Bug ID 2007425: iRule accepts semicolon to comment out a line

Last Modified: Oct 15, 2025

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

Known Affected Versions:
17.1.2, 17.1.2.1, 17.1.2.2, 17.1.3, 17.5.0, 17.5.1, 17.5.1.2, 17.5.1.3

Opened: Jul 30, 2025

Severity: 3-Major

Symptoms

When a semicolon is used to comment out line of code in an iRule via configuration utility, the BIG-IP system accepts this when it shouldn't.

Impact

A configuration load ("tmsh load sys config" or "tmsh load sys config verify") fails with an error such as: Syntax Error:(/config/bigip.conf at line: XXX) ";" unknown property

Conditions

Not using # for commenting in an iRule

Workaround

Use # for commenting in an iRule

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips