PING vietnamlit.org (138.197.46.228) 56(84) bytes of data.
64 bytes from vietnamlit.org (138.197.46.228): icmp_seq=1 ttl=56 time=81.9 ms
64 bytes from vietnamlit.org (138.197.46.228): icmp_seq=2 ttl=56 time=78.6 ms
64 bytes from vietnamlit.org (138.197.46.228): icmp_seq=3 ttl=56 time=78.5 ms

--- vietnamlit.org ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 78.558/79.689/81.911/1.604 ms