Bug ID 468395: IPv4 Allocation failure ... is out of addresses

Last Modified: Oct 06, 2020

Bug Tracker

Affected Product:  See more info
BIG-IP APM(all modules)

Known Affected Versions:
11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.10, 11.5.2, 11.5.2 HF1

Fixed In:
11.6.0, 11.5.3

Opened: Jun 23, 2014
Severity: 3-Major
Related AskF5 Article:


Existing Network Access clients have problems reconnecting.


Existing clients cannot reconnect. The system posts messages to the APM logs: IPv4 Allocation failure ... is out of addresses.


This occurs when all of the lease pool IP addresses are allocated to Network Access clients.


Assign more IP addresses in the lease pool.

Fix Information

Network Access clients can reconnect now and the lease pool does not run out of IP addresses.

Behavior Change