Last Modified: Sep 04, 2026
Affected Product(s):
BIG-IP Install/Upgrade, LTM
Known Affected Versions:
16.1.4, 16.1.4.1, 16.1.4.2, 16.1.4.3, 16.1.5, 16.1.5.1, 16.1.5.2, 16.1.6, 16.1.6.1, 17.1.0, 17.1.0.1, 17.1.0.2, 17.1.0.3, 17.1.1, 17.1.1.1, 17.1.1.2, 17.1.1.3, 17.1.1.4, 17.1.2, 17.1.2.1, 17.1.2.2, 17.1.3, 17.1.3.1, 17.1.3.2, 17.1.3.4, 17.1.3.5, 17.5.0, 17.5.1, 17.5.1.2, 17.5.1.3, 17.5.1.4, 17.5.1.5, 17.5.1.6, 17.5.1.8, 17.5.1.9
Opened: Dec 29, 2023 Severity: 4-Minor
After an upgrade, you can see: # semodule --list-modules=full | grep nfast 'nfast' module is missing.
The only implication of missing 'nfast' module is failing Luna client software upgrade.
The issue is caused by the upgrade of BIG-IP software. Before upgrade 'nfast' module is there, after upgrade the module is missing.
As a workaround, you can reinstall semodule after upgrade: semodule -i /shared/nfast/scripts/lib/nfast.pp It would also make installation of nShield software possible.
None