pfSense

The following patch allows for the localhost DNS server to be added automatically when the DNS Resolution behavior is set to Use remote DNS Servers, ignore local DNS:

diff --git a/src/etc/inc/system.inc b/src/etc/inc/system.inc
index 37df27053e..2005d30cb9 100644
--- a/src/etc/inc/system.inc
+++ b/src/etc/inc/system.inc
@@ -1270,7 +1270,7 @@ function get_dns_nameservers($add_v6_brackets = false, $hostns=true) {
         (config_path_enabled('unbound') &&
          (config_get_path('unbound/port', '53') == '53') &&
          (in_array("lo0", explode(",", config_get_path('unbound/active_interface', 'lo0'))) ||
-          in_array("all", explode(",", config_get_path('unbound/active_interface', 'all')), true))) &&
+          in_array("all", explode(",", config_get_path('unbound/active_interface', 'all')), true))) ||
         (config_get_path('system/dnslocalhost') != 'remote')) {
         $dns_nameservers[] = "127.0.0.1";
     }

This seems like a better way to handle it given it's what the option describes and what a user would expect.