Bug ID 1627077: In BIND version 9.18.27, the DEFAULT EDNS BUFSIZE has been reduced from 4096 to 1232.

Last Modified: Mar 12, 2025

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

Opened: Aug 12, 2024

Severity: 3-Major

Symptoms

No DNS response is received for messages larger than 1232 bytes.

Impact

DNS resolution fails.

Conditions

Resolve a domain with a message size exceeding 1232 bytes.

Workaround

Configure a TCP listener or adjust the buffer size in the DNS query to 4096 using +bufsize=4096.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips