PING dis.dankook.ac.kr (220.149.232.78) 56(84) bytes of data.
64 bytes from 220.149.232.78 (220.149.232.78): icmp_seq=1 ttl=46 time=255 ms
64 bytes from 220.149.232.78 (220.149.232.78): icmp_seq=2 ttl=46 time=254 ms
64 bytes from 220.149.232.78 (220.149.232.78): icmp_seq=3 ttl=46 time=254 ms

--- dis.dankook.ac.kr ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 254.745/254.993/255.476/0.341 ms