--- /dev/null
+#!/usr/bin/perl -0p
+s/^(\s*negative-time-to-live\s*passwd\s*).*$/\13/m or die;
+s/^(\s*negative-time-to-live\s*group\s*).*$/\13/m or die;
+s/^(\s*persistent\s*passwd\s*).*$/\1no/m or die;
+s/^(\s*persistent\s*group\s*).*$/\1no/m or die;
+