Bug ID 493673: DNS record data may have domain names compressed when using iRules

Last Modified: Oct 06, 2020

Bug Tracker

Affected Product:  See more info
BIG-IP GTM, LTM(all modules)

Known Affected Versions:
11.4.1, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.10, 11.5.2, 11.5.2 HF1, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4

Fixed In:
12.0.0, 11.6.0 HF5, 11.5.3, 11.4.1 HF9

Opened: Dec 01, 2014
Severity: 3-Major
Related AskF5 Article:


Some DNS record types forbid dns name compression in their record data, e.g., the NAPTR Replacement field. For certain parts of the DNS feature set, some of these record datum may have compressed names, e.g., DNS iRules, DNSSEC, GTM.


Some clients may expect uncompressed names and may not be able to follow compression pointers. This may cause the client to fail to use the RR.


Using iRules.



Fix Information

Fields are properly not compressed, e.g., the NAPTR Replacement field.

Behavior Change