Index: /trunk/src/VBox/Main/xpcom/server.cpp
===================================================================
--- /trunk/src/VBox/Main/xpcom/server.cpp	(revision 17309)
+++ /trunk/src/VBox/Main/xpcom/server.cpp	(revision 17310)
@@ -195,4 +195,7 @@
 NS_IMPL_THREADSAFE_ISUPPORTS1_CI(HostNetworkInterface, IHostNetworkInterface)
 
+NS_DECL_CLASSINFO(HostNetworkInterfaceIpConfig)
+NS_IMPL_THREADSAFE_ISUPPORTS1_CI(HostNetworkInterfaceIpConfig, IHostNetworkInterfaceIpConfig)
+
 NS_DECL_CLASSINFO(GuestOSType)
 NS_IMPL_THREADSAFE_ISUPPORTS1_CI(GuestOSType, IGuestOSType)