奇怪的是，我可以从客户操作系统访问所有网站，但是bitbucket.org，同时可以从主机操作系统访问它。
知道为什么吗？
正在 ping：
vagrant@cabinet:~/app$ ping google.com
PING google.com (173.194.32.136) 56(84) bytes of data.
64 bytes from 173.194.32.136: icmp_seq=1 ttl=63 time=2.68 ms
64 bytes from 173.194.32.136: icmp_seq=2 ttl=63 time=4.89 ms
64 bytes from 173.194.32.136: icmp_seq=3 ttl=63 time=6.51 ms
64 bytes from 173.194.32.136: icmp_seq=4 ttl=63 time=6.14 ms
^C
--- google.com ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3011ms
rtt min/avg/max/mdev = 2.689/5.059/6.513/1.495 ms
vagrant@cabinet:~/app$ ping superuser.com
PING superuser.com (198.252.206.16) 56(84) bytes of data.
64 bytes from stackoverflow.com (198.252.206.16): icmp_seq=1 ttl=63 time=143 ms
64 bytes from stackoverflow.com (198.252.206.16): icmp_seq=2 ttl=63 time=137 ms
64 bytes from stackoverflow.com (198.252.206.16): icmp_seq=3 ttl=63 time=139 ms
^C
--- superuser.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2005ms
rtt min/avg/max/mdev = 137.228/140.307/143.958/2.810 ms
vagrant@cabinet:~/app$ ping bitbucket.org
ping: unknown host bitbucket.org
查找：
vagrant@cabinet:~/app$ nslookup bitbucket.org
Server: 10.0.2.3
Address: 10.0.2.3#53
** server can't find bitbucket.org: SERVFAIL
vagrant@cabinet:~/app$ nslookup google.com
Server: 10.0.2.3
Address: 10.0.2.3#53
Non-authoritative answer:
Name: google.com
Address: 173.194.32.129
Name: google.com
Address: 173.194.32.137
...
答案1
如果您无法解析 bitbucket.org，那么很可能是您的 DNS 服务器有问题。要验证这一点，只需从另一个 DNS 服务器进行查询，如下所示：
nslookup bitbucket.org 8.8.8.8