in39内网专用DNS服务器搭建(dnsmasq)

内网dns服务器可以参考的一些配置

# Never forward plain names (without a dot or domain part)
# 不包含点(.)的域名不要发给上游DNS服务器(不会流出当前节点)
domain-needed

# Never forward addresses in the non-routed address spaces.
# 无法路由的地址不要发给上游DNS服务器(不会流出当前节点)
bogus-priv

# If you don't want dnsmasq to read /etc/resolv.conf or any other
# file, getting its servers from this file instead (see below), then
# uncomment this.
# 不读取/etc/resolv.conf, 因为里面只有namserver 127.0.0.1
no-resolv

# Add other name servers here, with domain specs if they are for
# non-public domains.
# 对于解析不了的域名, 转发某个上游DNS服务器
server=192.168.50.1

# Add local-only domains here, queries in these domains are answered
# from /etc/hosts or DHCP only.
# 对于.in39结尾的域名都视为内网, 不转发给上游DNS服务器.
local=/in39/

# Add domains which you want to force to an IP address here.
# The example below send any host in double-click.net to a local
# web-server.
# 解析, 泛解析域名到IP, 如下*.helloworld.in39和helloworld.in39都会解析到这个IP
# 域名本身也可以加通配符来做字符串匹配解析.
address=/helloworld.in39/192.168.50.1

# If you don't want dnsmasq to read /etc/hosts, uncomment the
# following line.
# 不要读取/etc/hosts
no-hosts

# or if you want it to read another file, as well as /etc/hosts, use
# this.
# 但是读取以下指定的文件作为hosts内容 格式和hosts保持一致. 多个IP可以解析到同一个域名, dnsmasq可以正确解析.
addn-hosts=...

# Include another lot of configuration options.
# conf-file=/etc/dnsmasq.more.conf
# 可以把配置文件分离到其他文件或文件夹里, 可以有多个
conf-dir=...

参考

dnsmasq - ArchWiki

Wildcard subdomains with dnsmasq

Stop DNSMasq From Forwarding Local Hostnames

Assign multiple IPs to 1 Entry in hosts file

Is there a way to use a specific DNS for a specific domain?

有个简短的视频可以参考 Configuring DNS With Dnsmasq and Ubuntu Server