Bug ID 633400: Deterministic NAT configuration log may be truncated

Last Modified: Sep 13, 2023

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

Known Affected Versions:
11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.2, 11.5.3, 11.5.4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 11.6.0, 11.6.1, 11.6.2, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3, 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, 12.1.2, 12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 12.1.3.7, 12.1.4, 12.1.4.1, 12.1.5, 12.1.5.1, 12.1.5.2, 12.1.5.3, 12.1.6, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1

Fixed In:
13.1.0

Opened: Dec 14, 2016

Severity: 3-Major

Symptoms

Deterministic NAT configuration log may be truncated. The "src" line of the configuration log may be truncated at 250 characters, even if the list of source ranges exceeds 250 characters.

Impact

Reverse mapping using the dnatutil tool may fail.

Conditions

Deterministic NAT with many source ranges in use, and DNAT configuration logged to /var/log/ltm.

Workaround

The reverse mapping can still be done if the configuration text is manually edited to include all source ranges in use. This can be done by moving the configuration text into a separate file, and editing the "src" line to include all addresses in use. Using the edited configuration, dnatutil will return the correct result.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips