code: func getIptablesHasCheckCommand() (bool, error) {
  	vstring, err := getIptablesVersionString()
  	if err != nil {
  		return false, err
  	}
  
  	v1, v2, v3, err := extractIptablesVersion(vstring)
  	if err != nil {
  		return false, err
  	}
  
  	return iptablesHasCheckCommand(v1, v2, v3), nil
  }
docs: // Checks if iptables has the "-C" flag