diff --git a/plugins/kernel_v1/config/vm.rb b/plugins/kernel_v1/config/vm.rb
index a4fb47487..27f6d2449 100644
--- a/plugins/kernel_v1/config/vm.rb
+++ b/plugins/kernel_v1/config/vm.rb
@@ -120,66 +120,17 @@ module VagrantPlugins
         define(DEFAULT_VM_NAME) if defined_vm_keys.empty?
       end
 
-      def validate(env, errors)
-        errors.add(I18n.t("vagrant.config.vm.box_missing")) if !box
-        errors.add(I18n.t("vagrant.config.vm.box_not_found", :name => box)) if box && !box_url && !env.boxes.find(box, :virtualbox)
-        errors.add(I18n.t("vagrant.config.vm.boot_mode_invalid")) if ![:headless, :gui].include?(boot_mode.to_sym)
-        errors.add(I18n.t("vagrant.config.vm.base_mac_invalid")) if env.boxes.find(box, :virtualbox) && !base_mac
+      # Upgrade to a V2 configuration
+      def upgrade(new)
+        new.vm.auto_port_range = self.auto_port_range
+        new.vm.base_mac = self.base_mac
+        new.vm.boot_mode = self.boot_mode
+        new.vm.box = self.box
+        new.vm.box_url = self.box_url
+        new.vm.guest = self.guest
+        new.vm.host_name = self.host_name
 
-        shared_folders.each do |name, options|
-          hostpath = Pathname.new(options[:hostpath]).expand_path(env.root_path)
-
-          if !hostpath.directory? && !options[:create]
-            errors.add(I18n.t("vagrant.config.vm.shared_folder_hostpath_missing",
-                       :name => name,
-                       :path => options[:hostpath]))
-          end
-
-          if options[:nfs] && (options[:owner] || options[:group])
-            # Owner/group don't work with NFS
-            errors.add(I18n.t("vagrant.config.vm.shared_folder_nfs_owner_group",
-                              :name => name))
-          end
-        end
-
-        # Validate some basic networking
-        #
-        # TODO: One day we need to abstract this out, since in the future
-        # providers other than VirtualBox will not be able to satisfy
-        # all types of networks.
-        networks.each do |type, args|
-          if type == :hostonly && args[0] == :dhcp
-            # Valid. There is no real way this can be invalid at the moment.
-          elsif type == :hostonly
-            # Validate the host-only network
-            ip      = args[0]
-            options = args[1] || {}
-
-            if !ip
-              errors.add(I18n.t("vagrant.config.vm.network_ip_required"))
-            else
-              ip_parts = ip.split(".")
-
-              if ip_parts.length != 4
-                errors.add(I18n.t("vagrant.config.vm.network_ip_invalid",
-                                  :ip => ip))
-              elsif ip_parts.last == "1"
-                errors.add(I18n.t("vagrant.config.vm.network_ip_ends_one",
-                                  :ip => ip))
-              end
-            end
-          elsif type == :bridged
-          else
-            # Invalid network type
-            errors.add(I18n.t("vagrant.config.vm.network_invalid",
-                              :type => type.to_s))
-          end
-        end
-
-        # Each provisioner can validate itself
-        provisioners.each do |prov|
-          prov.validate(env, errors)
-        end
+        # XXX: Warning: `vm.name` is useless now
       end
     end
   end
diff --git a/plugins/kernel_v2/config/vm.rb b/plugins/kernel_v2/config/vm.rb
index 77ef5528d..818b09350 100644
--- a/plugins/kernel_v2/config/vm.rb
+++ b/plugins/kernel_v2/config/vm.rb
@@ -11,12 +11,12 @@ module VagrantPlugins
     class VMConfig < Vagrant.plugin("2", :config)
       DEFAULT_VM_NAME = :default
 
-      attr_accessor :name
       attr_accessor :auto_port_range
-      attr_accessor :box
-      attr_accessor :box_url
       attr_accessor :base_mac
       attr_accessor :boot_mode
+      attr_accessor :box
+      attr_accessor :box_url
+      attr_accessor :guest
       attr_accessor :host_name
       attr_reader :forwarded_ports
       attr_reader :shared_folders
@@ -24,7 +24,6 @@ module VagrantPlugins
       attr_reader :providers
       attr_reader :provisioners
       attr_reader :customizations
-      attr_accessor :guest
 
       def initialize
         @forwarded_ports = []
@@ -112,12 +111,7 @@ module VagrantPlugins
 
         # Add the SubVM to the hash of defined VMs
         if !defined_vms[name]
-          # If it hasn't been defined before, then create the sub-VM configuration
-          # and configure it so that it has the proper name.
           defined_vms[name] ||= VagrantConfigSubVM.new
-          defined_vms[name].push_proc do |config|
-            config.vm.name = name
-          end
         end
 
         defined_vms[name].options.merge!(options)