Dynamische Update !!!

option domain-name "eulenspiegel.lan";
option domain-name-servers 192.168.100.1;
option subnet-mask 255.255.255.0;
option broadcast-address 192.168.100.255;
option netbios-name-servers fantasia.eulenspiegel.lan;
option routers router.eulenspiegel.lan;
one-lease-per-client true;
ddns-domainname "eulenspiegel.lan";
deny client-updates;
update-static-leases true;
option subnet-mask 255.255.255.0;
default-lease-time 600;
max-lease-time 7200;
ddns-update-style interim;

Include "/etc/ddns.key";

zone eulenspiegel.lan. {
     primary 192.168.100.1;
     key DDNSKEY;
}

zone 100.168.192.in-addr.arpa. {
     primary 192.168.100.1;
     key DDNSKEY;
}

subnet 192.168.100.0 netmask 255.255.255.0 {
  range 192.168.100.30 192.168.100.99;
}

ddns-hostname = pick-first-value (option fqdn.hostname, option host-name, concat ("client-", binary-to-ascii (10, 8, "-", leases-address)));

option host-name = config-option server.ddns-hostname;

options {
	directory "/var/cache/bind";

	// If there is a firewall between you and nameservers you want
	// to talk to, you might need to uncomment the query-source
	// directive below.  Previous versions of BIND always asked
	// questions using port 53, but BIND 8.1 and later use an unprivileged
	// port by default.

	// query-source address * port 53;

	// If your ISP provided one or more IP addresses for stable 
	// nameservers, you probably want to use them as forwarders.  
	// Uncomment the following block, and insert the addresses replacing 
	// the all-0's placeholder.

	// forwarders {
	// 	0.0.0.0;
	// };

	auth-nxdomain no;    # conform to RFC1035

};

// prime the server with knowledge of the root servers
zone "." {
	type hint;
	file "/etc/bind/db.root";
};

// be authoritative for the localhost forward and reverse zones, and for
// broadcast zones as per RFC 1912

zone "localhost" {
	type master;
	file "/etc/bind/db.local";
};

zone "127.in-addr.arpa" {
	type master;
	file "/etc/bind/db.127";
};

zone "0.in-addr.arpa" {
	type master;
	file "/etc/bind/db.0";
};

zone "255.in-addr.arpa" {
	type master;
	file "/etc/bind/db.255";
};

// add entries for other zones below here

Include "/etc/bind/ddns.key";

zone "100.168.192.in-addr.arpa" {
     notify yes;
     type master;
//     allow-transfer { "eulenspiegel"; };
     allow-update { key "DDNSKEY"; };
     file "/etc/bind/192.168.100";
};

zone "eulenspiegel.lan" {
     notify yes;
     type master;
//     allow-transfer { "eulenspiegel"; };
     allow-update {key "DDNSKEY"; };
     file "/etc/bind/eulenspiegel.lan";
};

key DDNSKEY {
    algorithm hmac-md5;
    secret "lCup/JdajNTWHyxLD7vZL24HMjN9eA0UrARx1kxRbMhHVRu4XbchrsePBNyF2qy9rZk9+PnWlRRUI+s+6vjgqQ==";
}