PING 10.139.21.66 (10.139.21.66) 56(84) bytes of data.
64 bytes from 10.139.21.66: icmp_req=1 ttl=58 time=20.1 ms
64 bytes from 10.139.21.66: icmp_req=2 ttl=58 time=14.9 ms
64 bytes from 10.139.21.66: icmp_req=3 ttl=58 time=19.5 ms
64 bytes from 10.139.21.66: icmp_req=4 ttl=58 time=10.2 ms
64 bytes from 10.139.21.66: icmp_req=5 ttl=58 time=15.2 ms

--- 10.139.21.66 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4003ms
rtt min/avg/max/mdev = 10.271/16.031/20.176/3.589 ms