Last Modified: Jul 18, 2026
Affected Product(s):
BIG-IP Install/Upgrade, LTM
Known Affected Versions:
11.6.0, 11.6.0 hf1, 11.6.0 hf2, 11.6.0 hf3, 11.6.0 hf4, 11.6.0 hf5, 11.6.0 hf6, 11.6.0 hf7, 11.6.0 hf8, 11.6.1, 11.6.1 hf1, 11.6.1 hf2, 11.6.2, 11.6.2 hf1, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3
Opened: Jun 24, 2014 Severity: 3-Major
If you have several very large DNSX zones (tens of thousands of records/hundreds of mb each), one of them may fail to be fully loaded on startup after a roll-fwd upgrade. So DNSX cannot answer for records in that zone.
DNSX cannot answer for the zone.
Several very large DNSX zones loaded.
Simply disable and re-enable the zone.
None