diff --git a/tests/tst-bsd-netdriver.c b/tests/tst-bsd-netdriver.c
index f3e6322f032483832a447ecab1c7300110202ebb..fe9acc367ef0db7829c8628dc0a4686807e49960 100644
--- a/tests/tst-bsd-netdriver.c
+++ b/tests/tst-bsd-netdriver.c
@@ -112,6 +112,7 @@ int main(void)
 
     /*
      * Let all domains know about this interface...
+     * lo0 will be called twice...
      * (There are non configured at this moment)
      */
     if_attachdomain(NULL);