PING gunsan.ac.kr (175.106.84.220) 56(84) bytes of data.
64 bytes from 175.106.84.220 (175.106.84.220): icmp_seq=1 ttl=50 time=259 ms
64 bytes from 175.106.84.220 (175.106.84.220): icmp_seq=2 ttl=50 time=258 ms
64 bytes from 175.106.84.220 (175.106.84.220): icmp_seq=3 ttl=50 time=258 ms

--- gunsan.ac.kr ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 258.742/258.968/259.369/0.503 ms