Admin can't choose :: wildcard IPv6 in web_vhost_domain_edit.php
There's support for * IPv4 wildcard at https://git.ispconfig.org/ispconfig/ispconfig3/blob/master/interface/web/sites/web_vhost_domain_edit.php#L548 but not for :: IPv6 wildcard at https://git.ispconfig.org/ispconfig/ispconfig3/blob/master/interface/web/sites/web_vhost_domain_edit.php#L563