--- loncom/homework/lonhomework.pm	2016/07/18 19:29:11	1.363
+++ loncom/homework/lonhomework.pm	2016/08/31 19:08:18	1.364
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # The LON-CAPA Homework handler
 #
-# $Id: lonhomework.pm,v 1.363 2016/07/18 19:29:11 raeburn Exp $
+# $Id: lonhomework.pm,v 1.364 2016/08/31 19:08:18 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -231,7 +231,7 @@ sub check_slot_access {
     my ($returned_slot,$slot_name,$checkinslot,$ipused,$blockip,$now,$ip,
         $consumed_uniq);
     $now = time;
-    $ip=$env{'request.host'} || $ENV{'REMOTE_ADDR'};
+    $ip=$ENV{'REMOTE_ADDR'} || $env{'request.host'};
 
     if ($checkedin) {
         $checkinslot = $Apache::lonhomework::history{"$checkin.slot"};