Bug ID 757464: DNS Validating Resolver Cache 'Key' Cache records not deleted correctly when using TMSH command to delete the record

Last Modified: Jul 24, 2020

Bug Tracker

Affected Product:  See more info
BIG-IP DNS(all modules)

Known Affected Versions:
13.1.0, 13.1.0.1, 13.1.0.2, 13.1.0.3, 13.1.0.4, 13.1.0.5, 13.1.0.6, 13.1.0.7, 13.1.0.8, 13.1.1, 13.1.1.2, 13.1.1.3, 13.1.1.4, 13.1.1.5, 13.1.3, 13.1.3.1, 13.1.3.2, 13.1.3.3, 13.1.3.4, 14.0.0, 14.0.0.1, 14.0.0.2, 14.0.0.3, 14.0.0.4, 14.0.0.5, 14.0.1, 14.0.1.1, 14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.5, 14.1.0.6, 14.1.2, 14.1.2.1, 14.1.2.2, 14.1.2.3, 14.1.2.4, 14.1.2.5, 14.1.2.6, 15.0.0, 15.0.1, 15.0.1.1, 15.0.1.2, 15.0.1.3, 15.0.1.4

Fixed In:
15.1.0

Opened: Feb 02, 2019
Severity: 3-Major

Symptoms

Attempt to delete a DNS Validating Resolver cache record from the 'Key' cache does not remove the record. Also displays a negative TTL for that record. tmm crash

Impact

Undesired behavior due to records not being deleted as instructed. Also negative TTL.

Conditions

-- Populate the DNS Validating Resolver Cache. -- Attempt to delete a record from the 'Key' cache.

Workaround

The only workaround is to restart tmm to generate a completely empty DNS cache. Traffic disrupted while tmm restarts.

Fix Information

Fixed an issue preventing records from a DNS Validating Resolver's 'Key' sub-cache from being deleted when utilizing the TMSH command: delete ltm dns cache records key cache

Behavior Change