PING hs.ac.kr (203.252.23.147) 56(84) bytes of data.
64 bytes from life.hs.ac.kr (203.252.23.147): icmp_seq=1 ttl=53 time=256 ms
64 bytes from life.hs.ac.kr (203.252.23.147): icmp_seq=2 ttl=53 time=260 ms
64 bytes from life.hs.ac.kr (203.252.23.147): icmp_seq=3 ttl=53 time=260 ms

--- hs.ac.kr ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2594ms
rtt min/avg/max/mdev = 256.876/259.278/260.634/1.753 ms