Fixed IPV6 regex https://git.ispconfig.org/ispconfig/ispconfig3/issues/4002

Pascal Dreissen

2016-07-05 fbfdc438eaf2a70d5fefda74c919edc76e82d0fd

1
ALTER TABLE `client` ADD `default_slave_dnsserver` INT( 11 ) UNSIGNED NOT NULL DEFAULT '1' AFTER `limit_dns_zone`;