Bug ID 450671: BIG-IP UDP virtual server may not send ICMP Destination Unreachable message Code 3 (port unreachable).

Last Modified: Aug 05, 2019

Bug Tracker

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

Known Affected Versions:
11.3.0, 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, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.5.4, 11.5.4 HF1, 11.5.4 HF2, 11.5.4 HF3, 11.5.4 HF4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9

Opened: Feb 27, 2014
Severity: 4-Minor
Related AskF5 Article:
K15537

Symptoms

A BIG-IP UDP virtual server may not send an ICMP Destination Unreachable message Code 3 (port unreachable). As a result of this issue, you may encounter the following symptoms: -- Client applications may not respond or appear to hang. -- When attempting to troubleshoot the connectivity issue from remote devices, no ICMP diagnostic data is available from the BIG-IP system.

Impact

In versions 11.3.0 through 11.4.1, the system silently drops the request. In versions 11.5.0 and later, the system sends back the ICMP message with type 13 ('administratively filtered').

Conditions

This issue occurs when the following condition is met: All pool members for the UDP virtual server are unavailable.

Workaround

None.

Fix Information

None

Behavior Change