PING 10.138.21.66 (10.138.21.66) 56(84) bytes of data.
64 bytes from 10.138.21.66: icmp_req=1 ttl=55 time=30.5 ms
64 bytes from 10.138.21.66: icmp_req=2 ttl=55 time=37.6 ms
64 bytes from 10.138.21.66: icmp_req=3 ttl=55 time=24.7 ms
64 bytes from 10.138.21.66: icmp_req=4 ttl=55 time=42.5 ms
64 bytes from 10.138.21.66: icmp_req=5 ttl=55 time=51.6 ms

--- 10.138.21.66 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 3998ms
rtt min/avg/max/mdev = 24.722/37.414/51.615/9.334 ms