code: func (e *Networking) Save() error {
  
  	if e.podNS != nil {
  		if err := e.podNSPathSave(); err != nil {
  			return err
  		}
  	}
  
  	var nis []netinfo.NetInfo
  	for _, n := range e.nets {
  		nis = append(nis, *n.runtime)
  	}
  
  	return netinfo.Save(e.podRoot, nis)
  }
docs: // Save writes out the info about active nets
  // for "rkt list" and friends to display