Bug ID 1011285: The iControl REST API no longer accepts an empty 'lastResortPool' property for wide IP objects.

Last Modified: Jul 12, 2023

Affected Product(s):
BIG-IP DNS, GTM(all modules)

Known Affected Versions:
16.1.0,, 15.1.3,,, 14.1.4,,, 12.1.6

Fixed In:
16.1.0, 15.1.5, 13.1.5

Opened: Apr 14, 2021

Severity: 3-Major


If you attempt a POST or PATCH iControl REST request against a wide IP, and you include an empty 'lastResortPool' property in the JSON body, the system rejects the request as invalid and returns the following validation error: { "code": 400, "message": "\"last-resort-pool\" requires a value", "errorStack": [], "apiError": 26214401 }


Inability to create or modify the wide IP object.


A POST or PATCH command against a wide IP object includes an empty lastResortPool property.


You can use either of the following, depending on what you want to do: -- To create a new wide IP object, remove the empty 'lastResortPool' property from the JSON body. -- To remove the last-resort-pool from an already existing wide IP, define the property as follows instead: "lastResortPool":"none"

Fix Information


Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips