test: test IPv6

test/unit/plugins/providers/virtualbox/support/shared/virtualbox_driver_version_4_x_examples.rb

@@ -202,6 +202,35 @@ shared_examples "a version 4.x virtualbox driver" do |options|
         ])
       end
     end
+
+    context "with an IPv6 host-only interface" do
+      let(:output) {
+        <<-OUTPUT.gsub(/^ */, '')
+          Name:            vboxnet1
+          GUID:            786f6276-656e-4174-8000-0a0027000001
+          DHCP:            Disabled
+          IPAddress:       192.168.57.1
+          NetworkMask:     255.255.255.0
+          IPV6Address:     fde4:8dba:82e1::
+          IPV6NetworkMaskPrefixLength: 64
+          HardwareAddress: 0a:00:27:00:00:01
+          MediumType:      Ethernet
+          Status:          Up
+          VBoxNetworkName: HostInterfaceNetworking-vboxnet1
+        OUTPUT
+      }
+
+      it "returns a list with one entry describing that interface" do
+        expect(subject.read_host_only_interfaces).to eq([{
+          name:    'vboxnet1',
+          ip:      '192.168.57.1',
+          netmask: '255.255.255.0',
+          ipv6: 'fde4:8dba:82e1::',
+          ipv6_prefix: '64',
+          status:  'Up',
+        }])
+      end
+    end
   end
 
   describe "remove_dhcp_server" do