PING 10.138.21.193 (10.138.21.193) 56(84) bytes of data.
64 bytes from 10.138.21.193: icmp_req=1 ttl=58 time=8.72 ms
64 bytes from 10.138.21.193: icmp_req=2 ttl=58 time=13.2 ms
64 bytes from 10.138.21.193: icmp_req=3 ttl=58 time=12.9 ms
64 bytes from 10.138.21.193: icmp_req=4 ttl=58 time=28.8 ms
64 bytes from 10.138.21.193: icmp_req=5 ttl=58 time=7.16 ms

--- 10.138.21.193 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 3998ms
rtt min/avg/max/mdev = 7.167/14.191/28.827/7.690 ms