# File lib/elb/elb_interface.rb, line 133
    def deregister_instances_from_load_balancer(name, instance_ids)
      params                     = {}
      params['LoadBalancerName'] = name

      i                          = 1
      instance_ids.each do |l|
        params["Instances.member.#{i}.InstanceId"] = "#{l}"
        i                                          += 1
      end

      @logger.info("Deregistering Instances #{instance_ids.join(',')} from Load Balancer '#{name}'")

      link = generate_request("DeregisterInstancesFromLoadBalancer", params) # Same response as register I believe
      resp = request_info(link, QElbRegisterInstancesParser.new(:logger => @logger))

    rescue Exception
      on_exception
    end