diff --git a/config/default.rb b/config/default.rb
index 2254050aa..f3d0bdf4d 100644
--- a/config/default.rb
+++ b/config/default.rb
@@ -2,6 +2,7 @@ Vagrant::Config.run do |config|
   # default config goes here
   config.vagrant.dotfile_name = ".vagrant"
   config.vagrant.host = :detect
+  config.vagrant.ssh_session_cache = false
 
   config.ssh.username = "vagrant"
   config.ssh.host = "127.0.0.1"
diff --git a/lib/vagrant/config/vagrant.rb b/lib/vagrant/config/vagrant.rb
index 545ec4859..ca9315b47 100644
--- a/lib/vagrant/config/vagrant.rb
+++ b/lib/vagrant/config/vagrant.rb
@@ -5,6 +5,7 @@ module Vagrant
 
       attr_accessor :dotfile_name
       attr_accessor :host
+      attr_accessor :ssh_session_cache
 
       def validate(errors)
         [:dotfile_name, :host].each do |field|
diff --git a/lib/vagrant/ssh.rb b/lib/vagrant/ssh.rb
index 02232a5b2..3b811a7fd 100644
--- a/lib/vagrant/ssh.rb
+++ b/lib/vagrant/ssh.rb
@@ -73,8 +73,12 @@ module Vagrant
       opts[:port] ||= port
 
       # Check if we have a currently open SSH session which has the
-      # same options, and use that if possible
-      session, options = @current_session
+      # same options, and use that if possible.
+      #
+      # NOTE: This is experimental and unstable. Therefore it is disabled
+      # by default.
+      session, options = nil
+      session, options = @current_session if env.config.vagrant.ssh_session_cache
 
       if session && options == opts
         # Verify that the SSH session is still valid
diff --git a/test/vagrant/action/vm/network_test.rb b/test/vagrant/action/vm/network_test.rb
index d33d7cf58..6745de52e 100644
--- a/test/vagrant/action/vm/network_test.rb
+++ b/test/vagrant/action/vm/network_test.rb
@@ -131,7 +131,7 @@ class NetworkVMActionTest < Test::Unit::TestCase
 
         adapter.expects(:enabled=).with(true)
         adapter.expects(:attachment_type=).with(:host_only).once
-        adapter.expects(:host_interface=).with(@network_name).once
+        adapter.expects(:host_only_interface=).with(@network_name).once
 
         if options[:mac]
           adapter.expects(:mac_address=).with(options[:mac].gsub(':', '')).once
diff --git a/test/vagrant/environment_test.rb b/test/vagrant/environment_test.rb
index a309b52a7..329fd6f14 100644
--- a/test/vagrant/environment_test.rb
+++ b/test/vagrant/environment_test.rb
@@ -11,11 +11,11 @@ class EnvironmentTest < Test::Unit::TestCase
 
   context "class method check virtualbox version" do
     setup do
-      VirtualBox.stubs(:version).returns("4.0.0")
+      VirtualBox.stubs(:version).returns("4.1.0")
     end
 
     should "not error and exit if everything is good" do
-      VirtualBox.expects(:version).returns("4.0.0")
+      VirtualBox.expects(:version).returns("4.1.0")
       assert_nothing_raised { @klass.check_virtualbox! }
     end
 
diff --git a/test/vagrant/ssh_test.rb b/test/vagrant/ssh_test.rb
index a23c2a853..61e02178f 100644
--- a/test/vagrant/ssh_test.rb
+++ b/test/vagrant/ssh_test.rb
@@ -12,7 +12,7 @@ class SshTest < Test::Unit::TestCase
   end
 
   setup do
-    VirtualBox.stubs(:version).returns("4.0.0")
+    VirtualBox.stubs(:version).returns("4.1.0")
   end
 
   context "connecting to external SSH" do