Bug ID 623927: Flow entry memory leaked after DHCP DORA process

Last Modified: Aug 19, 2026

Affected Product(s):
BIG-IP PEM(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, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 12.1.3.7, 12.1.4, 12.1.4.1, 12.1.5, 12.1.5.1, 12.1.5.2, 12.1.5.3, 12.1.6

Fixed In:
13.0.0

Opened: Oct 20, 2016

Severity: 3-Major

Related Article: K41337253

Symptoms

After DHCP discover/offer/request/ack process (DORA), client side connection flow entry memory is not freed.

Impact

The system leaks flow entry memory. Over a long period of time, system memory will eventually run out.

Conditions

Run the DHCP DORA process through BIG-IP (in relay mode or forwarding mode, and wait for client connection flow entry ages out.

Workaround

None.

Fix Information

After DHCP discover/offer/request/ack process (DORA), client side connection flow entry memory is now freed, so no memory leak occurs.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips