Bug ID 1012009: MQTT Message Routing virtual may result in TMM crash

Last Modified: May 29, 2024

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

Known Affected Versions:
15.1.2,, 15.1.3,, 15.1.4, 16.0.0,, 16.0.1,,, 16.1.0, 16.1.1, 16.1.2,,, 16.1.3,,,,,, 16.1.4,,,, 17.0.0,,

Fixed In:

Opened: Apr 16, 2021

Severity: 3-Major


The BIG-IP system provides an option to use Message Routing virtual servers for MQTT traffic. It uses a different approach to associate a client side and a server side than a standard virtual server. In some instances, a server side is incorrectly handled.


Traffic disrupted while tmm restarts.


-- A Message Routing virtual with MQTT protocol. -- A client attempts to reconnect.



Fix Information

When a client attempts to reconnect, and an existing server side connection is used, TMM correctly handles the connection's state and no longer crashes for this reason.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips