Fix IP choices for DeviceForm

netbox/dcim/forms.py

@@ -1816,18 +1816,22 @@ class DeviceForm(BootstrapMixin, TenancyForm, CustomFieldModelForm):
                 ip_choices = [(None, '---------')]
 
                 # Gather PKs of all interfaces belonging to this Device or a peer VirtualChassis member
-                interface_ids = self.instance.vc_interfaces.values('pk')
+                interface_ids = self.instance.vc_interfaces.values_list('pk', flat=True)
 
                 # Collect interface IPs
                 interface_ips = IPAddress.objects.prefetch_related('interface').filter(
-                    address__family=family, interface_id__in=interface_ids
+                    address__family=family,
+                    assigned_object_type=ContentType.objects.get_for_model(Interface),
+                    assigned_object_id__in=interface_ids
                 )
                 if interface_ips:
                     ip_list = [(ip.id, '{} ({})'.format(ip.address, ip.interface)) for ip in interface_ips]
                     ip_choices.append(('Interface IPs', ip_list))
                 # Collect NAT IPs
                 nat_ips = IPAddress.objects.prefetch_related('nat_inside').filter(
-                    address__family=family, nat_inside__interface__in=interface_ids
+                    address__family=family,
+                    nat_inside__assigned_object_type=ContentType.objects.get_for_model(Interface),
+                    nat_inside__assigned_object_id__in=interface_ids
                 )
                 if nat_ips:
                     ip_list = [(ip.id, '{} ({})'.format(ip.address, ip.nat_inside.address)) for ip in nat_ips]