Bug ID 812705: 'translate-address disabled' setting for LTM virtual server does not have any effect with iRules for NAT64 traffic

Last Modified: May 29, 2024

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

Known Affected Versions:
14.1.0,,,,,, 14.1.2,,,,,,,,, 14.1.3,, 14.1.4,,,,,,, 14.1.5,,,,,, 15.0.0, 15.0.1,,,,, 15.1.0,,,,,, 15.1.1, 15.1.2,, 15.1.3,, 15.1.4,, 15.1.5,, 15.1.6,, 15.1.7, 15.1.8,,, 15.1.9,, 15.1.10,,,

Fixed In:

Opened: Aug 06, 2019

Severity: 3-Major


IPv4 Packets are forwarded to server-side with destination address changed to LTM pool member address even when 'translate-address disabled' is configured on a NAT64 virtual server.


Server-side IPv4 packets are forwarded with destination address modified. The server-side packets do not reach the intended destination, resulting in connection failures.


-- Create iRules for LTM pool selection. -- Configure the NAT64 virtual server with 'translate-address disabled'. -- Send IPv6 client request accessing the NAT64 virtual server.


Use normal LTM pool selection instead of iRules-based, LTM pool selection.

Fix Information


Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips