| 摘要 |
In the present invention, the source node broadcasts an ARP request on multiple interfaces, wherein the ARP request asks for the hardware address of a node whose link local IPv4 address is Y. Next, the source node receives an ARP reply packet on interface Z1 from a target network node whose link local IPv4 address is Y and whose hardware address is X. If Y is not present in the ARP cache of the source node, an entry is added to the ARP cache, which specifies that IP address Y is at the hardware address X on interface Z1. If Y is already present in the ARP cache of the source node and is associated with a different interface Z2, the source node chooses a winner interface out of Z1 and Z2. If interface Z1 is chosen, the source node updates the ARP cache so that it specifies that IP address Y is at the hardware address X on interface Z1. Finally, the source node sends a contention resolution packet on the loser interface to cause the loser node to choose another link local IPv4 address for itself.
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