diff --git a/machines/forms.py b/machines/forms.py
index 6a8d8d27..05f3a1f6 100644
--- a/machines/forms.py
+++ b/machines/forms.py
@@ -1,6 +1,7 @@
 from django.forms import ModelForm, Form, ValidationError
 from django import forms
 from .models import Alias, Machine, Interface, IpList, MachineType, Extension, Mx, Ns, IpType
+from django.db.models import Q
 
 class EditMachineForm(ModelForm):
     class Meta:
@@ -41,7 +42,9 @@ class AddInterfaceForm(EditInterfaceForm):
         self.fields['ipv4'].empty_label = "Assignation automatique de l'ipv4"
         if not infra:
             self.fields['type'].queryset = MachineType.objects.filter(ip_type=IpType.objects.filter(need_infra=False))
-            self.fields['ipv4'].queryset = IpList.objects.filter(ip_type=IpType.objects.filter(need_infra=False))
+            self.fields['ipv4'].queryset = IpList.objects.filter(interface__isnull=True).filter(ip_type=IpType.objects.filter(need_infra=False))
+        else:
+            self.fields['ipv4'].queryset = IpList.objects.filter(interface__isnull=True)
 
 class NewInterfaceForm(EditInterfaceForm):
     class Meta(EditInterfaceForm.Meta):
@@ -57,7 +60,9 @@ class BaseEditInterfaceForm(EditInterfaceForm):
         self.fields['ipv4'].empty_label = "Assignation automatique de l'ipv4"
         if not infra:
             self.fields['type'].queryset = MachineType.objects.filter(ip_type=IpType.objects.filter(need_infra=False))
-            self.fields['ipv4'].queryset = IpList.objects.filter(ip_type=IpType.objects.filter(need_infra=False))
+            self.fields['ipv4'].queryset = IpList.objects.filter(interface__isnull=True).filter(ip_type=IpType.objects.filter(need_infra=False))
+        else:
+            self.fields['ipv4'].queryset = IpList.objects.filter(interface__isnull=True)
 
 class AliasForm(ModelForm):
     class Meta:
diff --git a/machines/views.py b/machines/views.py
index fd8e5a93..522b6730 100644
--- a/machines/views.py
+++ b/machines/views.py
@@ -197,7 +197,7 @@ def new_interface(request, machineid):
                 reversion.set_user(request.user)
                 reversion.set_comment("Création")
             messages.success(request, "L'interface a été ajoutée")
-            return redirect("/users/profil/" + str(request.user.id))
+            return redirect("/users/profil/" + str(machine.user.id))
     return form({'interfaceform': interface_form}, 'machines/machine.html', request)
 
 @login_required