Bug ID 681070: NAT66 may fail if configured with a single translation address

Last Modified: Jul 12, 2023

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

Known Affected Versions:
13.1.0,,,,,,,,, 13.1.1,,,,, 13.1.3,,,,,,, 13.1.4,, 13.1.5,

Fixed In:

Opened: Aug 31, 2017

Severity: 3-Major


When the number of addresses configured on an lsn-pool or source-translation object is fewer than the number of tmms in the system, there a chance for the outbound connection's translation to fail.


Sub-optimal performance. May cause functional/validation tests to fail.


NAT66 configured with a single translation address configured in the lsn-pool or source-translation object.


Configure at least as many translation addresses on your lsn-pool or source-translation object as there are tmms on the BIG-IP system.

Fix Information

NAT66 translations no longer fails when only a single translation address is configured.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips