}
if ($found === false) {
$input_errors[] = sprintf(gettext("The gateway address %1\$s does not lie within one of the chosen interface's subnets."), $_POST['gateway']);
}
}
} else {
if (is_ipaddrv6($_POST['gateway'])) {
/* do not do a subnet match on a link local address, it's valid */
if (!is_linklocal($_POST['gateway'])) {
$parent_ip = get_interface_ipv6($_POST['interface']);
$parent_sn = get_interface_subnetv6($_POST['interface']);
if (empty($parent_ip) || empty($parent_sn)) {
$input_errors[] = gettext("Cannot add IPv6 Gateway Address because no IPv6 address could be found on the interface.");
} elseif (!isset($_POST["nonlocalgateway"])) {
$subnets = array(gen_subnetv6($parent_ip, $parent_sn) . "/" . $parent_sn);
$vips = link_interface_to_vips($_POST['interface']);
if (is_array($vips)) {
foreach ($vips as $vip) {
if (!is_ipaddrv6($vip['subnet'])) {
continue;
}
$subnets[] = gen_subnetv6($vip['subnet'], $vip['subnet_bits']) . "/" . $vip['subnet_bits'];
}
}
$found = false;
foreach ($subnets as $subnet) {
if (ip_in_subnet($_POST['gateway'], $subnet)) {
$found = true;
break;
}
}
}
}
if (!$found) {
$input_errors[] = sprintf(gettext("The gateway address %1\$s does not lie within one of the chosen interface's subnets."), $pconfig['gateway']);
}
}
} elseif (is_ipaddrv6($pconfig['gateway'])) {
/* do not do a subnet match on a link local address, it's valid */
if (!is_linklocal($pconfig['gateway'])) {
$parent_ip = get_interface_ipv6($pconfig['interface']);
$parent_sn = get_interface_subnetv6($pconfig['interface']);
if (empty($parent_ip) || empty($parent_sn)) {
$input_errors[] = gettext("Cannot add IPv6 Gateway Address because no IPv6 address could be found on the interface.");
} else {
$subnets = array(gen_subnetv6($parent_ip, $parent_sn) . "/" . $parent_sn);
$vips = link_interface_to_vips($pconfig['interface']);
if (is_array($vips)) {
foreach ($vips as $vip) {
if (!is_ipaddrv6($vip['subnet'])) {
continue;
}
$subnets[] = gen_subnetv6($vip['subnet'], $vip['subnet_bits']) . "/" . $vip['subnet_bits'];
}
}
$found = false;
foreach ($subnets as $subnet) {
if (ip_in_subnet($pconfig['gateway'], $subnet)) {
$found = true;
break;
}
}
