mac address object cannot be assigned an interface via REST API

[Molaron]

Deployment Type

Self-hosted

Triage priority

N/A

NetBox Version

v4.2.1

Python Version

3.10

Steps to Reproduce

1. Create the following objects:
   • 1x device (we assume it's id 1001)
   • 1x interface assigned to the device (we assume it's id 2001)
   • 1x independent mac address object (we assume it's id 3001)
2. Send a PATCH request to the following endpoint dcim/mac-addresses/3001/ with the following JSON body:
   • { "assigned_object_type": "dcim.interface", "assigned_object_id": 2001 }

Expected Behavior

The request should succeed and the interface should be assigned to the mac address.

Observed Behavior

The request fails with the following error message:

{
    "assigned_object_id": [
        "This field cannot be null."
    ]
}

[ITJamie]

This should be fixed in #18363.

There hasn't been a release yet