PING ioer.snu.ac.kr (147.47.206.58) 56(84) bytes of data.
64 bytes from ioer.snu.ac.kr (147.47.206.58): icmp_seq=1 ttl=53 time=265 ms
64 bytes from ioer.snu.ac.kr (147.47.206.58): icmp_seq=2 ttl=53 time=267 ms
64 bytes from ioer.snu.ac.kr (147.47.206.58): icmp_seq=3 ttl=53 time=272 ms

--- ioer.snu.ac.kr ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 265.357/268.458/272.295/2.879 ms