diff --git a/plugins/synced_folders/rsync/command/rsync_auto.rb b/plugins/synced_folders/rsync/command/rsync_auto.rb
index 407b7f368..8b84f8ed3 100644
--- a/plugins/synced_folders/rsync/command/rsync_auto.rb
+++ b/plugins/synced_folders/rsync/command/rsync_auto.rb
@@ -48,6 +48,9 @@ module VagrantPlugins
           paths = {}
           ignores = []
           with_target_vms(argv) do |machine|
+            next if machine.state.id == :not_created
+            cwd = machine.env.cwd.to_s
+
             if machine.provider.capability?(:proxy_machine)
               proxy = machine.provider.capability(:proxy_machine)
               if proxy
@@ -70,6 +73,21 @@ module VagrantPlugins
             folders = cached[:rsync]
             next if !folders || folders.empty?
 
+            # NOTE: This check is required with boot2docker since all containers
+            # share the same virtual machine. This prevents rsync-auto from
+            # syncing all known containers with rsync to the boot2docker vm
+            # and only syncs the current working dirs folders.
+            sync_folders = {}
+            folders.each do |id, folder_opts|
+              if cwd != folder_opts[:hostpath]
+                machine.ui.info(I18n.t("vagrant.rsync_auto_remove_folder",
+                                    folder: folder_opts[:hostpath]))
+              else
+                sync_folders[id] = folder_opts
+              end
+            end
+            folders = sync_folders
+
             # Get the SSH info for this machine so we can do an initial
             # sync to the VM.
             ssh_info = machine.ssh_info
diff --git a/templates/locales/en.yml b/templates/locales/en.yml
index 26d756564..deae43256 100644
--- a/templates/locales/en.yml
+++ b/templates/locales/en.yml
@@ -218,6 +218,8 @@ en:
       have specified `rsync_auto` to be false.
     rsync_auto_path: |-
       Watching: %{path}
+    rsync_auto_remove_folder: |-
+      Not syncing %{folder} as it is not part of the current working directory.
     rsync_auto_rsync_error: |-
       There was an error while executing rsync. The error is shown below.
       This may not be critical since rsync sometimes fails, but if this message
diff --git a/test/unit/plugins/synced_folders/rsync/command/rsync_auto_test.rb b/test/unit/plugins/synced_folders/rsync/command/rsync_auto_test.rb
index b1e1a7451..a6aafaa4b 100644
--- a/test/unit/plugins/synced_folders/rsync/command/rsync_auto_test.rb
+++ b/test/unit/plugins/synced_folders/rsync/command/rsync_auto_test.rb
@@ -13,31 +13,77 @@ describe VagrantPlugins::SyncedFolderRSync::Command::RsyncAuto do
     env.create_vagrant_env
   end
 
-  let(:synced_folders) { {} }
+  let(:synced_folders_empty) { {} }
+  let(:synced_folders_dupe) { {"1234":
+                               {type: "rsync",
+                                exclude: false,
+                                hostpath: "/Users/brian/code/vagrant-sandbox"},
+                               "5678":
+                               {type: "rsync",
+                                exclude: false,
+                                hostpath: "/Not/The/Same/Path"}} }
 
   let(:helper_class) { VagrantPlugins::SyncedFolderRSync::RsyncHelper }
 
+  let(:paths) { {} }
+  let(:ssh_info) {{}}
+
+  def machine_stub(name)
+    double(name).tap do |m|
+      m.stub(id: "foo")
+      m.stub(reload: nil)
+      m.stub(ssh_info: ssh_info)
+      m.stub(ui: iso_env.ui)
+      m.stub(provider: double("provider"))
+      m.stub(state: double("state", id: :not_created))
+      m.stub(env: iso_env)
+
+      m.ui.stub(error: nil)
+    end
+  end
+
+  subject do
+    described_class.new(argv, iso_env).tap
+  end
+
+
+  describe "#execute" do
+    let (:machine) { machine_stub("m") }
+    let (:cached_folders) { { rsync: synced_folders_dupe } }
+
+    before do
+        allow(subject).to receive(:with_target_vms) { |&block| block.call machine }
+    end
+
+    it "does not sync folders outside of the cwd" do
+      allow(machine.ui).to receive(:info)
+      allow(machine.state).to receive(:id).and_return(:created)
+      allow(machine.env).to receive(:cwd).
+        and_return("/Users/brian/code/vagrant-sandbox")
+      allow(machine.provider).to receive(:capability?).and_return(false)
+
+      allow(subject).to receive(:synced_folders).
+        with(machine, cached: true).and_return(cached_folders)
+      allow(helper_class).to receive(:rsync_single).and_return(true)
+      allow(Vagrant::Util::Busy).to receive(:busy).and_return(true)
+      allow(Listen).to receive(:to).and_return(true)
+
+
+      expect(machine.ui).to receive(:info).
+        with("Not syncing /Not/The/Same/Path as it is not part of the current working directory.")
+      expect(helper_class).to receive(:rsync_single)
+
+      subject.execute()
+    end
+  end
+
   subject do
     described_class.new(argv, iso_env).tap do |s|
-      s.stub(synced_folders: synced_folders)
+      s.stub(synced_folders: synced_folders_empty)
     end
   end
 
   describe "#callback" do
-    let(:paths) { {} }
-    let(:ssh_info) {{}}
-
-    def machine_stub(name)
-      double(name).tap do |m|
-        m.stub(id: "foo")
-        m.stub(reload: nil)
-        m.stub(ssh_info: ssh_info)
-        m.stub(ui: double("ui"))
-
-        m.ui.stub(error: nil)
-      end
-    end
-
     it "syncs modified folders to the proper path" do
       paths["/foo"] = [
         { machine: machine_stub("m1"), opts: double("opts_m1") },