PING izy.cn (104.21.72.97) 56(84) bytes of data.
64 bytes from 104.21.72.97 (104.21.72.97): icmp_seq=1 ttl=60 time=5.74 ms
64 bytes from 104.21.72.97 (104.21.72.97): icmp_seq=2 ttl=60 time=4.20 ms
64 bytes from 104.21.72.97 (104.21.72.97): icmp_seq=3 ttl=60 time=4.17 ms

--- izy.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 4.175/4.708/5.746/0.737 ms