diff --git a/src/etc/inc/interfaces.inc b/src/etc/inc/interfaces.inc
index 5dde019fe..918a64633 100644
--- a/src/etc/inc/interfaces.inc
+++ b/src/etc/inc/interfaces.inc
@@ -2442,8 +2442,10 @@ function interface_configure($verbose = false, $interface = 'wan', $reload = fal
             break;
     }
 
-    /* disable accepting router advertisements unless specifically requested */
-    mwexecf('/sbin/ifconfig %s inet6 -accept_rtadv', array($realif));
+    /* o disable accepting router advertisements unless specifically requested
+       o set interface description */
+    $interface_descr = !empty($wancfg['descr']) ? $wancfg['descr'] : strtoupper($interface);
+    mwexecf('/sbin/ifconfig %s inet6 -accept_rtadv description %s', [$realif, $interface_descr]);
 
     if (isset($wancfg['ipaddrv6'])) {
         switch ($wancfg['ipaddrv6']) {