PING mokpo.ac.kr (202.20.99.9) 56(84) bytes of data.
64 bytes from 202.20.99.9 (202.20.99.9): icmp_seq=1 ttl=52 time=263 ms
64 bytes from 202.20.99.9 (202.20.99.9): icmp_seq=2 ttl=52 time=260 ms
64 bytes from 202.20.99.9 (202.20.99.9): icmp_seq=3 ttl=52 time=263 ms

--- mokpo.ac.kr ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2099ms
rtt min/avg/max/mdev = 260.913/262.797/263.927/1.466 ms