echo Moving /etc/dhcp/dhcpd.conf in .back
mv /etc/dhcp/dhcpd.conf /etc/dhcp/dhcpd.conf.back

printf 'default-lease-time 86400;
max-lease-time 8640000;
log-facility local7;

subnet 192.168.7.0 netmask 255.255.255.252 {
	option routers		192.168.7.2;
	option subnet-mask	255.255.255.252;
	range 192.168.7.1	192.168.7.1;
}

subnet 192.168.100.0 netmask 255.255.255.0 {
	option routers		192.168.100.1;
	option subnet-mask	255.255.255.0;
	range 192.168.100.10	192.168.100.20;
}
' > /etc/dhcp/dhcpd.conf
