Hello, My local IP address is 10.8.8.41. I could not figure out why when I use 127.0.0.1 the code works but fails when I use my IP address. The error is "druby://10.8.8.41:6438 - #<Errno::EBADF: Bad file descriptor - connect(2)" require 'rubygems' require 'reliable-msg' manager = ReliableMsg::QueueManager.new manager.start queue = ReliableMsg::Queue.new 'my-queue', :drb_uri => 'druby:// 127.0.0.1:6438' #queue = ReliableMsg::Queue.new 'my-queue', :drb_uri => 'druby:// 10.8.8.41:6438' queue.put "This is a test object" msg = queue.get p msg manager.stop Thanks