WireShark告诉你ping百度时都发生了什么

备注:  测试机器为Mac 重点展示本机发出icmp的过程(dns-->arp-->icmp)   本机默认网关 ->route -n get e -n get default route to: default destination: default mask: default gateway: 192.168.0.1 interface: en0 flags: <UP,GATEWAY,DON

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