功能： DNSMASQ是一款高性能的、小型的DNS服务器软件。
* 缓存域名、IP地址，本地缓存解析的地址。
* DHCP服务
1.安装
sudo apt-get update
sudo apt-get install dnsmasq
2.配置
(1) 配置/etc/dnsmasq.conf
# dnsmasq.conf for raspberry pi
# /etc/dnsmasq.conf
# http://www.thekelleys.org.uk/dnsmasq/docs/dnsmasq.conf.example# Set up your local domain here
domain=raspberry.local
resolv-file=/etc/resolv.conf
min-port=4096
server=8.8.8.8
server=8.8.4.4# Max cache size dnsmasq can give us, and we want all of it!
cache-size=10000# Below are settings for dhcp. Comment them out if you dont want
# dnsmasq to serve up dhcpd requests.
# dhcp-range=192.168.0.100,192.168.0.149,255.255.255.0,1440m
# dhcp-option=3,192.168.0.1
(2) 配置 /etc/resolv.conf
# Generated by resolvconf
nameserver 127.0.0.1
可以自己增加nameserver ip 地址。
3.使用
启动：sudo service dnsmasq restart
树莓派中设置hostname为pi1。
PC机或手机中DNS中设置为：pi1.local
