Bug ID 1112781: DNS query drops on Virtual Edition platform if the packet size is above 1500 for NAPTR record.

Last Modified: Nov 07, 2022

Bug Tracker

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

Known Affected Versions:
16.0.0, 16.0.0.1, 16.0.1, 16.0.1.1, 16.0.1.2, 16.1.0, 16.1.1, 16.1.2, 16.1.2.1, 16.1.2.2, 16.1.3, 16.1.3.1, 16.1.3.2

Opened: Jun 08, 2022
Severity: 3-Major

Symptoms

The BIG-IP system drops the packet if the DNS response size is larger than 2048.

Impact

The BIG-IP system drops the packet and does not respond to the client.

Conditions

When the DNS server sends a response larger than 2048 bytes.

Workaround

If possible, switch from UDP to TCP to avoid dropping the packet.

Fix Information

None

Behavior Change