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

Last Modified: Sep 13, 2023

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

Known Affected Versions:
15.1.0,,,,,, 15.1.1, 15.1.2,, 15.1.3,, 15.1.4,, 15.1.5,, 15.1.6,, 15.1.7, 15.1.8,,, 16.0.1,,, 16.1.0, 16.1.1, 16.1.2,,, 16.1.3,,,,,

Fixed In:
16.1.4, 15.1.9

Opened: Jun 08, 2022

Severity: 3-Major


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


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


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


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

Fix Information


Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips