再外网
ping baidu.com
PING baidu.com (220.181.38.148): 56 data bytes
64 bytes from 220.181.38.148: icmp_seq=0 ttl=51 time=47.593 ms
64 bytes from 220.181.38.148: icmp_seq=1 ttl=51 time=47.314 ms
64 bytes from 220.181.38.148: icmp_seq=2 ttl=51 time=47.786 ms