Routing in 2 seconds
Route the network for everybody when you are the only one to have the wireless connection.
# aptitude install ipmasq dnsmasq
/etc/network/interfaces
eth1 here is for the interface of the dhcp server. Wireless is on an other interface.
auto eth1
iface eth1 inet static
address 192.168.0.1
netmask 255.255.255.0
/etc/dnsmasq
Uncomment the following line in /etc/dnsmasq
# Uncomment this to enable the integrated DHCP server, you need # to supply the range of addresses available for lease and optionally # a lease time. If you have more than one network, you will need to # repeat this for each network on which you want to supply DHCP # service. #dhcp-range=192.168.0.50,192.168.0.150,12h
(watch that the network address (192.168.0.) is the same as the eth1 one)
and restart dnsmasq
# invoke-rc.d dnsmasq restart
and that's it.
Later
Never forget that you have ipmasq installed. If you encounter
sendmsg: Operation not permitted
then
# invoke-rc.d networking restart
Do not forget either that you have a dhcp server running when you connect randomly to other networks.