if err != nil {
		return err
	}
	log.Infof("received hello from ztunnel. %v", m.Version)
	log.Debug("sending snapshot to ztunnel")
	if err := z.sendSnapshot(ctx, conn); err != nil {
		return err
	}
	for {
		// listen for updates:
		select {
		case update, ok := <-conn.Updates:
			if !ok {
				log.Debug("update channel closed - returning")