PING waf-hd3-stage.cdn.sogou.com (49.51.130.237) 56(84) bytes of data.
64 bytes from 49.51.130.237 (49.51.130.237): icmp_seq=1 ttl=57 time=8.10 ms
64 bytes from 49.51.130.237 (49.51.130.237): icmp_seq=2 ttl=57 time=7.43 ms
64 bytes from 49.51.130.237 (49.51.130.237): icmp_seq=3 ttl=57 time=7.37 ms

--- waf-hd3-stage.cdn.sogou.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 7.378/7.638/8.106/0.346 ms