Bug ID 606110: BIG-IP VE dataplane interfaces change to using UNIC modules instead of sockets.

Last Modified: Aug 19, 2026

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

Known Affected Versions:
12.0.0, 12.0.0 hf1, 12.0.0 hf2, 12.0.0 hf3, 12.0.0 hf4, 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: Jul 20, 2016

Severity: 3-Major

Symptoms

On AWS and Azure, dataplane interfaces use socket-based networking instead of UNIC modules. After upgrading a version later than 12.1.0, the default module for dataplane interfaces is UNIC modules instead of socket-based networking.

Impact

The raw socket-based tmm driver is replaced by a UNIC driver. The socket-based driver eliminates kernel driver dependencies and provides better portability during kernel/driver upgrades.

Conditions

Upgrading BIG-IP VE on AWS or Azure running versions 12.0.0 or 12.1.0.

Workaround

None.

Fix Information

BIG-IP VE socket-based networking driver retained after upgrade on AWS or Azure.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips