何回やってもこんな感じ。
~> ping -c3 207.29.253.225
PING 207.29.253.225 (207.29.253.225): 56 data bytes
64 bytes from 207.29.253.225: icmp_seq=0 ttl=246 time=145.894 ms
64 bytes from 207.29.253.225: icmp_seq=1 ttl=246 time=145.923 ms
64 bytes from 207.29.253.225: icmp_seq=2 ttl=246 time=145.836 ms

--- 207.29.253.225 ping statistics ---
3 packets transmitted, 3 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 145.836/145.884/145.923/0.036 ms