PING kmu.ac.kr (203.247.29.160) 56(84) bytes of data.
64 bytes from m.kmu.ac.kr (203.247.29.160): icmp_seq=1 ttl=52 time=251 ms
64 bytes from m.kmu.ac.kr (203.247.29.160): icmp_seq=2 ttl=52 time=250 ms
64 bytes from m.kmu.ac.kr (203.247.29.160): icmp_seq=3 ttl=52 time=250 ms

--- kmu.ac.kr ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2631ms
rtt min/avg/max/mdev = 250.061/250.628/251.733/0.971 ms