Clear all network adapters during the boot process

lib/vagrant/action.rb

@@ -33,6 +33,7 @@ module Vagrant
       autoload :CheckPortCollisions, 'vagrant/action/vm/check_port_collisions'
       autoload :CleanMachineFolder,  'vagrant/action/vm/clean_machine_folder'
       autoload :ClearForwardedPorts, 'vagrant/action/vm/clear_forwarded_ports'
+      autoload :ClearNetworkInterfaces, 'vagrant/action/vm/clear_network_interfaces'
       autoload :ClearNFSExports,     'vagrant/action/vm/clear_nfs_exports'
       autoload :ClearSharedFolders,  'vagrant/action/vm/clear_shared_folders'
       autoload :Customize,           'vagrant/action/vm/customize'

lib/vagrant/action/builtin.rb

@@ -29,6 +29,7 @@ module Vagrant
           use VM::ClearSharedFolders
           use VM::ShareFolders
           use VM::HostName
+          use VM::ClearNetworkInterfaces
           use VM::BridgedNetwork
           use VM::HostOnlyNetwork
           use VM::Customize

lib/vagrant/action/vm/clear_network_interfaces.rb

@@ -0,0 +1,31 @@
+module Vagrant
+  module Action
+    module VM
+      class ClearNetworkInterfaces
+        def initialize(app, env)
+          @app = app
+        end
+
+        def call(env)
+          # Create the adapters array to make all adapters nothing.
+          # We do adapters 2 to 8 because that is every built-in adapter
+          # excluding the NAT adapter on port 1 which Vagrant always
+          # expects to exist.
+          adapters = []
+          2.upto(8).each do |i|
+            adapters << {
+              :adapter => i,
+              :type    => :none
+            }
+          end
+
+          # "Enable" all the adapters we setup.
+          env[:ui].info I18n.t("vagrant.actions.vm.clear_network_interfaces.deleting")
+          env[:vm].driver.enable_adapters(adapters)
+
+          @app.call(env)
+        end
+      end
+    end
+  end
+end

templates/locales/en.yml

@@ -320,6 +320,8 @@ en:
             VirtualBox Version: %{virtualbox_version}
         clear_forward_ports:
           deleting: Clearing any previously set forwarded ports...
+        clear_network_interfaces:
+          deleting: Clearing any previously set network interfaces...
         clear_shared_folders:
           deleting: Cleaning previously set shared folders...
         customize: