rule.php

<?php
/**
     * Get the validation rules that apply to the request.
     *
     * @return array
     */
    public function rules()
    {
        return [
            static::$poolName => 'required|string',
            static::$poolRangeBegin => 'required|ipv4',
            static::$poolRangeEnd => 'required|ipv4',
            static::$networkAddress => 'required|ipv4',
            static::$networkSubnetMask => 'required|integer|min:8',
            static::$networkDefaultGateway => 'required|ipv4',
            static::$networkDns => 'required|array|min:1',
            static::$networkDns.'.*' => 'distinct|nullable|ipv4',
            static::$dhcpInterface => 'required|string',
            static::$dhcpStatus => 'required'
        ];
    }