| **<aid="dns_over_https.enable_dns_over_https"name="dns_over_https.enable_dns_over_https">dns_over_https.enable_dns_over_https</a>**<br/>[`boolean`](https://rougail.readthedocs.io/en/latest/variable.html#variables-types) `standard``mandatory` | Enable DNS over HTTPS.<br/>**Default**: false |