最近访问某些 DNS 解析出来的 github 的 ip 时，丢包很严重，大家有没遇到过类似的问题？

本地 ping：

 ~ ping github.com PING github.com (192.30.253.112) 56(84) bytes of data. 64 bytes from lb-192-30-253-112-iad.github.com (192.30.253.112): icmp_seq=1 ttl=43 time=262 ms 64 bytes from lb-192-30-253-112-iad.github.com (192.30.253.112): icmp_seq=2 ttl=43 time=260 ms 64 bytes from lb-192-30-253-112-iad.github.com (192.30.253.112): icmp_seq=3 ttl=43 time=263 ms 64 bytes from lb-192-30-253-112-iad.github.com (192.30.253.112): icmp_seq=4 ttl=43 time=264 ms 64 bytes from lb-192-30-253-112-iad.github.com (192.30.253.112): icmp_seq=5 ttl=43 time=249 ms ^C --- github.com ping statistics --- 6 packets transmitted, 5 received, 16% packet loss, time 5003ms rtt min/avg/max/mdev = 249.467/260.035/264.164/5.521 ms 

在线 ping： https://ping.chinaz.com/github.com