PING dvn.vn (45.251.114.15) 56(84) bytes of data.
64 bytes from 45.251.114.15 (45.251.114.15): icmp_seq=1 ttl=51 time=266 ms
64 bytes from 45.251.114.15 (45.251.114.15): icmp_seq=2 ttl=51 time=266 ms
64 bytes from 45.251.114.15 (45.251.114.15): icmp_seq=3 ttl=51 time=266 ms

--- dvn.vn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 266.605/266.636/266.673/0.422 ms