PING www.12306.cn.lxdns.com (111.180.138.108) 56(84) bytes of data.
64 bytes from 111.180.138.108 (111.180.138.108): icmp_seq=1 ttl=50 time=331 ms
64 bytes from 111.180.138.108 (111.180.138.108): icmp_seq=2 ttl=50 time=329 ms
64 bytes from 111.180.138.108 (111.180.138.108): icmp_seq=3 ttl=50 time=330 ms

--- www.12306.cn.lxdns.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 329.203/330.328/331.658/1.116 ms