PING ustc.org (199.58.177.202) 56(84) bytes of data.
64 bytes from 199.58.177.202 (199.58.177.202): icmp_seq=1 ttl=50 time=102 ms
64 bytes from 199.58.177.202 (199.58.177.202): icmp_seq=2 ttl=50 time=101 ms
64 bytes from 199.58.177.202 (199.58.177.202): icmp_seq=3 ttl=50 time=99.9 ms

--- ustc.org ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 99.998/101.406/102.428/1.028 ms