Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

Yanik's avatar
Yanik
Icon for Altocumulus rankAltocumulus
Dec 17, 2019

iRule issue after an upgrade

Hi Guys ! Does anyone knows a "workaround" for this issue after upgrading from 13.4 to 14.1.2 ?   ID: 394873 Upgrade process does not update Tcl scripts Upgrading Tcl scripts (such as iRule...
application delivery
irules
LTM
security
M_2's avatar
M_2
Icon for Altocumulus rankAltocumulus
Dec 18, 2019

Does the ltm logs show any specific rule that has the issue with the syntax ?

  • Yanik's avatar
    Yanik
    Icon for Altocumulus rankAltocumulus
    Dec 18, 2019

    Yes, but there is NO syntax problem.

    I changed one character, updated the iRule and got syntax error, then I changed the character back and the LTM saved the iRule well.