Bug ID 463202: BIG-IP system drops non-zero version EDNS requests

Last Modified: Oct 06, 2020

Bug Tracker

Affected Product:  See more info
BIG-IP GTM, LTM(all modules)

Known Affected Versions:
11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.10, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.5.4, 11.5.4 HF1, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8, 11.6.1

Fixed In:
12.0.0, 11.6.1 HF1, 11.5.4 HF2, 11.4.1 HF9

Opened: May 19, 2014
Severity: 3-Major
Related AskF5 Article:
K17086

Symptoms

If a query from a client contains a non-zero EDNS version, the query is dropped instead of sending an appropriate response.

Impact

Dropped queries, retries, and then time-outs occur.

Conditions

This occurs with DNS profile/processing when a client sends a query with non-zero EDNS version.

Workaround

None

Fix Information

If the EDNS version is not zero, the query passes through the filter and is not dropped.

Behavior Change