Fixes #9884: Prevent querying assigned VRF on prefix object init

docs/release-notes/version-3.2.md

@@ -11,6 +11,7 @@
 
 ### Bug Fixes
 
+* [#9884](https://github.com/netbox-community/netbox/issues/9884) - Prevent querying assigned VRF on prefix object init
 * [#9891](https://github.com/netbox-community/netbox/issues/9891) - Ensure consistent ordering for tags during object serialization
 
 ---

netbox/ipam/models/ip.py

@@ -373,7 +373,7 @@ class Prefix(GetAvailablePrefixesMixin, NetBoxModel):
 
         # Cache the original prefix and VRF so we can check if they have changed on post_save
         self._prefix = self.prefix
-        self._vrf = self.vrf
+        self._vrf_id = self.vrf_id
 
     def __str__(self):
         return str(self.prefix)

netbox/ipam/signals.py

@@ -30,14 +30,14 @@ def update_children_depth(prefix):
 def handle_prefix_saved(instance, created, **kwargs):
 
     # Prefix has changed (or new instance has been created)
-    if created or instance.vrf != instance._vrf or instance.prefix != instance._prefix:
+    if created or instance.vrf_id != instance._vrf_id or instance.prefix != instance._prefix:
 
         update_parents_children(instance)
         update_children_depth(instance)
 
         # If this is not a new prefix, clean up parent/children of previous prefix
         if not created:
-            old_prefix = Prefix(vrf=instance._vrf, prefix=instance._prefix)
+            old_prefix = Prefix(vrf_id=instance._vrf_id, prefix=instance._prefix)
             update_parents_children(old_prefix)
             update_children_depth(old_prefix)