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

Last Modified: May 29, 2024

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

Known Affected Versions:
15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 15.1.3, 15.1.3.1, 15.1.4, 15.1.4.1, 15.1.5, 15.1.5.1, 15.1.6, 15.1.6.1, 15.1.7, 15.1.8, 15.1.8.1, 15.1.8.2, 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, 16.1.3.3, 16.1.3.4, 16.1.3.5

Fixed In:
17.1.1, 16.1.4, 15.1.9

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

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips