Bug ID 915853: BIG-IP generates duplicated ACK after SSL Handshake when SSL Session reused

Last Modified: Dec 13, 2023

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

Known Affected Versions:
13.1.3, 13.1.3.1, 13.1.3.2, 13.1.3.3, 13.1.3.4, 13.1.3.5, 13.1.3.6, 13.1.4, 13.1.4.1, 13.1.5, 13.1.5.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 15.1.3, 15.1.3.1, 15.1.4, 15.1.4.1, 15.1.5, 15.1.5.1, 15.1.6, 15.1.6.1, 15.1.7, 15.1.8, 15.1.8.1, 15.1.8.2, 15.1.9, 15.1.9.1, 15.1.10, 15.1.10.2, 15.1.10.3

Opened: Jun 10, 2020

Severity: 4-Minor

Symptoms

The BIG-IP system generates two ACK packets while processing SSL.

Impact

Unnecessary packets are sent on the wire.

Conditions

-- SSL session reuse is enabled. -- SSL application data arrives immediately after the handshake is completed.

Workaround

None.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips