unbound: also pick up link-local IPv6 and remove localhost

The other code does more or less the same, but it seems that
a lot needs to be cleaned up still...

PR: https://forum.opnsense.org/index.php?topic=3311.0

src/etc/inc/system.inc

@@ -1772,7 +1772,7 @@ function system_arp_wrong_if()
     ));
 }
 
-function get_possible_listen_ips($include_ipv6_link_local=false) {
+function get_possible_listen_ips($include_ipv6_link_local = false, $include_loopback = true) {
     $interfaces = get_configured_interface_with_descr();
     $carplist = get_configured_carp_interface_list();
     $listenips = array();
@@ -1796,9 +1796,11 @@ function get_possible_listen_ips($include_ipv6_link_local=false) {
             }
         }
     }
-    $tmp["name"]  = "Localhost";
-    $tmp["value"] = "lo0";
-    $listenips[] = $tmp;
+    if ($include_loopback) {
+        $tmp["name"]  = "Localhost";
+        $tmp["value"] = "lo0";
+        $listenips[] = $tmp;
+    }
     return $listenips;
 }
 

src/etc/inc/unbound.inc

@@ -556,6 +556,11 @@ function unbound_add_host_entries()
                 $unbound_entries .= "local-data: \"{$config['system']['hostname']}.{$config['system']['domain']} AAAA {$laddr6}\"\n";
                 $unbound_entries .= "local-data: \"{$config['system']['hostname']} AAAA {$laddr6}\"\n";
             }
+            $lladdr6 = find_interface_ipv6_ll($if);
+            if (is_ipaddrv6($lladdr6)) {
+                $unbound_entries .= "local-data: \"{$config['system']['hostname']}.{$config['system']['domain']} AAAA {$lladdr6}\"\n";
+                $unbound_entries .= "local-data: \"{$config['system']['hostname']} AAAA {$lladdr6}\"\n";
+            }
         }
     }
 

src/www/services_unbound.php

@@ -172,10 +172,8 @@ include_once("head.inc");
                           <select name="active_interface[]" multiple="multiple" size="3" class="selectpicker" data-live-search="true">
                             <option value="" <?=empty($pconfig['active_interface'][0]) ? 'selected="selected"' : ""; ?>><?=gettext("All");?></option>
 <?php
-                            foreach (get_possible_listen_ips(true) as $laddr):?>
-                            <option value="<?=$laddr['value'];?>" <?=in_array($laddr['value'], $pconfig['active_interface']) ? 'selected="selected"' : "";?>>
-                              <?=htmlspecialchars($laddr['name']);?>
-                            </option>
+                            foreach (get_possible_listen_ips(false, false) as $laddr):?>
+                            <option value="<?=$laddr['value'];?>" <?=in_array($laddr['value'], $pconfig['active_interface']) ? 'selected="selected"' : "";?>><?=htmlspecialchars($laddr['name']);?></option>
 <?php
                             endforeach; ?>
                           </select>