Birkhoffs-MBPR:~ birkhoff$ ping 147.8.9.21
PING 147.8.9.21 (147.8.9.21): 56 data bytes
Request timeout for icmp_seq 0
Request timeout for icmp_seq 1
Request timeout for icmp_seq 2
Request timeout for icmp_seq 3
Request timeout for icmp_seq 4
Request timeout for icmp_seq 5
Request timeout for icmp_seq 6
Request timeout for icmp_seq 7
Request timeout for icmp_seq 8
Request timeout for icmp_seq 9
Request timeout for icmp_seq 10
^C
—- 147.8.9.21 ping statistics —-
12 packets transmitted, 0 packets received, 100.0% packet loss