Bug ID 992885: DNS_RR::read, Bad RRDATA

Last Modified: Apr 28, 2025

Affected Product(s):
APM-Clients APM(all modules)

Known Affected Versions:
7.2.1, 7.2.1.1

Fixed In:
7.2.1.2

Opened: Feb 11, 2021

Severity: 3-Major

Symptoms

-- You notice an error in the logs DNS_RR::read, Bad RRDATA. -- Random DNS queries fail.

Impact

DNS Query fails randomly.

Conditions

-- Your device is installed with one of the following BIG-IP APM clients versions: 7.2.1 or 7.2.1.1. -- DNS Relay Proxy service is enabled. -- There are higher volumes of records using TCP for response.

Workaround

Disable DNS Relay Proxy service.

Fix Information

Fixed an issue with DNS relay causing DNS_RR::read, Bad RRDATA errors.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips