diff --git a/Vagrantfile b/Vagrantfile
index 6d98f43d6..8d2461df9 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -4,6 +4,9 @@
 # Ruby, run unit tests, etc.
 
 Vagrant.configure("2") do |config|
+  config.vbguest.auto_update = false
+  config.vbguest.installer_options = { foo: 1, bar: 2 }
+
   config.vagrant.host = "linux"
 
   config.ssh.connect_timeout = 30
@@ -24,6 +27,8 @@ Vagrant.configure("2") do |config|
 
   ["a", "b"].each do |m|
     config.vm.define m do |c|
+      c.vbguest.installer_options[:zort] = 3
+
       c.vagrant.host = "ubuntu"
       c.winrm.host = "computer-#{m}"
       c.vm.hostname = "computer-#{m}"
diff --git a/lib/vagrant/protobufs/proto/vagrant_plugin_sdk/plugin_pb.rb b/lib/vagrant/protobufs/proto/vagrant_plugin_sdk/plugin_pb.rb
index 04bd4ffc1..32191d488 100644
--- a/lib/vagrant/protobufs/proto/vagrant_plugin_sdk/plugin_pb.rb
+++ b/lib/vagrant/protobufs/proto/vagrant_plugin_sdk/plugin_pb.rb
@@ -634,6 +634,10 @@ Google::Protobuf::DescriptorPool.generated_pool.build do
       repeated :plugins, :string, 2
       repeated :sensitive, :string, 3
     end
+    add_message "hashicorp.vagrant.sdk.Vagrantfile.GeneralConfig" do
+      optional :type, :string, 1
+      optional :config, :message, 2, "google.protobuf.Any"
+    end
     add_message "hashicorp.vagrant.sdk.Vagrantfile.MachineConfig" do
       optional :name, :string, 1
       optional :config_vm, :message, 2, "hashicorp.vagrant.sdk.Vagrantfile.ConfigVM"
@@ -641,6 +645,7 @@ Google::Protobuf::DescriptorPool.generated_pool.build do
       optional :config_winrm, :message, 4, "hashicorp.vagrant.sdk.Vagrantfile.ConfigWinRM"
       optional :config_winssh, :message, 5, "hashicorp.vagrant.sdk.Vagrantfile.ConfigWinssh"
       optional :config_vagrant, :message, 6, "hashicorp.vagrant.sdk.Vagrantfile.ConfigVagrant"
+      repeated :plugin_configs, :message, 7, "hashicorp.vagrant.sdk.Vagrantfile.GeneralConfig"
     end
     add_message "hashicorp.vagrant.sdk.Vagrantfile.Provisioner" do
       optional :name, :string, 1
@@ -837,6 +842,7 @@ module Hashicorp
       Vagrantfile::ConfigWinRM = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("hashicorp.vagrant.sdk.Vagrantfile.ConfigWinRM").msgclass
       Vagrantfile::ConfigWinssh = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("hashicorp.vagrant.sdk.Vagrantfile.ConfigWinssh").msgclass
       Vagrantfile::ConfigVagrant = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("hashicorp.vagrant.sdk.Vagrantfile.ConfigVagrant").msgclass
+      Vagrantfile::GeneralConfig = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("hashicorp.vagrant.sdk.Vagrantfile.GeneralConfig").msgclass
       Vagrantfile::MachineConfig = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("hashicorp.vagrant.sdk.Vagrantfile.MachineConfig").msgclass
       Vagrantfile::Provisioner = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("hashicorp.vagrant.sdk.Vagrantfile.Provisioner").msgclass
       Vagrantfile::Provider = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("hashicorp.vagrant.sdk.Vagrantfile.Provider").msgclass
diff --git a/plugins/commands/serve/service/internal_service.rb b/plugins/commands/serve/service/internal_service.rb
index 55c9c7cf9..cf71f13c4 100644
--- a/plugins/commands/serve/service/internal_service.rb
+++ b/plugins/commands/serve/service/internal_service.rb
@@ -17,6 +17,7 @@ module VagrantPlugins
         PROVISION_PROTO_CLS = Hashicorp::Vagrant::Sdk::Vagrantfile::Provisioner
         SYNCED_FOLDER_PROTO_CLS = Hashicorp::Vagrant::Sdk::Vagrantfile::SyncedFolder
         NETWORK_PROTO_CLS = Hashicorp::Vagrant::Sdk::Vagrantfile::Network
+        GENERAL_CONFIG_CLS = Hashicorp::Vagrant::Sdk::Vagrantfile::GeneralConfig
 
         CONFIG_VM_CLS =  Hashicorp::Vagrant::Sdk::Vagrantfile::ConfigVM
         CONFIG_SSH_CLS = Hashicorp::Vagrant::Sdk::Vagrantfile::ConfigSSH
@@ -79,6 +80,14 @@ module VagrantPlugins
             extract_synced_folders(config_vm_proto.synced_folders, vm_config.synced_folders)
             extract_provider(config_vm_proto.providers, vm_config)
 
+            plugin_configs = []
+            root_config.__internal_state["keys"].each do |name, config|
+              # A builtin plugin
+              # TODO: find a better way to check the module
+              next if config.class.to_s.split("::")[0] == "VagrantPlugins"
+              plugin_configs << extract_plugin_config(name, config)
+            end
+
             machine_configs << Hashicorp::Vagrant::Sdk::Vagrantfile::MachineConfig.new(
               name: mach.to_s,
               config_vm: config_vm_proto,
@@ -86,7 +95,7 @@ module VagrantPlugins
               config_ssh: config_ssh_proto,
               config_winrm: config_winrm_proto,
               config_winssh: config_winssh_proto,
-
+              plugin_configs: plugin_configs
             )
           end
 
@@ -288,6 +297,14 @@ module VagrantPlugins
           config_any = Google::Protobuf::Any.pack(config_struct)
           config_cls.new(config: config_any)
         end
+
+        def extract_plugin_config(type, config)
+          protoize = config.instance_variables_hash
+          protoize = clean_up_config_object(protoize)
+          config_struct = Google::Protobuf::Struct.from_hash(protoize)
+          config_any = Google::Protobuf::Any.pack(config_struct)
+          GENERAL_CONFIG_CLS.new(type: type, config: config_any)
+        end
       end
     end
   end