PING www.dotup.up_www.mac.net.cn (123.56.134.134) 56(84) bytes of data.
64 bytes from 123.56.134.134 (123.56.134.134): icmp_seq=1 ttl=51 time=263 ms
64 bytes from 123.56.134.134 (123.56.134.134): icmp_seq=2 ttl=51 time=262 ms
64 bytes from 123.56.134.134 (123.56.134.134): icmp_seq=3 ttl=51 time=262 ms

--- www.dotup.up_www.mac.net.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1999ms
rtt min/avg/max/mdev = 262.917/262.996/263.125/0.428 ms