Bug ID 423584: Client connection in the middle of closing and SIP message from server attempts to connect to client using same tuple fails with ERR_PORT

Last Modified: Apr 11, 2023

Affected Product(s):
BIG-IP None(all modules)

Known Affected Versions:
11.1.0, 11.2.0, 11.2.1, 11.3.0, 11.4.0, 11.4.1

Fixed In:
11.5.0, 11.4.1 HF2, 11.4.0 HF4, 11.3.0 HF9, 11.2.1 HF11

Opened: Jun 19, 2013

Severity: 3-Major


SIP OneConnect Configuration using irules and TCP. Failure to send response results in connections getting RST


Server and Client connections are terminated.


Server tries to send response and client is in LAST_ACK state.



Fix Information

The SIP filter state machine behavior is modified to support this error condition.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips