PING rvcr.yaoyuji.com (156.254.144.175) 56(84) bytes of data.
64 bytes from 156.254.144.175 (156.254.144.175): icmp_seq=1 ttl=53 time=262 ms
64 bytes from 156.254.144.175 (156.254.144.175): icmp_seq=2 ttl=53 time=262 ms
64 bytes from 156.254.144.175 (156.254.144.175): icmp_seq=3 ttl=53 time=262 ms

--- rvcr.yaoyuji.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 262.043/262.478/262.715/0.667 ms