我有一台装有 Ubuntu 12.04、Virtualbox 4.3 和 Vagrant 1.5.1 的服务器。我正在尝试使用这个框http://puppet-vagrant-boxes.puppetlabs.com/centos-64-x64-vbox4210.box但是没有成功。当我运行“vagrant up”时，我收到以下消息：
Bringing machine 'default' up with 'virtualbox' provider...
==> default: Importing base box 'centos-64-x64-vbox4210'...
==> default: Matching MAC address for NAT networking...
==> default: Setting the name of the VM: rafael_default_1396403974194_51967
==> default: Clearing any previously set forwarded ports...
==> default: Clearing any previously set network interfaces...
==> default: Preparing network interfaces based on configuration...
default: Adapter 1: nat
==> default: Forwarding ports...
default: 22 => 2222 (adapter 1)
==> …