root@r5c:~# ping -c 5 www.qq.com
PING www.qq.com (2409:8c54:871:2::34): 56 data bytes
64 bytes from 2409:8c54:871:2::34: seq=0 ttl=55 time=8.242 ms
64 bytes from 2409:8c54:871:2::34: seq=1 ttl=55 time=9.048 ms
64 bytes from 2409:8c54:871:2::34: seq=2 ttl=55 time=8.186 ms
64 bytes from 2409:8c54:871:2::34: seq=3 ttl=55 time=8.000 ms
64 bytes from 2409:8c54:871:2::34: seq=4 ttl=55 time=8.040 ms