你们是这样么???
$ ping www.baidu.com
PING www.a.shifen.com (180.76.3.151): 56 data bytes
Request timeout for icmp_seq 0
Request timeout for icmp_seq 1
^C
--- www.a.shifen.com ping statistics ---
3 packets transmitted, 0 packets received, 100.0% packet loss
$ ping baidu.com
PING baidu.com (220.181.111.86): 56 data bytes
64 bytes from 220.181.111.86: icmp_seq=0 ttl=50 time=6.063 ms
64 bytes from 220.181.111.86: icmp_seq=1 ttl=50 time=7.218 ms
64 bytes from 220.181.111.86: icmp_seq=2 ttl=50 time=6.856 ms
^C
--- baidu.com ping statistics ---
3 packets transmitted, 3 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 6.063/6.712/7.218/0.482 ms
$ ping www.baidu.com
PING www.a.shifen.com (180.76.3.151): 56 data bytes
Request timeout for icmp_seq 0
Request timeout for icmp_seq 1
^C
--- www.a.shifen.com ping statistics ---
3 packets transmitted, 0 packets received, 100.0% packet loss
$ ping baidu.com
PING baidu.com (220.181.111.86): 56 data bytes
64 bytes from 220.181.111.86: icmp_seq=0 ttl=50 time=6.063 ms
64 bytes from 220.181.111.86: icmp_seq=1 ttl=50 time=7.218 ms
64 bytes from 220.181.111.86: icmp_seq=2 ttl=50 time=6.856 ms
^C
--- baidu.com ping statistics ---
3 packets transmitted, 3 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 6.063/6.712/7.218/0.482 ms