In which situation can ARP entries be learned after strict ARP learning is enabled

If strict ARP learning is enabled, a device does not learn ARP entries matching source IP addresses after receiving ARP request packets. The device updates an ARP entry matching the source IP address in a packet only when the device receives an ARP reply packet, the destination IP address of the ARP reply packet is the device address, and there is an ARP entry, temporary ARP entry, or actual ARP entry matching the source IP address.

The device must send an ARP request packet to the source end. After receiving an ARP reply packet, the device learns the ARP entry matching the source end.

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