update to work on different computer

Signed-off-by: Nico Schottelius <nico@nico-notebook.schottelius.org>

uncloud_django_based/uncloud/uncloud_net/models.py

@@ -1,3 +1,5 @@
+import uuid
+
 from django.db import models
 from django.contrib.auth import get_user_model
 from django.core.validators import MinValueValidator, MaxValueValidator
@@ -15,24 +17,36 @@ class VPNPool(UncloudModel):
     Network address pools from which VPNs can be created
     """
 
-    network = models.GenericIPAddressField(primary_key=True)
+    uuid = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
 
+    network = models.GenericIPAddressField(unique=True)
     network_size = models.IntegerField(validators=[MinValueValidator(0),
                                                    MaxValueValidator(128)])
 
+    subnetwork_size = models.IntegerField(validators=[MinValueValidator(0),
+                                                   MaxValueValidator(128)])
+
     vpn_hostname = models.CharField(max_length=256)
 
     wireguard_private_key = models.CharField(max_length=48)
 
 
-class VPNNetwork(Product):
+class VPNNetworkReservation(UncloudModel):
     """
-    A selected network. Used for tracking reservations / used networks
+    This class tracks the used VPN networks. It will be deleted, when the product is cancelled.
     """
     vpnpool = models.ForeignKey(VPNPool,
                                   on_delete=models.CASCADE)
 
-    network = models.GenericIPAddressField(editable=False,
-                                           unique=True)
+    address = models.GenericIPAddressField(primary_key=True)
+
+
+class VPNNetwork(Product):
+    """
+    A selected network. Used for tracking reservations / used networks
+    """
+    network = models.ForeignKey(VPNNetworkReservation,
+                                on_delete=models.CASCADE,
+                                editable=False)
 
     wireguard_public_key = models.CharField(max_length=48)