Fix tests on single-object forms

netbox/dcim/forms/model_forms.py

@@ -1538,6 +1538,14 @@ class InterfaceForm(InterfaceCommonForm, ModularDeviceComponentForm):
             'mode': '802.1Q Mode',
         }
 
+    def clean_mac_address(self):
+        return MACAddress.objects.create(mac_address=self.cleaned_data['mac_address'])
+
+    def save(self, commit=True):
+        result = super().save(commit=commit)
+        self.instance.mac_addresses.add(self.cleaned_data['mac_address'])
+        return result
+
 
 class FrontPortForm(ModularDeviceComponentForm):
     rear_port = DynamicModelChoiceField(

netbox/extras/tests/test_filtersets.py

@@ -1135,6 +1135,7 @@ class TagTestCase(TestCase, ChangeLoggedFilterSetTests):
         'l2vpn',
         'l2vpntermination',
         'location',
+        'macaddress',
         'manufacturer',
         'module',
         'modulebay',

netbox/virtualization/forms/model_forms.py

@@ -4,7 +4,7 @@ from django.core.exceptions import ValidationError
 from django.utils.translation import gettext_lazy as _
 
 from dcim.forms.common import InterfaceCommonForm
-from dcim.models import Device, DeviceRole, Platform, Rack, Region, Site, SiteGroup
+from dcim.models import Device, DeviceRole, MACAddress, Platform, Rack, Region, Site, SiteGroup
 from extras.models import ConfigTemplate
 from ipam.models import IPAddress, VLAN, VLANGroup, VLANTranslationPolicy, VRF
 from netbox.forms import NetBoxModelForm
@@ -370,6 +370,14 @@ class VMInterfaceForm(InterfaceCommonForm, VMComponentForm):
             'mode': HTMXSelect(),
         }
 
+    def clean_mac_address(self):
+        return MACAddress.objects.create(mac_address=self.cleaned_data['mac_address'])
+
+    def save(self, commit=True):
+        result = super().save(commit=commit)
+        self.instance.mac_addresses.add(self.cleaned_data['mac_address'])
+        return result
+
 
 class VirtualDiskForm(VMComponentForm):