more verbose logging

controller.go

@@ -69,6 +69,7 @@ func startGrpcServer() error {
 	if err != nil {
 		return err
 	}
+	log.Infof("listening to %v", lis.Addr())
 	c.grpcServer = grpc.NewServer()
 	c.nbi = nbi.NewNBI(c.pndc)
 	pb.RegisterCoreServer(c.grpcServer, c.nbi.Core)