From 97acefabcfbeb429327b04033fbe5f266c32c474 Mon Sep 17 00:00:00 2001
From: Dillon Henschen <dohenschen@gmail.com>
Date: Wed, 17 May 2023 00:46:45 -0400
Subject: [PATCH] Issue #12622: Fix creating Prefix using VLAN without site

---
 netbox/ipam/forms/model_forms.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/netbox/ipam/forms/model_forms.py b/netbox/ipam/forms/model_forms.py
index cf8117bf7..345f65f04 100644
--- a/netbox/ipam/forms/model_forms.py
+++ b/netbox/ipam/forms/model_forms.py
@@ -1,4 +1,5 @@
 from django import forms
+from django.conf import settings
 from django.contrib.contenttypes.models import ContentType
 from django.core.exceptions import ValidationError
 from django.utils.translation import gettext as _
@@ -213,7 +214,7 @@ class PrefixForm(TenancyForm, NetBoxModelForm):
         required=False,
         label=_('VLAN'),
         query_params={
-            'site_id': '$site',
+            'site_id': ['$site', settings.FILTERS_NULL_CHOICE_VALUE],
         }
     )
     role = DynamicModelChoiceField(