Updates to service updating - broadband

app/Rules/IPv6_CIDR.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace App\Rules;
+
+use Illuminate\Contracts\Validation\Rule;
+
+class IPv6_CIDR implements Rule
+{
+	private const MAX=128;
+
+    /**
+     * Determine if the validation rule passes.
+     *
+     * @param  string  $attribute
+     * @param  mixed  $value
+     * @return bool
+     */
+    public function passes($attribute, $value)
+    {
+		if (str_contains($value,':') && str_contains($value,'/')) {
+			list($value,$mask) = explode('/',$value);
+
+			$m = filter_var($mask,\FILTER_VALIDATE_INT,[
+				'options' => [
+					'min_range' => 0,
+					"max_range" => self::MAX,
+				]
+			]);
+
+			return $m && filter_var($value,\FILTER_VALIDATE_IP,\FILTER_FLAG_IPV6);
+		}
+    }
+
+    /**
+     * Get the validation error message.
+     *
+     * @return string
+     */
+    public function message()
+    {
+        return 'The :attribute must be a valid IPv6 CIDR range.';
+    }
+}