Bug ID 560909: LTM policy is unable to disable SNAT

Last Modified: Oct 16, 2023

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

Known Affected Versions:
11.6.3,,, 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:
13.0.0, 12.1.0,

Opened: Dec 03, 2015

Severity: 4-Minor


The SNAT feature of an LTM policy used two keywords, 'automap' and 'none', to configure SNAT as automap or disabled, respectively. It turns out that the keyword 'none' has special meaning in tmsh, and is treated as an invalid value.


Cannot disable SNAT using LTM policy.


-- LTM policy with automap action. -- Attempt to disable SNAT from either GUI or tmsh using the value 'none'.


Remove the SNAT action from LTM policy, and use an iRule instead.

Fix Information

LTM policy can now successfully disable SNAT.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips