Vagrant hängt bei "SSH-auth-Methode: Private key

Ich bin mit VirtualBox 5.0.24 und Vagrant 1.8.5 auf Digitale Ozean VPS läuft auf Ubuntu 14.04 LTS Precise
Ich bin mit der box ubuntu/precise64
Alles funktioniert einwandfrei, aber wenn ich vagrant up es hängt an der

SSH auth method: Private key

und die Ausfahrt aus was die Zeit aus. Jetzt kann ich mir überlegen, die Erhöhung der Ausführungszeit, aber es nimmt schon einen tarif Menge an Zeit, bevor er diesen Fehler. Ich weiß nicht, was ich falsch mache.
Hier ist mein VAGRANTFILE

# -*- mode: ruby -*-
# vi: set ft=ruby :

# All Vagrant configuration is done below. The "2" in Vagrant.configure
# configures the configuration version (we support older styles for
# backwards compatibility). Please don't change it unless you know what
# you're doing.
Vagrant.configure("2") do |config|
# The most common configuration options are documented and commented below.
# For a complete reference, please see the online documentation at
# https://docs.vagrantup.com.

# Every Vagrant development environment requires a box. You can search for
# boxes at https://atlas.hashicorp.com/search.
  config.vm.box = "ubuntu/precise64"

# Disable automatic box update checking. If you disable this, then
# boxes will only be checked for updates when the user runs
# `vagrant box outdated`. This is not recommended.
# config.vm.box_check_update = false

# Create a forwarded port mapping which allows access to a specific port
# within the machine from a port on the host machine. In the example below,
# accessing "localhost:8080" will access port 80 on the guest machine.
# config.vm.network "forwarded_port", guest: 80, host: 8080

# Create a private network, which allows host-only access to the machine
# using a specific IP.
# config.vm.network "private_network", ip: "192.168.33.10"

# Create a public network, which generally matched to bridged network.
# Bridged networks make the machine appear as another physical device on
# your network.
# config.vm.network "public_network"

# Share an additional folder to the guest VM. The first argument is
# the path on the host to the actual folder. The second argument is
# the path on the guest to mount the folder. And the optional third
# argument is a set of non-required options.
# config.vm.synced_folder "../data", "/vagrant_data"

# Provider-specific configuration so you can fine-tune various
# backing providers for Vagrant. These expose provider-specific options.
# Example for VirtualBox:
#
# config.vm.provider "virtualbox" do |vb|
#   # Display the VirtualBox GUI when booting the machine
#   vb.gui = true
#
#   # Customize the amount of memory on the VM:
#   vb.memory = "1024"
# end
#
# View the documentation for the provider you are using for more
# information on available options.

# Define a Vagrant Push strategy for pushing to Atlas. Other push strategies
# such as FTP and Heroku are also available. See the documentation at
# https://docs.vagrantup.com/v2/push/atlas.html for more information.
# config.push.define "atlas" do |push|
#   push.app = "YOUR_ATLAS_USERNAME/YOUR_APPLICATION_NAME"
# end

# Enable provisioning with a shell script. Additional provisioners such as
# Puppet, Chef, Ansible, Salt, and Docker are also available. Please see the
# documentation for more information about their specific syntax and use.
# config.vm.provision "shell", inline: <<-SHELL
#   apt-get update
#   apt-get install -y apache2
# SHELL
  config.vm.provider :virtualbox do |vb|
    vb.customize ['modifyvm', :'1cf9e703-607e-4338-9162-20abbeca94b0', '--pae', 'on']
    vb.customize ['modifyvm', :'1cf9e703-607e-4338-9162-20abbeca94b0', '--hwvirtex', 'off']
    vb.customize ['modifyvm', :'1cf9e703-607e-4338-9162-20abbeca94b0', '--vtxvpid', 'off']
end

end