Instalamos el paquete necesario
sudo apt-get install dnsmasq
Vamos a personalizar el fichero:
sudo mv /etc/dnsmasq.conf /etc/dnsmasq.conf.orig sudo nano /etc/dnsmasq.conf
Con esto repartirá direcciones IP por la interfaz y ip seleccionada.
Insertamos lo siguiente y modificamos lo que veamos oportuno:
interface=wlan0 # Use interface wlan0 listen-address=150.5.100.1 # Explicitly specify the address to listen on bind-interfaces # Bind to the interface to make sure we aren't sending things elsewhere server=8.8.8.8 # Forward DNS requests to Google DNS domain-needed # Don't forward short names bogus-priv # Never forward addresses in the non-routed address spaces. dhcp-range=150.5.100.50,150.5.100.150,12h # Assign IP addresses between 150.5.100.50 and 150.5.100.150 with a 12 hour lease time