Bug ID 448493: SIP response from the server to the client get dropped

Last Modified: Sep 13, 2023

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

Known Affected Versions:
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 HF1, 11.5.3 HF1, 11.4.0, 11.4.1, 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, 12.1.0 HF1, 12.1.0 HF2, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2

Fixed In:
12.0.0, 11.6.0 HF5, 11.5.3 HF2, 11.4.1 HF9

Opened: Feb 10, 2014

Severity: 3-Major

Related Article: K16091

Symptoms

SIP responses are not forwarded to the client. Instead, the system drops those SIP responses.

Impact

Some SIP flows do not complete, which affects the SIP clients.

Conditions

This occurs when using SIP OneConnect with an iRule that uses the node/snat command in SIP_RESPONSE event in the iRule to direct the SIP response from the server.

Workaround

Remove the node/snat command from SIP_RESPONSE event processing in the iRule.

Fix Information

iRules node/snat command in the iRule SIP_RESPONSE event now works correctly.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips