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An accelerated flow can send to a stale destination MAC address after the ARP packet with the updated MAC address is received. Warning: disabling auto-lasthop is not enough when they want BIG-IP to use updated destination MAC address.
The BIG-IP system sends packets to a stale (incorrect) destination MAC address. In this case, the new MAC address is not updated for the accelerated flow and the flow will continue to send traffic using the original MAC address.
A flow is accelerated with a destination MAC address that changes while the flow is accelerated.
Disable HW acceleration. Prevent the downstream destination MAC address from changing. For example, if the downstream unit is a BIG-IP active/standby configuration, then use MAC masquerading to prevent the MAC address from changing.
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