Last Modified: Jun 25, 2026
Affected Product(s):
F5OS F5OS-C
Known Affected Versions:
F5OS-C 1.8.2
Opened: Jan 30, 2026 Severity: 3-Major
A rare race condition in the vcc-lacpd process can prevent a system controller failover correctly setting the LACP status for LACP based link aggregations. This condition is easily identifiable if the log msgid=0x6602000000000003 originating from vcc-lacpd process is seen since the last controller reboot.
Blade management network can be impacted which can cause a variety of issues, including blade reboot loops on partition upgrade. If a management aggregation on the controller front panel management ports is configured for LACP, this aggregation may also be impacted.
Controller reboot. It is more likely though still extremely rare to occur if vcc-lacpd process restarts independently of a controller reboot.
Restart the affected vcc-lacpd process via docker restart cc-lacpd.
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