=== modified file 'sbin/pidns_run'
--- old/sbin/pidns_run	2021-12-16 15:38:57 +0000
+++ new/sbin/pidns_run	2021-12-16 15:38:23 +0000
@@ -54,7 +54,7 @@
             raise SystemExit(127)
         else:
             # parent
-            rlist, wlist, elist = (parent_rfd,), (), ()
+            rlist, wlist, elist = (parent_rfd), (), ()
             while True:
                 (pid, status) = os.waitpid(0, os.WNOHANG)
                 if pid == fork2_pid: