自制路由器

####################/   interface

auto lo

iface lo inet loopback

auto eth0
allow-hotplug eth0
iface eth0 inet dhcp



auto br0
allow-hotplug br0
iface br0 inet static
    address 192.168.11.2
    netmask 255.255.255.0
    gateway 192.168.11.2
    bridge_ports eth1 eth2 eth3
    post-up iptables -t nat -A POSTROUTING -s 192.168.11.0/24 ! -d 192.168.11.0/24 -j MASQUERADE
    bridge_hello 2
    bridge_maxage 12
    bridge_fd 0

    bridge_stp off

####################   dnsmasq.conf

interface=br0
dhcp-range=192.168.11.3,192.168.11.253,255.255.255.0,12h
dhcp-option=3,192.168.11.2
dhcp-option=6,192.168.11.2
addn-hosts=/etc/dnsmasq.hosts
conf-dir=/etc/dnsmasq.d
server=61.239.2.69
cache-size=200