PING lzx100.cn (104.21.55.42) 56(84) bytes of data.
64 bytes from 104.21.55.42 (104.21.55.42): icmp_seq=1 ttl=59 time=4.81 ms
64 bytes from 104.21.55.42 (104.21.55.42): icmp_seq=2 ttl=59 time=4.57 ms
64 bytes from 104.21.55.42 (104.21.55.42): icmp_seq=3 ttl=59 time=4.61 ms

--- lzx100.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 4.574/4.668/4.818/0.132 ms