Configuración para un servidor DHCP con reservas de IPs /etc/dnsmasq.conf

 
interface=wlan0
dhcp-option=3,192.168.155.1
dhcp-option=6,8.8.8.8,8.8.4.4
dhcp-range=192.168.155.50,192.168.155.100,12h

#Reservas
#Camara 1
dhcp-host=28:10:7b:1e:5c:42,192.168.155.92

#Camara 360
dhcp-host=78:a5:dd:05:9f:ec,192.168.155.94

dhcp-mac=set:client_is_a_pi,B8:27:EB:*:*:*
dhcp-reply-delay=tag:client_is_a_pi,2

Referencias