(openvpn, csc) add tunnel_networkv6 for https://github.com/opnsense/core/issues/1161

src/etc/inc/openvpn.inc

@@ -940,6 +940,15 @@ function openvpn_resync_csc_conf($settings, $server)
             $conf .= "ifconfig-push {$clientip} " . gen_subnet_mask($mask) . "\n";
         }
     }
+    if (!empty($settings['tunnel_networkv6'])) {
+        list($ipv6, $prefix) = explode('/', $settings['tunnel_networkv6']);
+        list($ipv6_1, $ipv6_2) = openvpn_get_interface_ipv6($ipv6, $prefix);
+        if ($server['dev_mode'] == 'tun' && empty($server['topology_subnet'])) {
+            $conf .= "ifconfig-ipv6-push {$ipv6_2} {$ipv6_1}\n";
+        } else {
+            $conf .= "ifconfig-ipv6-push {$ipv6_2} {$prefix}\n";
+        }
+    }
 
     if (!empty($settings['local_network'])) {
         $conf .= openvpn_gen_routes($settings['local_network'], "ipv4", true);

src/www/vpn_openvpn_csc.php

@@ -35,7 +35,7 @@ require_once("plugins.inc");
 
 // define all fields used in this form
 $all_form_fields = "custom_options,disable,common_name,block,description
-    ,tunnel_network,local_network,local_networkv6,remote_network
+    ,tunnel_network,tunnel_networkv6,local_network,local_networkv6,remote_network
     ,remote_networkv6,gwredir,push_reset,dns_domain,dns_server1
     ,dns_server2,dns_server3,dns_server4,ntp_server1,ntp_server2
     ,netbios_enable,netbios_ntype,netbios_scope,wins_server1
@@ -131,6 +131,9 @@ if ($_SERVER['REQUEST_METHOD'] === 'GET') {
         if ($result = openvpn_validate_cidr($pconfig['tunnel_network'], 'IPv4 Tunnel Network')) {
             $input_errors[] = $result;
         }
+        if ($result = openvpn_validate_cidr($pconfig['tunnel_networkv6'], 'IPv6 Tunnel Network', false, "ipv6")) {
+            $input_errors[] = $result;
+        }
         if ($result = openvpn_validate_cidr($pconfig['local_network'], 'IPv4 Local Network', true, "ipv4")) {
             $input_errors[] = $result;
         }
@@ -466,6 +469,21 @@ if ($act!="new" && $act!="edit") {
                       </div>
                     </td>
                   </tr>
+                  <tr>
+                    <td><a id="help_for_tunnel_networkv6" href="#" class="showhelp"><i class="fa fa-info-circle"></i></a> <?=gettext("IPv6 Tunnel Network"); ?></td>
+                    <td>
+                      <input name="tunnel_networkv6" type="text" value="<?=$pconfig['tunnel_networkv6'];?>" />
+                      <div class="hidden" for="help_for_tunnel_networkv6">
+                          <?=gettext("This is the IPv6 virtual network used for private " .
+                                                "communications between this server and client " .
+                                                "hosts expressed using CIDR (eg. fe80::/64). " .
+                                                "The first network address will be assigned to " .
+                                                "the server virtual interface. The remaining " .
+                                                "network addresses can optionally be assigned " .
+                                                "to connecting clients. (see Address Pool)"); ?>
+                      </div>
+                    </td>
+                  </tr>
                   <tr id="local_optsv4">
                     <td><a id="help_for_local_network" href="#" class="showhelp"><i class="fa fa-info-circle"></i></a> <?=gettext("IPv4 Local Network"); ?></td>
                     <td>