py
@@ -1,7 +1,12 @@
 from django.db import models
+from django.db.models.signals import post_save, post_delete
+from django.dispatch import receiver
 from django.forms import ValidationError
 from macaddress.fields import MACAddressField
 
+
+
+
 class Machine(models.Model):
     user = models.ForeignKey('users.User', on_delete=models.PROTECT)
     name = models.CharField(max_length=255, help_text="Optionnel", blank=True, null=True)
@@ -38,6 +43,11 @@ class Interface(models.Model):
         user = self.machine.user
         return machine.active and user.has_access()
 
+    #def save(self, *args, **kwargs):
+    #    user = self.machine.user
+    #    user.ldap_sync(base=False, access_refresh=False, mac_refresh=True)
+    #    super(Interface, self).save(*args, **kwargs)
+
     def __str__(self):
         return self.dns
 
@@ -47,3 +57,13 @@ class IpList(models.Model):
     def __str__(self):
         return self.ipv4
 
+
+@receiver(post_save, sender=Interface)
+def interface_post_save(sender, **kwargs):
+    user = kwargs['instance'].machine.user
+    user.ldap_sync(base=False, access_refresh=False, mac_refresh=True)
+
+@receiver(post_delete, sender=Interface)
+def interface_post_delete(sender, **kwargs):
+    user = kwargs['instance'].machine.user
+    user.ldap_sync(base=False, access_refresh=False, mac_refresh=True)
diff --git a/re2o/settings.py b/re2o/settings.py
index e6391e53..a362e8f9 100644
--- a/re2o/settings.py
+++ b/re2o/settings.py
@@ -12,7 +12,7 @@ https://docs.djangoproject.com/en/1.8/ref/settings/
 
 # Build paths inside the project like this: os.path.join(BASE_DIR, ...)
 import os
-from .settings_local import SECRET_KEY, DATABASES, DEBUG, ALLOWED_HOSTS, ASSO_NAME, ASSO_ADDRESS_LINE1, ASSO_ADDRESS_LINE2, ASSO_SIRET, ASSO_EMAIL, ASSO_PHONE, LOGO_PATH, services_urls, REQ_EXPIRE_HRS, REQ_EXPIRE_STR, EMAIL_FROM, SITE_NAME
+from .settings_local import SECRET_KEY, DATABASES, DEBUG, ALLOWED_HOSTS, ASSO_NAME, ASSO_ADDRESS_LINE1, ASSO_ADDRESS_LINE2, ASSO_SIRET, ASSO_EMAIL, ASSO_PHONE, LOGO_PATH, services_urls, REQ_EXPIRE_HRS, REQ_EXPIRE_STR, EMAIL_FROM, SITE_NAME, LDAP_SETTINGS
 
 BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 
@@ -102,6 +102,8 @@ USE_L10N = True
 
 USE_TZ = True
 
+DATABASE_ROUTERS = ['ldapdb.router.Router']
+
 
 # django-bootstrap3 config dictionnary
 BOOTSTRAP3 = {