PING www.daoyoudao.com (39.105.60.42) 56(84) bytes of data.
64 bytes from 39.105.60.42 (39.105.60.42): icmp_seq=1 ttl=48 time=231 ms
64 bytes from 39.105.60.42 (39.105.60.42): icmp_seq=2 ttl=48 time=257 ms
64 bytes from 39.105.60.42 (39.105.60.42): icmp_seq=3 ttl=48 time=278 ms

--- www.daoyoudao.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 231.766/255.812/278.279/19.026 ms