Comment 8 for bug 1569237

Steps to reproduce this issue:

$ vagrant init ubuntu/xenial64
$ vagrant up

Console output:

Bringing machine 'default' up with 'virtualbox' provider...
==> default: Importing base box 'ubuntu/xenial64'...
==> default: Matching MAC address for NAT networking...
==> default: Checking if box 'ubuntu/xenial64' is up to date...
==> default: Setting the name of the VM: ubuntu-xenial-16.04-cloudimg
==> default: Clearing any previously set network interfaces...
==> default: Preparing network interfaces based on configuration...
    default: Adapter 1: nat
==> default: Forwarding ports...
    default: 22 (guest) => 2222 (host) (adapter 1)
==> default: Running 'pre-boot' VM customizations...
==> default: Booting VM...
==> default: Waiting for machine to boot. This may take a few minutes...
    default: SSH address: 127.0.0.1:2222
    default: SSH username: ubuntu
    default: SSH auth method: password
    default: Warning: Remote connection disconnect. Retrying...
^C==> default: Waiting for cleanup before exiting...
    default: Warning: Connection refused. Retrying...
    default: Warning: Remote connection disconnect. Retrying...
Vagrant exited after cleanup due to external interrupt.