PING bili01cdn02.cdn.dun555.com (156.251.205.47) 56(84) bytes of data.
64 bytes from 156.251.205.47 (156.251.205.47): icmp_seq=1 ttl=54 time=246 ms
64 bytes from 156.251.205.47 (156.251.205.47): icmp_seq=2 ttl=54 time=246 ms
64 bytes from 156.251.205.47 (156.251.205.47): icmp_seq=3 ttl=54 time=246 ms

--- bili01cdn02.cdn.dun555.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 246.511/246.635/246.838/0.144 ms