sunny but closing this anyway.... closes, https://github.com/opnsense/core/issues/1020

src/etc/inc/interfaces.lib.inc

@@ -310,8 +310,8 @@ function _legacy_getall_interface_addresses($ifs)
                                     $addrs['subnetbits6'] = intval($stat[$i+1]);
                                 }
                             }
+                            $addrs['compat'][] = $addr . '/' . $addrs['subnetbits6'];
                         }
-                        $addrs['compat'][] = $addr . '/' . $addrs['subnetbits6'];
                         break;
                     case 'ether':
                         $addrs['macaddr'] = $stat[1];

src/www/interfaces_qinq_edit.php

@@ -26,7 +26,6 @@
     ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     POSSIBILITY OF SUCH DAMAGE.
 */
-error_reporting(E_ALL);
 
 require_once("guiconfig.inc");
 require_once("interfaces.inc");