Bug ID 1307517: Allow SIP reply with missing FROM

Last Modified: May 29, 2024

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

Fixed In:
17.1.1

Opened: Jun 15, 2023

Severity: 3-Major

Symptoms

SIP Reply with a missing FROM in the header is dropped.

Impact

SIP reply drop impacts the client not getting a response.

Conditions

- SIP header not compliant with RFC requirement that a FROM must be present.

Workaround

None

Fix Information

Set allow-unknown-methods to be enabled in the SIP session profile, which relaxes the SIP parser to allow unknown SIP messages to be used.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips