nl_tokens: Pings and individual server to update the arp table .
pl_tokens: function pingServer ( address ) { return new Promise ( function ( resolve ) { var socket = new net . Socket ( ) socket . setTimeout ( 1000 , close ) socket . connect ( 80 , address , <mask> ) socket . once ( 'error' , close ) function close ( ) { socket . destroy ( ) resolve ( address ) } } ) }