Bug ID 657883: tmm cache resolver should not cache response with TTL=0

Last Modified: Sep 13, 2023

Affected Product(s):
BIG-IP DNS, LTM(all modules)

Known Affected Versions:
11.5.4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.6.0, 11.6.1, 11.6.2, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2, 12.1.0, 12.1.1, 12.1.2, 12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1

Fixed In:
13.1.0, 12.1.3.6, 11.6.4, 11.5.9

Opened: Apr 11, 2017

Severity: 3-Major

Related Article: K34442339

Symptoms

tmm cache resolver caches responses with TTL=0, and it shouldn't.

Impact

tmm cache resolver caches responses with TTL=0.

Conditions

TTL is set to 0 on the BIG-IP DNS system, so TMM will see TTL=0 from the DNS answer.

Workaround

None.

Fix Information

The system no longer caches ttl=0 response for tmm cache resolver. This is correct behavior.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips