code: func IsBuiltinLocalDriver(networkType string) bool {
  	if "l2bridge" == networkType || "l2tunnel" == networkType || "nat" == networkType || "ics" == networkType || "transparent" == networkType {
  		return true
  	}
  
  	return false
  }
docs: // IsBuiltinLocalDriver validates if network-type is a builtin local-scoped driver