SMB Mount error: Unable to find suitable address

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### Vagrant version
2.0.3

### Virtual Box Version
5.2.8 r121009

### SMB Version
SMB Version 3

### Host operating system
Windows 10 build 16299

### Guest operating system
ubuntu 16.04

### Vagrantfile
```ruby
config.vm.synced_folder HOST_FOLDER_SF, GUEST_FOLDER_SF, :owner=> 'vagrant', :group=>'www-data', type:'smb', mount_options: ['vers=3.0']
```

### Debug output
https://gist.github.com/anrizal/d59006dd99444ae68e0cf252751c3dff

### Expected behavior
The shared folder supposed to be mounted

### Actual behavior
Sometime I found the following error.

The error output from the last command was:
Unable to find suitable address.

### Note
- command line is run with administrator privilege
- This happens often, but not always. If it happens, the only method (that I know) to fix this is to restart the computer or vagrant destroy the image.
- it is always happen if I have my VPN up
- maybe the issue is related with https://github.com/hashicorp/vagrant/issues/9540 and https://github.com/hashicorp/vagrant/issues/9660

Start with the Vagrantfile SMB synced-folder configuration and the linked debug output, then compare the related issues #9540 and #9660. Done means identifying why address lookup fails, especially with the VPN enabled, and making the shared folder mount reliably without requiring a restart or destroy.

Written by the indexing model from the issue text.