diff --git a/example/static-server.js b/example/static-server.js
new file mode 100644
index 0000000..2fe8ffc
--- /dev/null
+++ b/example/static-server.js
@@ -0,0 +1,109 @@
+/*
+	This example will only offer IP-Addresses to clients
+	with a specific MAC
+  
+  HINT: Untested
+*/
+
+const dhcpd = require('../lib/server.js');
+
+const config = {
+	// IP of the machine this script is running on
+	"serverip": "192.168.0.5",
+	// Subnetmask
+	"subnet": "255.255.255.0",
+	// Broadcast-Address
+	"broadcast": "192.168.0.255",
+	// A list of DNS servers
+	"nameservers": [
+		"8.8.8.8",
+		"8.8.4.4"
+	],
+	// Gateway
+	"gateway": "192.168.0.1",
+	// Routers
+	"routers": [
+		
+	],
+	// A list of clients and the IP-Addresses they should get
+	"clients": {
+		"00:00:00:00:00:00": {
+			"ip": "192.168.0.100",
+			"xid": -1
+		}
+	},
+	"leastime": 3600
+};
+
+var server = new DHCPServer('udp4', {boradcast: config.broadcast});
+
+/*
+	A client sends a DISCOVERY-packet.
+	We will only answer to known clients.
+*/
+server.on('discover', function(packet, ip) {
+	// Inspect this packet
+	console.log(JSON.stringify(packet));
+	
+	// Check if he is known to us
+	if(typeof config.clients[packet.chaddr] == "undefined") return;
+	
+	server.offer(packet, {
+		// His current IP
+		ciaddr: ip ? ip : '0.0.0.0',
+		// The IP we want to offer him
+		yiaddr: config.clients[packet.chaddr].ip,
+		// IP of this server
+		siaddr: config.serverip,
+		// IP of the gateway
+		giaddr: config.gateway,
+		// List of routers
+		routers: config.routers.join(","),
+		options: {
+			// Subnetmask
+			1:	config.subnet,
+			// Routers
+			3:	config.routers,
+			// DNS-servers
+			6:	config.nameservers,
+			// Broadcast-address
+			28:	self.config.broadcast,
+			// Lease-Time
+			51:	config.leasetime
+		}
+	});
+	
+	config.clients[packet.chaddr].xid = packet.xid;
+});
+
+server.on('request', function(packet, ip) {
+	// Inspect this packet
+	console.log(JSON.stringify(packet));
+	
+	// Check if he is known to us
+	if(typeof config.clients[packet.chaddr] == "undefined") return;
+	
+	// Because his IP will be static, we will always answer with the same packet - only if we ACK or NAK changes
+	var response = {
+		ciaddr: ip ? ip : '0.0.0.0',
+		yiaddr: config.clients[packet.chaddr].ip,
+		siaddr: config.serverip,
+		giaddr: config.gateway,
+		routers: config.routers.join(","),
+		options: {
+			1:	config.subnet,
+			3:	config.routers,
+			6:	config.nameservers,
+			28:	self.config.broadcast,
+			51:	config.leasetime
+		}
+	};
+	
+	// Check if he answers to the last send package
+	if(packet.xid != config.clients[packet.chaddr].xid)
+		// It wasn't - NAK his request
+		return server.nak(packet, response);
+	
+	// "Allow" him to use this IP
+	return server.ack(packet, response);
+});
diff --git a/lib/packet.js b/lib/packet.js
index 581a04f..6f98a6a 100644
--- a/lib/packet.js
+++ b/lib/packet.js
@@ -55,7 +55,7 @@ var fromBuffer = function(b) {
 
 var toBuffer = function() {
   var buffer, hex, i, key, octet, opt, padded, pos, value, _i, _j, _k, _l, _len, _len1, _len2, _len3, _ref, _ref1, _ref2, _ref3;
-  buffer = new Buffer(512, 'ascii');
+  buffer = Buffer.alloc(512, 0x00, 'ascii');
   buffer[0] = this.op;
   buffer[1] = this.htype;
   buffer.writeUInt8(this.hlen, 2);
@@ -96,7 +96,7 @@ var toBuffer = function() {
     }
   }
   buffer[pos] = 255;
-  padded = new Buffer(pos, 'ascii');
+  padded = Buffer.alloc(pos, 0x00, 'ascii');
   buffer.copy(padded, 0, 0, pos);
   return padded;
 };
diff --git a/package.json b/package.json
index adc7ce2..087c07f 100644
--- a/package.json
+++ b/package.json
@@ -4,15 +4,13 @@
   "version": "0.0.1",
   "author": "glaszig <glaszig@gmail.com>",
   "contributors": [
-    { "name": "Scott McWhirter", "email": "scott@cloudtone.ca", "url": "http://github.com/cloudtone" }
+    { "name": "Scott McWhirter", "email": "scott@cloudtone.ca", "url": "http://github.com/cloudtone" },
+    { "name": "Tino Ruge", "email": "admin@tionsys.de", "url": "https://tionsys.de/" }
   ],
   "keywords": ["dhcp"],
   "main": "./lib/server",
-  "engines": { "node": ">= 0.8.0" },
+  "engines": { "node": ">= 5.1" },
   "dependencies": {
     "sprintf": ">= 0.1.1"
-  },
-  "devDependencies": {
-    "sqlite3": "= 2.1.5"
   }
 }