yii\validators\IpValidator::validateAttribute PHP Method

    public function validateAttribute($model, $attribute)
    {
        $value = $model->{$attribute};
        $result = $this->validateSubnet($value);
        if (is_array($result)) {
            $result[1] = array_merge(['ip' => is_array($value) ? 'array()' : $value], $result[1]);
            $this->addError($model, $attribute, $result[0], $result[1]);
        } else {
            $model->{$attribute} = $result;
        }
    }