diff --git a/machines/views.py b/machines/views.py
index 50cbe197..f06eb5ff 100644
--- a/machines/views.py
+++ b/machines/views.py
@@ -11,14 +11,19 @@ from .models import NewMachineForm, EditMachineForm, EditInterfaceForm, AddInter
 from .models import Machine, Interface, IpList
 from users.models import User
 
-def unassign_ip(machine):
-    machine.ipv4 = None
-    machine.save()
-
 def unassign_ips(user):
     machines = Interface.objects.filter(machine=Machine.objects.filter(user=user))
     for machine in machines:
-        unassign_ip(machine)
+        unassign_ipv4(machine)
+    return
+
+def assign_ips(user):
+    """ Assign une ipv4 aux machines d'un user """
+    machines = Interface.objects.filter(machine=Machine.objects.filter(user=user))
+    for machine in machines:
+        if not machine.ipv4:
+            interface = assign_ipv4(machine)
+            interface.save()
     return
 
 def free_ip():
@@ -32,6 +37,10 @@ def assign_ipv4(interface):
         interface.ipv4 = free_ips[0]
     return interface
 
+def unassign_ipv4(interface):
+    interface.ipv4 = None
+    interface.save()
+
 def form(ctx, template, request):
     c = ctx
     c.update(csrf(request))
diff --git a/users/views.py b/users/views.py
index 1d51006a..2e1f1f59 100644
--- a/users/views.py
+++ b/users/views.py
@@ -15,7 +15,7 @@ from machines.models import Machine, Interface
 from users.forms  import PassForm
 from search.models import SearchForm
 from cotisations.views import is_adherent, end_adhesion
-from machines.views import unassign_ips
+from machines.views import unassign_ips, assign_ips
 
 from re2o.login import makeSecret, hashNT
 
@@ -24,6 +24,11 @@ def archive(user):
     unassign_ips(user)
     return
 
+def unarchive(user):
+    """ Triger actions au desarchivage d'un user """
+    assign_ips(user)
+    return
+
 def end_ban(user):
     """ Renvoie la date de fin de ban d'un user, False sinon """
     date_max = Ban.objects.all().filter(user=user).aggregate(Max('date_end'))['date_end__max']
@@ -83,6 +88,8 @@ def state(request, userid):
         if state.has_changed():
             if state.cleaned_data['state'] == User.STATE_ARCHIVED:
                 archive(user)
+            else:
+                unarchive(user)
         state.save()
         messages.success(request, "Etat changé avec succès")
         return redirect("/users/")