diff --git a/ip-poll.js b/ip-poll.js
index cf051b5..7a43bd4 100644
--- a/ip-poll.js
+++ b/ip-poll.js
@@ -3,23 +3,32 @@ var EventEmitter = require('events').EventEmitter;
 var exec = require('child_process').exec;
 
 
-var IpPoll = function(switchaddr, hostsaddr) {
+var IpPoll = function(target) {
     var self = this;
 
-    var regexp = /\(([0-9]+) hosts* up\)/;
-    var nmap = "nmap -n -sP ";
+    var regexp = /([0-9]+)% packet loss/m;
+    var command = "LANG=C ping -c 2";
 
     this.pollState = function() {
-        exec(nmap + switchaddr, function (error, stdout, stderr) {
-            if(error == null) {
+        try {
+            exec(command + " " + target, function (error, stdout, stderr) {
+                // console.log(stdout);
+
                 var matches = regexp.exec(stdout);
-                if(matches != null && matches.length === 2) {
-                    self.emit('doneState', matches[1] === "1");
+                if (matches != null) {
+
+                    // console.log("matches " + JSON.stringify(matches));
+                    // console.log("length: " + matches.length);
+                    // console.log("matches 1: " + matches[1]);
+
+                    if (matches.length === 2) {
+                        self.emit('doneState', matches[1] === "0");
+                    }
                 }
-            } else {
-                self.emit('doneState', "unknown");
-            }
-        });
+            });
+        } catch(err) {
+            self.emit('doneState', "unknown");
+        }
     };
 
 };