Last Modified: Apr 28, 2025
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
11.0.0, 11.2.0, 11.2.1, 11.3.0, 11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4
Fixed In:
11.6.0, 11.5.1 HF5, 11.4.1 HF6, 11.2.1 HF11
Opened: Mar 13, 2014 Severity: 3-Major Related Article:
K15489
When a suspended iRule returns, DNS::question name may return a different name than before suspension.
iRule execution depending on the question names to be the same may have undefined behavior.
A DNS iRule which uses a command that suspends the iRule, such as the table command.
Set the qname to a local variable before calling any commands which suspend the iRule, e.g. table.
iRule no longer uses stale qname.