Bug ID 2077357: Virtual-wire with proxy listener may generate packets with 00:00:00:00:00:00 source MAC.

Last Modified: Oct 15, 2025

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

Known Affected Versions:
17.1.0, 17.1.0.1, 17.1.0.2, 17.1.0.3, 17.1.1, 17.1.1.1, 17.1.1.2, 17.1.1.3, 17.1.1.4, 17.1.2, 17.1.2.1, 17.1.2.2, 17.1.3, 17.5.0, 17.5.1, 17.5.1.2, 17.5.1.3

Opened: Sep 24, 2025

Severity: 4-Minor

Symptoms

In a case where a proxy listener intercepts traffic going over a virtual-wire and there is no server-side traffic (TCP re-transmit timeout), a RST generated towards the server might have 00:00:00:00:00:00 source MAC.

Impact

RST might not be delivered to the server.

Conditions

Proxy listener intercepts traffic going over a virtual-wire. There is no server-side traffic for the flow.

Workaround

None

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips