PING www.xuemugong.com (104.21.96.1) 56(84) bytes of data.
64 bytes from 104.21.96.1 (104.21.96.1): icmp_seq=1 ttl=60 time=6.50 ms
64 bytes from 104.21.96.1 (104.21.96.1): icmp_seq=2 ttl=60 time=4.40 ms
64 bytes from 104.21.96.1 (104.21.96.1): icmp_seq=3 ttl=60 time=4.39 ms

--- www.xuemugong.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 4.390/5.099/6.502/0.993 ms