The addresses, encapsulated as source and destination in the IP datagrams header, are used to transmit the datagram to their destination, called routing. Basically, this creates two scenarios
地址（在 IP 数据报头中封装为源和目的地地址）用来将数据报传输到其目的地，这个过程称为 路由。
Make an IP address from the source address and routing of data sent to the destination address may become.
一个IP地址使得将来自源地址的数据通过路由而传送到目的地址变为可能。
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