code: func iptablesHasCheckCommand(v1 int, v2 int, v3 int) bool {
  	if v1 > 1 {
  		return true
  	}
  	if v1 == 1 && v2 > 4 {
  		return true
  	}
  	if v1 == 1 && v2 == 4 && v3 >= 11 {
  		return true
  	}
  	return false
  }
docs: // Checks if an iptables version is after 1.4.11, when --check was added