diff --git a/ethernet_service.h b/ethernet_service.h
index e132f50..7f75da6 100644
--- a/ethernet_service.h
+++ b/ethernet_service.h
@@ -28,6 +28,7 @@
   // Inherited from Service.
   virtual void Connect(Error *error);
   virtual void Disconnect();
+  virtual bool TechnologyIs(const Technology::Identifier type) const;
 
   // ethernet_<MAC>
   virtual std::string GetStorageIdentifier();