![使用自定义 tun 接口时 OS X DNS 查询失败](https://linux22.com/image/1466884/%E4%BD%BF%E7%94%A8%E8%87%AA%E5%AE%9A%E4%B9%89%20tun%20%E6%8E%A5%E5%8F%A3%E6%97%B6%20OS%20X%20DNS%20%E6%9F%A5%E8%AF%A2%E5%A4%B1%E8%B4%A5.png)
我有一个针对 OS X 10.10.5 的稍作修改的 tun/tap 版本正在运行。该接口由一个小型 Python 脚本启动,该脚本读取/dev/tun
所有请求,然后通过临时连接转发这些请求。启动接口时,我手动将 IP 设置为10.0.0.1
子网掩码:255.255.255.0
和 DNS:。8.8.8.8
但是,每当我尝试执行 DNS 请求时,它都会告诉我连接超时,而且我从未在 WireShark 中看到发出的 DNS 查询。我的目标是路由所有流量,/dev/tun
但无法弄清楚 DNS 为何不起作用。以下是我当前的路由:
$ netstat -r
Routing tables
Internet:
Destination Gateway Flags Refs Use Netif Expire
default 10.0.0.1 UGSc 3 0 tun0
default link#6 UCSI 2 0 en0
10.0.0.1 10.0.0.1 UHr 5 2 tun0
17.155.127.222 link#6 UHRLWI 0 60 en0 10
17.155.127.223 link#6 UHRLWIi 2 30 en0 10
127 localhost UCS 0 0 lo0
localhost localhost UH 3 235135 lo0
169.254 link#6 UCS 3 0 en0
rivera.local link#6 UHLSW 1 1 en0
iphone-2.local b4:18:d1:5b:57:98 UHLSW 1 10 en0 1195
169.254.185.223/32 link#6 UCS 0 0 en0
169.254.255.255 ff:ff:ff:ff:ff:ff UHLWb 0 23 en0
Internet6:
Destination Gateway Flags Netif Expire
:: link#6 UC en0
default tun0 USc tun0
:: fe80::62f8:1dff:fe UcI tun0
localhost localhost UHL lo0
::ffff:10.0.0.1 link#15 UHL lo0
::ffff:10.0.0.1 link#6 UHLWI en0
rivera.local 60:f8:1d:cc:24:14 UHL lo0
fe80::%lo0 fe80::1%lo0 UcI lo0
fe80::1%lo0 link#1 UHLI lo0
fe80::%en0 link#6 UCI en0
iphone-2.local b4:18:d1:5b:57:98 UHLWIi en0
rivera.local 60:f8:1d:cc:24:14 UHLI lo0
fe80::%tun0 fe80::62f8:1dff:fe UcI tun0
fe80::62f8:1dff:fe link#15 UHLI lo0
fe80::%utun0 fe80::4570:eb3:1c6 UcI utun0
fe80::4570:eb3:1c6 link#16 UHLI lo0
ff01::%lo0 localhost UmCI lo0
ff01::%en0 link#6 UmCI en0
ff01::%en6 link#11 UmCI en6
ff01::%tun0 fe80::62f8:1dff:fe UmCI tun0
ff01::%utun0 fe80::4570:eb3:1c6 UmCI utun0
ff02::%lo0 localhost UmCI lo0
ff02::%en0 link#6 UmCI en0
ff02::%en6 link#11 UmCI en6
ff02::%tun0 fe80::62f8:1dff:fe UmCI tun0
ff02::%utun0 fe80::4570:eb3:1c6 UmCI utun0
我在“系统偏好设置”->“网络”下指定了 DNS 服务器(8.8.8.8),但运行时$ scutil --dns
没有显示任何内容resolver #1
DNS configuration
resolver #1
resolver #2
domain : local
options : mdns
timeout : 5
order : 300000
resolver #3
domain : 254.169.in-addr.arpa
options : mdns
timeout : 5
order : 300200
resolver #4
domain : 8.e.f.ip6.arpa
options : mdns
timeout : 5
order : 300400
resolver #5
domain : 9.e.f.ip6.arpa
options : mdns
timeout : 5
order : 300600
resolver #6
domain : a.e.f.ip6.arpa
options : mdns
timeout : 5
order : 300800
resolver #7
domain : b.e.f.ip6.arpa
options : mdns
timeout : 5
order : 301000
有人能告诉我为什么 DNS 不工作吗?