PING yun-pc.com (172.80.15.91) 56(84) bytes of data.
64 bytes from 172.80.15.91 (172.80.15.91): icmp_seq=1 ttl=116 time=141 ms
64 bytes from 172.80.15.91 (172.80.15.91): icmp_seq=2 ttl=116 time=139 ms
64 bytes from 172.80.15.91 (172.80.15.91): icmp_seq=3 ttl=116 time=139 ms

--- yun-pc.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 139.050/139.747/141.137/0.982 ms