Bug ID 643879: NAT64 Hairpin connections can be incorrectly logged using NAT44 log templates

Last Modified: Nov 07, 2022

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

Known Affected Versions:
13.1.0, 13.1.0.1, 13.1.0.2, 13.1.0.3, 13.1.0.4, 13.1.0.5, 13.1.0.6, 13.1.0.7, 13.1.0.8, 13.1.1, 13.1.1.2, 13.1.1.3, 13.1.1.4, 13.1.1.5, 13.1.3, 13.1.3.1, 13.1.3.2, 13.1.3.3, 13.1.3.4, 13.1.3.5, 13.1.3.6, 13.1.4, 13.1.4.1, 13.1.5, 13.1.5.1

Fixed In:
14.0.0

Opened: Feb 08, 2017

Severity: 3-Major

Symptoms

NAT64 Hairpin connections are incorrectly logged using the NAT44 Session Create/Delete (outbound variant) templates.

Impact

Some information, such as the source IP address, may be malformed and/or missing from logs.

Conditions

The issue will occur when NAT64 hairpin connections are logged via syslog or IPFIX.

Workaround

None.

Fix Information

NAT64 hairpin connections now correctly use NAT64 logging template instead of NAT44 logging template.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips