pull ip address of computer

my code works fine but i need to pull the ip address off the computer as soon as the server is made

 var pass1 = "";//password of the server
 var passinput1 = "";//password u type for server
 var servercount = 0;//number of servermade
 var servername = "";//when making server name
 var serverpass = "";//when making server password
 var servermade : boolean = true; //shows that server was made
 var makeserver : boolean = false;//allows you to make a server
 var serverlist : boolean = false;//shows server list
 var y = 25;//hides servers untel they are made
 var client : GameObject;
 var spot : Transform;
 function Update () 
 {
     if(servermade)
     {
         name1 = servername;
         pass1 = serverpass;
         y += 25;
         servercount += 1;
         servername = "";
         serverpass = "";
         if(servercount > 0)
         servermade = false;
     }
 }
 function OnGUI () 
 {
     if(GUI.Button(Rect(0, 0, 100, 50), "makeserver"))
     {
         makeserver = !makeserver;
     }
     if(makeserver)
     {
         servername = GUI.TextArea(Rect(100, 0, 200, 25), servername);
         serverpass = GUI.TextArea(Rect(100, 25, 200, 25), serverpass);
         if(GUI.Button(Rect(300, 0, 100, 50), "save"))
         {
             Instantiate(client,spot.position,spot.rotation);
             servermade = true;
         } 
     }
     if(GUI.Button(Rect(0, 50, 100, 200), "serverlist"))
     {
         serverlist = !serverlist;
     }
         if(serverlist)
     {
         GUI.Box(Rect(100, 50, 200, 25), "servername");
         GUI.Box(Rect(300, 50, 100, 25), "serverpass");
         GUI.Box(Rect(400, 50, 100, 25), "maxplayers");
     }
 }