Bug ID 421612: CGNAT traffic through SIP-ALG will not have outbound connections and addresses logged

Last Modified: Apr 28, 2025

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

Known Affected Versions:
11.3.0, 11.4.0, 11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.1 HF10, 11.5.1 HF11, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.5.4, 11.5.4 HF1, 11.5.4 HF2, 11.5.4 HF3, 11.5.4 HF4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10

Fixed In:
11.6.0

Opened: May 21, 2013

Severity: 2-Critical

Related Article: K14725

Symptoms

Subscriber traffic through the Carrier Grade NAT and SIP-ALG will not have all the addresses and ports used by the subscriber logged.

Impact

Some subscriber traffic will not have translation addresses logged as expected.

Conditions

CGNAT and SIP-ALG configured and subscriber sending SIP traffic.

Workaround

None

Fix Information

None

Behavior Change

ALG now has an option enabled with a db var to log the messages and media/data connections so that they can be traced to an LSN subscriber.

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips