# cat /etc/resolv.conf
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN 注意看：
1 /etc/resolv.conf 其实是一个Link
它其实指向的是 /run/resolvconf/resolv.conf
3 如果想自己定义 nameserver，那么有以下2个办法：
A 在网卡的配置文件/etc/network/interfaces 里面加：
dns-nameservers 192.168.3.45 192.168.8.10
dns-search foo.org bar.com
重启网络
sudo service networking restart 或者 sudo /etc/init.d/networking restart
也可以重启网卡
sudo ifconfig eth0 down
sudo ifconfig eth0 up
B 修改 resolvconf服务的配置文件: /etc/resolvconf/resolv.conf.d/base
echo "search test.com" >> /etc/resolvconf/resolv.conf.d/base
echo "nameserver 202.106.0.20 " >> /etc/resolvconf/resolv.conf.d/base
这样，在机器重启或 resolvconf 服务重启 都可以保证配置会写到/etc/resolv.conf 里面
重启 resolvconf 服务
service resolvconf restart
A比B的优先级更高,,不过可能会断网.
