-

diff --git a/lib/lighthouse.js b/lib/lighthouse.js
index f9a00c8..2a292e9 100644
--- a/lib/lighthouse.js
+++ b/lib/lighthouse.js
@@ -2,11 +2,13 @@ var Netmask = require('netmask').Netmask
 var dgram = require('dgram');
 var os = require('os');
 
+var PORT = 3001;
+var MULTICAST_ADDR = "224.1.1.1";
+var BROADCAST_ADDR = "0.0.0.0";
+
 var lighthouse = function Lighthouse() {
   this.timer = null;
   this.interval = 1;
-  this.port = 3001;
-  this.multicast_address = "224.1.1.1";
   this.server = dgram.createSocket({type: "udp4", reuseAddr: true});
 }
 
@@ -31,7 +33,10 @@ lighthouse.prototype.listen = function() {
     console.log(`server close:\n${err.stack}`);
   });
 
-  self.server.bind(self.port);
+  self.server.bind(PORT, BROADCAST_ADDR, function() {
+    self.server.addMembership(MULTICAST_ADDR);
+    self.server.setBroadcast(true);
+  });
 }
 
 lighthouse.prototype.startBroadcasting = function() {
@@ -60,9 +65,8 @@ lighthouse.prototype.startBroadcasting = function() {
     self.message = new Buffer("{server: '" + self.address + "'}");
 
     block = new Netmask(self.address + '/' + self.mask);
-    self.braodcast_address = block.broadcast;
 
-    console.log(`Broadcasting to: ${self.braodcast_address}:${self.port}`);
+    console.log(`Broadcasting to: ${block.broadcast}:${PORT}`);
     console.log(String(self.message));
   }
 
@@ -78,7 +82,7 @@ lighthouse.prototype.rebroadcast = function() {
   var self = this;
 
   if (self.message) {
-    self.server.send(self.message, 0, self.message.length, self.port, self.broadcast_address, function() {
+    self.server.send(self.message, 0, self.message.length, PORT, MULTICAST_ADDR, function() {
       console.log(`Sent message: ${self.message}`);
     });
   }