Bug ID 550161: Networking devices might block a packet that has a TTL value higher than 230.

Last Modified: Sep 13, 2023

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

Known Affected Versions:
11.6.0, 11.6.1, 11.6.2, 11.6.3,,,,, 11.6.4, 11.6.5,,,, 12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2, 12.1.0, 12.1.1

Fixed In:
13.0.0, 12.1.2

Opened: Oct 02, 2015

Severity: 3-Major


Some networking devices block a packet that has a TTL value higher than 230. The TTL value for the BIG-IP system is set to 255 internally and cannot be changed.


No access to the resources.


The issue occurs when traffic originates from the BIG-IP system (as a client).



Fix Information

The TTL value can now be changed from the hardcoded value of 255. This supports the requirement that some networking devices have to block a packet whose TTL value is higher than 230.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips