PING arirang.snu.ac.kr (147.46.240.156) 56(84) bytes of data.
64 bytes from arirang.snu.kr (147.46.240.156): icmp_seq=1 ttl=55 time=264 ms
64 bytes from arirang.snu.kr (147.46.240.156): icmp_seq=2 ttl=55 time=262 ms
64 bytes from arirang.snu.kr (147.46.240.156): icmp_seq=3 ttl=55 time=262 ms

--- arirang.snu.ac.kr ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1999ms
rtt min/avg/max/mdev = 262.518/263.158/264.107/0.802 ms