*The provided API key has an IP address restriction. The originating IP address of the call (INSTANCE_IPV6) violates this restriction.* on private instance no-key service#306

```php <?php include_once 'common.php'; $message = 'The provided API key has an IP address restriction. The originating IP address of the call (2603:c027:c002:b800:dfc1:efbf:49e:f15a) violates this restriction.'; //echo preg_quote($message); echo checkRegex('The provided API key has an IP address restriction\. The originating IP address of the call \([0-9a-f:]{38}\) violates this restriction\.', $message) ? 'true' : 'false'; ``` works but not: ```php echo checkRegex('The provided API key has an IP address restriction\. The originating IP address of the call \([0-9a-f:]{,39}\) violates this restriction\.', $message) ? 'true' : 'false'; ``` https://www.php.net/manual/en/regexp.reference.repetition.php [Wikipedia: IPv6#Address representation (1245019371)](https://en.wikipedia.org/w/index.php?title=IPv6&oldid=1245019371#Address_representation) A shortest IPv6 seems to be: `0::0`.