diff --git a/core/node/libp2p/libp2p.go b/core/node/libp2p/libp2p.go
index ad350501e018..235c76218898 100644
--- a/core/node/libp2p/libp2p.go
+++ b/core/node/libp2p/libp2p.go
@@ -528,12 +528,19 @@ func AutoNATService(mctx helpers.MetricsCtx, lc fx.Lifecycle, cfg *config.Config
 	if !cfg.Swarm.EnableAutoNATService {
 		return nil
 	}
-	var opts []libp2p.Option
+
+	// collect private net option in case swarm.key is presented
+	opts, _, err := P2PPNet(repo)
+	if err != nil {
+		// swarm key exists but was failed to decode
+		return err
+	}
+
 	if cfg.Experimental.QUIC {
-		opts = append(opts, libp2p.DefaultTransports, libp2p.Transport(libp2pquic.NewTransport))
+		opts.Opts = append(opts.Opts, libp2p.DefaultTransports, libp2p.Transport(libp2pquic.NewTransport))
 	}
 
-	_, err := autonat.NewAutoNATService(helpers.LifecycleCtx(mctx, lc), host, opts...)
+	_, err = autonat.NewAutoNATService(helpers.LifecycleCtx(mctx, lc), host, opts.Opts...)
 	return err
 }