PING ailab.hcmus.edu.vn (115.73.217.121) 56(84) bytes of data.
64 bytes from adsl.viettel.vn (115.73.217.121): icmp_seq=1 ttl=57 time=209 ms
64 bytes from adsl.viettel.vn (115.73.217.121): icmp_seq=2 ttl=57 time=207 ms
64 bytes from adsl.viettel.vn (115.73.217.121): icmp_seq=3 ttl=57 time=206 ms

--- ailab.hcmus.edu.vn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 206.904/207.748/209.245/1.184 ms