Bug ID 836661: Incorrect source MAC used when the BIG-IP system in L2 transparent mode generates a TCP RST packet.

Last Modified: Apr 17, 2024

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

Known Affected Versions:
14.1.2,,, 15.0.0, 15.0.1,,,,, 15.1.0,,,,,, 15.1.1, 15.1.2,, 15.1.3,, 15.1.4,, 15.1.5,, 15.1.6,, 15.1.7, 15.1.8,,, 15.1.9,, 15.1.10,,,

Fixed In:

Opened: Oct 10, 2019

Severity: 3-Major


Packet with unexpected source MAC is seen on the adjacent node to the BIG-IP system.


Incorrect source MAC is used. Possible impacts to services on nodes adjacent to the BIG-IP system if policy decisions on those nodes are made with the source MAC of the received packet as input.


-- The BIG-IP system is configured in an L2 transparent mode using virtual wires. -- Traffic forwarded between client and server in an asymmetric manner across virtual wires.



Fix Information


Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips