Two Prefixes created in Custom Script, one with given VLAN and VRF, one in VRF Global

[jesper-munk2]

In Netbox v4.6.9 I create in Custom Script a Prefix with code:
corporate_prefix = Prefix(
prefix=data["corporate_ipsubnet"],
scope=site,
vlan=corporate_vlan,
)
corporate_prefix.full_clean()
corporate_prefix.save()

i.e. within a specific site, with a specific VLAN and a specific (non-default) VLAN.

This results in two "versions" of this prefix being created, see screenshot below (let us look at the corporate prefix 10.11.23.0/24 in VRF corporate, VLAN 2099, in this case):

• one with the provided VLAN and VRF
• one within VRF Global and no VLAN. This prefix I do not need, and actually it will create issues for my prefix/VRF/VLAN setup in my solution.

When I attempt to tlelete the above corporate prefix 10.11.23.0/24 in VRF Global with the below code, I get the following error for the Prefix.objects.get statement:

An exception occurred: FieldError: Field 'scope' does not generate an automatic reverse relation and therefore cannot be used for reverse querying. If it is a GenericForeignKey, consider adding a GenericRelation.

corporate_prefix_no_vrf_vlan = Prefix.objects.get(
prefix=data["corporate_ipsubnet"],
scope=site,
vlan=None,
vrf=None,
)

Requests for assistance:

1. I am only interested in prefixes within a given (non-default) VRF and VLAN. When I create such a prefix as described above, how can I avoid creating also an instance of the same prefix but within VRF Global and with no VLAN. Avoiding this will be the best solution.
2. If I cannot avoid creating the "additional" prefix instance in VRF Global, how can I delete that instance?

[pheus]

Since this is a direct follow-up to the original custom script/prefix creation discussion, I’m going to close this one so we can keep the full context in one place. Please continue in #22069, which I’ve reopened.