PING cudo.cn (121.42.108.20) 56(84) bytes of data.
64 bytes from 121.42.108.20 (121.42.108.20): icmp_seq=1 ttl=43 time=255 ms
64 bytes from 121.42.108.20 (121.42.108.20): icmp_seq=2 ttl=43 time=255 ms
64 bytes from 121.42.108.20 (121.42.108.20): icmp_seq=3 ttl=43 time=256 ms

--- cudo.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 255.389/255.855/256.382/0.580 ms