From 6651bbd5d597363dd1fe1f82075a6737555ac98e Mon Sep 17 00:00:00 2001
From: hellerve <veit@veitheller.de>
Date: Fri, 24 May 2019 19:00:27 +0200
Subject: [PATCH] ipam: make Prefix.vlan deletable

---
 netbox/ipam/models.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/netbox/ipam/models.py b/netbox/ipam/models.py
index a2f7bbe07..d15e1e8ad 100644
--- a/netbox/ipam/models.py
+++ b/netbox/ipam/models.py
@@ -289,7 +289,7 @@ class Prefix(ChangeLoggedModel, CustomFieldModel):
     )
     vlan = models.ForeignKey(
         to='ipam.VLAN',
-        on_delete=models.PROTECT,
+        on_delete=models.SET_NULL,
         related_name='prefixes',
         blank=True,
         null=True,