concern about usage with vagrant-proxyconf and kitchen-vagrant.

vagrantfile.erb

Vagrant.configure("2") do |c|
  c.vm.box = "<%= config[:box] %>"
  c.vm.box_url = "<%= config[:box_url] %>"

  if Vagrant.has_plugin?("vagrant-proxyconf")
    c.proxy.http  = "<%= config[:http_proxy] %>"
    c.proxy.https = "<%= config[:http_proxy] %>"
    c.proxy.no_proxy = "<%= config[:no_proxy] %>"
  end

<% if config[:vm_hostname] %>
  c.vm.hostname = "<%= config[:vm_hostname] %>"
<% end %>
<% if config[:guest] %>
  c.vm.guest = <%= config[:guest] %>
<% end %>
<% if config[:username] %>
  c.ssh.username = "<%= config[:username] %>"
<% end %>
<% if config[:ssh_key] %>
  c.ssh.private_key_path = "<%= config[:ssh_key] %>"
<% end %>

<% Array(config[:network]).each do |opts| %>
  c.vm.network(:<%= opts[0] %>, <%= opts[1..-1].join(", ") %>)
<% end %>

  c.vm.synced_folder ".", "/vagrant", disabled: true
<% config[:synced_folders].each do |source, destination, options| %>
  c.vm.synced_folder "<%= source %>", "<%= destination %>", <%= options %>
<% end %>

  c.vm.provider :<%= config[:provider] %> do |p|
<% config[:customize].each do |key, value| %>
  <% case config[:provider]
     when "virtualbox" %>
    p.customize ["modifyvm", :id, "--<%= key %>", "<%= value %>"]
  <% when "rackspace", "softlayer" %>
    p.<%= key %> = "<%= value%>"
  <% when /^vmware_/ %>
    <% if key == :memory %>
      <% unless config[:customize].include?(:memsize) %>
    p.vmx["memsize"] = "<%= value %>"
      <% end %>
    <% else %>
    p.vmx["<%= key %>"] = "<%= value %>"
    <% end %>
  <% end %>
<% end %>
  end
end