From 73348ee43529031582a81d765a829bf0d4c69bd8 Mon Sep 17 00:00:00 2001
From: Jeremy Stretch <jstretch@netboxlabs.com>
Date: Mon, 10 Jul 2023 13:53:31 -0400
Subject: [PATCH] Fixes #13105: Avoid exception when attempting to allocate
 next available IP address from prefix marked as utilized

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

diff --git a/netbox/ipam/models/ip.py b/netbox/ipam/models/ip.py
index 015f9220c..00dcf8422 100644
--- a/netbox/ipam/models/ip.py
+++ b/netbox/ipam/models/ip.py
@@ -406,7 +406,7 @@ class Prefix(GetAvailablePrefixesMixin, PrimaryModel):
         Return all available IPs within this prefix as an IPSet.
         """
         if self.mark_utilized:
-            return list()
+            return netaddr.IPSet()
 
         prefix = netaddr.IPSet(self.prefix)
         child_ips = netaddr.IPSet([ip.address.ip for ip in self.get_child_ips()])