Bug ID 522837: MCPD can core as a result of another component shutting down prematurely

Last Modified: May 29, 2024

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

Known Affected Versions:
11.5.3, 11.6.0, 12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2

Fixed In:
11.6.1, 11.5.4

Opened: May 12, 2015

Severity: 3-Major


During a small window of opportunity, mcpd can core if it is told to restart. This often occurs when another component has failed.


An mcpd core file is generated during shutdown, and it may initially appear as if mcpd coring was the cause of the restart.


This issue generally occurs when another component has a problem which then initiates an mcpd restart.



Fix Information

Ensured that connections are not deleted twice when shutting down, so mcpd no longer cores.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips