diff --git a/src/etc/inc/interfaces.inc b/src/etc/inc/interfaces.inc
index 58100f117..007ec0871 100644
--- a/src/etc/inc/interfaces.inc
+++ b/src/etc/inc/interfaces.inc
@@ -3786,6 +3786,7 @@ function link_interface_to_track6($wanif, $update = false)
         }
 
         foreach ($list as $lanif => $lancfg) {
+            interface_dhcpv6_prepare($wanif, $wancfg);
             interface_track6_configure($lanif, $lancfg);
         }
     }