黑五期间购买了一台机器，使用的非常好，就是遇到一个问题，就是过一段时间老是IP不通，后来咨询后才知道说是什么：Our DHCP server assign IP address based on MAC address.Please configure IP address statically.#也就是需要自己配置静态地址，
配置文件：/etc/network/interfacer
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
auto eth0
iface eth0 inet static
address x.x.114.106 #
network x.x.114.96 #
netmask 255.255.255.224 #
gateway x.x.114.97 #
dns-nameservers 8.8.8.8 8.8.4.4 114.114.114.114
iface eth0 inet6 static
pre-up modprobe ipv6
address x:x:8000:12::2 #
netmask 64 #
gateway x:x:8000:12::1 #
dns-nameservers 2001:4860:4860::8888 2001:4860:4860::8844
上边带#的ipv4或者ipv6服务商都会提供给你，添加进去就可以了
service networking restart
设置DNS
linux系统的DNS信息是保存在/etc/resolv.conf , 但是在ubuntu中用vim打开这个文件你会发现有如下文字的提示
DO NOT EDIT THIS FILE BY HAND — YOUR CHANGES WILL BE OVERWRITTEN
所以不能直接个性这个文件，这个内容可能会被覆盖
在ubuntu中dns信息是放在/etc/resolvconf/resolv.conf.d/目录下
一般情况下这个目录下有base和head两个文件夹
vim /etc/resolvconf/resolv.conf.d/base
保存后执行
用以下命令使网络设置生效
service networking restart
sudo /etc/init.d/networking restart
