Each data packet sent over the Internet contains information about its source and its destination.
每一个通过因特网传递的数据包都包含有它的来源和目的地。
If the destination address is not in the routing table, the packet is dropped.
如果其目的地址不在这个路由表里，路由器就将数据包丢弃。
If the destination address is not in the routing table, the packet is dropped.
如果其目的地址不在这个路由表里，路由器就将数据包丢弃。
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