Bug ID 597900: iControl REST may core when logging in immediately after a reboot

Last Modified: Nov 07, 2022

Affected Product(s):
BIG-IP TMOS(all modules)

Known Affected Versions:
12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2, 12.1.2 HF1, 12.1.2 HF2, 12.1.3,,,,,,,, 12.1.4,, 12.1.5,,,, 12.1.6

Fixed In:

Opened: Jun 07, 2016

Severity: 2-Critical

Related Article: K26397341


In rare conditions, Control REST may core when necessary services and resources are not fully initialized. One typical scenario for this is logging in immediately after restarting the BIG-IP system.


Impacts usability of iControl REST. This is a rare occurrence.


This happens when all the necessary services required by iControl REST are not available, such as when they are not fully initialized upon restart.


To work around this issue, allow the BIG-IP system to fully start before you access the iControl REST API.

Fix Information

iControl REST no longer rarely cores when logging in immediately after restarting the BIG-IP system.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips