Ecco il mio...

codice:
option domain-name "home.org";
option domain-name-servers 192.168.1.1;
option subnet-mask 255.255.255.0;
option broadcast-address 192.168.1.255;
option routers 192.168.1.254;

default-lease-time 600;
max-lease-time 7200;

authoritative;

ddns-update-style interim;

zone home.org. {
  primary 127.0.0.1;
}

zone 1.168.192.in-addr.arpa.{
  primary 127.0.0.1;
}

subnet 192.168.1.0 netmask 255.255.255.0 {
  range 192.168.1.4 192.168.1.19;
}