Instale o firmware do OpenWRT (stable) no seu router.
Siga as instruções da wiki.
Conecte o roteador na internet via porta WAN.
Atualize e instale os pacotes necessários
opkg update
opkg install olsrd olsrd-mod-dyn-gw olsrd-mod-txtinfo nano kmod-ipip luci-app-olsr luci-app-olsr-viz
config wifi-device radio0
option disabled 0
config interface 'mesh'
option proto 'static'
option ipaddr '10.0.0.4'
option netmask '255.0.0.0'
option dns '208.67.222.222 208.67.220.220'
config wifi-iface
option device radio0
option network lan
option mode ap
option ssid wifinopolis
option encryption none
config wifi-iface
option device radio0
option network mesh
option mode adhoc
option ssid wifinopolis.org
option hidden 1
option encryption none
config olsrd
option IpVersion '4'
config LoadPlugin
option library 'olsrd_dyn_gw.so.0.5'
config LoadPlugin
option library 'olsrd_txtinfo.so.0.1'
option accept '0.0.0.0'
config Interface
list interface 'mesh'
config zone
option name 'mesh'
option network 'mesh'
option input 'ACCEPT'
option output 'ACCEPT'
option forward 'ACCEPT'
option masq '1'
config forwarding
option dest 'wan'
option src 'mesh'
config forwarding
option dest 'mesh'
option src 'lan'