PING mmlab.snu.ac.kr (147.46.114.27) 56(84) bytes of data.
64 bytes from mmlab.snu.ac.kr (147.46.114.27): icmp_seq=1 ttl=53 time=253 ms
64 bytes from mmlab.snu.ac.kr (147.46.114.27): icmp_seq=2 ttl=53 time=253 ms
64 bytes from mmlab.snu.ac.kr (147.46.114.27): icmp_seq=3 ttl=53 time=252 ms

--- mmlab.snu.ac.kr ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2200ms
rtt min/avg/max/mdev = 252.284/252.905/253.331/0.449 ms