PING overdue.aliyun.com (170.33.12.185) 56(84) bytes of data.
64 bytes from 170.33.12.185 (170.33.12.185): icmp_seq=1 ttl=57 time=15.9 ms
64 bytes from 170.33.12.185 (170.33.12.185): icmp_seq=2 ttl=57 time=15.7 ms
64 bytes from 170.33.12.185 (170.33.12.185): icmp_seq=3 ttl=57 time=15.9 ms

--- overdue.aliyun.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1999ms
rtt min/avg/max/mdev = 15.777/15.886/15.966/0.166 ms