Fixes #3868: Fix creation of interfaces for virtual machines

netbox/utilities/choices.py

@@ -16,6 +16,10 @@ class ChoiceSet(metaclass=ChoiceSetMeta):
     CHOICES = list()
     LEGACY_MAP = dict()
 
+    @classmethod
+    def values(cls):
+        return [c[0] for c in cls.CHOICES]
+
     @classmethod
     def slug_to_id(cls, slug):
         """