diff --git a/lib/vagrant/action/builtin.rb b/lib/vagrant/action/builtin.rb
index 91a43e4e9..6cfd620b7 100644
--- a/lib/vagrant/action/builtin.rb
+++ b/lib/vagrant/action/builtin.rb
@@ -14,7 +14,6 @@ module Vagrant
       # environment.
       register(:start, Builder.new do
         use VM::CleanMachineFolder
-        use VM::Customize
         use VM::ClearForwardedPorts
         use VM::ForwardPorts
         use VM::Provision
@@ -23,6 +22,7 @@ module Vagrant
         use VM::ShareFolders
         use VM::HostName
         use VM::Network
+        use VM::Customize
         use VM::Boot
       end)
 
diff --git a/lib/vagrant/action/vm/forward_ports.rb b/lib/vagrant/action/vm/forward_ports.rb
index fed25083e..9f297028d 100644
--- a/lib/vagrant/action/vm/forward_ports.rb
+++ b/lib/vagrant/action/vm/forward_ports.rb
@@ -103,16 +103,15 @@ module Vagrant
             # Assuming the only reason to establish port forwarding is because the VM is using Virtualbox NAT networking.
             # Host-only or Bridged networking don't require port-forwarding and establishing forwarded ports on these
             # attachment types has uncertain behaviour.
-            if @env["vm"].vm.network_adapters[adapter].attachment_type == :nat
-              @env.ui.info(I18n.t("vagrant.actions.vm.forward_ports.forwarding_entry", message_attributes))
-              forward_port(name, options)
-            else
-              @env.ui.info(I18n.t("vagrant.actions.vm.forward_ports.non_nat", message_attributes))
+            @env["config"].vm.customize do |vm|
+              if @env["vm"].vm.network_adapters[adapter].attachment_type == :nat
+                @env.ui.info(I18n.t("vagrant.actions.vm.forward_ports.forwarding_entry", message_attributes))
+                forward_port(vm, name, options)
+              else
+                @env.ui.info(I18n.t("vagrant.actions.vm.forward_ports.non_nat", message_attributes))
+              end
             end
           end
-
-          @env["vm"].vm.save
-          @env["vm"].reload!
         end
 
         #--------------------------------------------------------------
@@ -120,13 +119,13 @@ module Vagrant
         #--------------------------------------------------------------
 
         # Forwards a port.
-        def forward_port(name, options)
+        def forward_port(vm, name, options)
           port = VirtualBox::NATForwardedPort.new
           port.name = name
           port.guestport = options[:guestport]
           port.hostport = options[:hostport]
           port.protocol = options[:protocol] || :tcp
-          @env["vm"].vm.network_adapters[options[:adapter]].nat_driver.forwarded_ports << port
+          vm.network_adapters[options[:adapter]].nat_driver.forwarded_ports << port
         end
       end
     end