nslookup命令
yum -y install bind-utils
[root@iZ1i4qd6oynml0Z ~]# nslookup github.global.ssl.fastly.Net
Server: 100.100.2.136
Address: 100.100.2.136#53
Non-authoritative answer:
Name: github.global.ssl.fastly.Net
Address: 199.59.149.244
;; Got SERVFAIL reply from 100.100.2.136, trying next server
** server can't find github.global.ssl.fastly.Net: SERVFAIL
[root@iZ1i4qd6oynml0Z ~]# nslookup github.com
Server: 100.100.2.136
Address: 100.100.2.136#53
Non-authoritative answer:
Name: github.com
Address: 13.229.188.59
vim /etc/hosts，修改host，加入下面代码：
199.59.149.244 github.global.ssl.fastly.net
13.229.188.59 github.com
刷新网络设置
/etc/init.d/network restart
虽然还是只有20kb/s，但比5kb/s好多了