Through aborative observation, we found that the Neighbor Cache entry with the new link-layer address overwrites the old.
通过仔细观察，我们发现新链路层地址的邻居缓存条目会覆盖旧的条目。
Neighbor Solicitation messages are sent to discover the link-layer address of a neighbor or to verify that a neighbor is still reachable via a cached link-layer address.
传送“近邻请求”讯息是为了探索邻居的连结层位址，或是透过快取的连结层位址验证仍然可以与邻居连线。
A mobile node can always communicate with other nodes via its home address whether it is on its home link or foreign link, and the connections of transport layer and higher layer will not be broken.
不论移动节点位于家乡网络还是外地网络，它都可以使用家乡地址和其他节点相互通讯，这样传输层和更高层的连接不会被打断。
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