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=16.0 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=15.5 ms

--- overdue.aliyun.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 15.517/15.786/16.097/0.259 ms