PING 10.138.163.21 (10.138.163.21) 56(84) bytes of data.
64 bytes from 10.138.163.21: icmp_req=1 ttl=57 time=22.1 ms
64 bytes from 10.138.163.21: icmp_req=2 ttl=57 time=7.44 ms
64 bytes from 10.138.163.21: icmp_req=3 ttl=57 time=25.3 ms
64 bytes from 10.138.163.21: icmp_req=4 ttl=57 time=12.9 ms
64 bytes from 10.138.163.21: icmp_req=5 ttl=57 time=8.59 ms

--- 10.138.163.21 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4001ms
rtt min/avg/max/mdev = 7.441/15.299/25.356/7.210 ms