PING linux.co.kr (210.127.209.115) 56(84) bytes of data.
64 bytes from mail.suidc.com (210.127.209.115): icmp_seq=1 ttl=54 time=274 ms
64 bytes from mail.suidc.com (210.127.209.115): icmp_seq=2 ttl=54 time=265 ms
64 bytes from mail.suidc.com (210.127.209.115): icmp_seq=3 ttl=54 time=265 ms

--- linux.co.kr ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 265.086/268.263/274.448/4.394 ms