Fixes #6070: Add missing 'count_ipaddresses' attribute to VMInterface serializer

docs/release-notes/version-2.10.md

@@ -12,6 +12,7 @@
 ### Bug Fixes
 
 * [#5805](https://github.com/netbox-community/netbox/issues/5805) - Fix missing custom field filters for cables, rack reservations
+* [#6070](https://github.com/netbox-community/netbox/issues/6070) - Add missing `count_ipaddresses` attribute to VMInterface serializer
 * [#6073](https://github.com/netbox-community/netbox/issues/6073) - Permit users to manage their own REST API tokens without needing explicit permission
 * [#6081](https://github.com/netbox-community/netbox/issues/6081) - Fix interface connections REST API endpoint
 * [#6108](https://github.com/netbox-community/netbox/issues/6108) - Do not infer tenant assignment from parent objects for prefixes, IP addresses

netbox/dcim/models/device_components.py

@@ -478,6 +478,10 @@ class BaseInterface(models.Model):
 
         return super().save(*args, **kwargs)
 
+    @property
+    def count_ipaddresses(self):
+        return self.ip_addresses.count()
+
 
 @extras_features('export_templates', 'webhooks', 'custom_links')
 class Interface(CableTermination, PathEndpoint, ComponentModel, BaseInterface):
@@ -615,10 +619,6 @@ class Interface(CableTermination, PathEndpoint, ComponentModel, BaseInterface):
     def is_lag(self):
         return self.type == InterfaceTypeChoices.TYPE_LAG
 
-    @property
-    def count_ipaddresses(self):
-        return self.ip_addresses.count()
-
 
 #
 # Pass-through ports

netbox/virtualization/api/serializers.py

@@ -109,12 +109,13 @@ class VMInterfaceSerializer(TaggedObjectSerializer, ValidatedModelSerializer):
         required=False,
         many=True
     )
+    count_ipaddresses = serializers.IntegerField(read_only=True)
 
     class Meta:
         model = VMInterface
         fields = [
             'id', 'url', 'virtual_machine', 'name', 'enabled', 'mtu', 'mac_address', 'description', 'mode',
-            'untagged_vlan', 'tagged_vlans', 'tags',
+            'untagged_vlan', 'tagged_vlans', 'tags', 'count_ipaddresses',
         ]
 
     def validate(self, data):

netbox/virtualization/api/views.py

@@ -80,7 +80,7 @@ class VirtualMachineViewSet(ConfigContextQuerySetMixin, CustomFieldModelViewSet)
 
 class VMInterfaceViewSet(ModelViewSet):
     queryset = VMInterface.objects.prefetch_related(
-        'virtual_machine', 'tags', 'tagged_vlans'
+        'virtual_machine', 'tags', 'tagged_vlans', 'ip_addresses',
     )
     serializer_class = serializers.VMInterfaceSerializer
     filterset_class = filters.VMInterfaceFilterSet