Index: config/iris/node/FreeBSD/8.0-RELEASE/wleiden.pl
===================================================================
--- config/iris/node/FreeBSD/8.0-RELEASE/wleiden.pl	(revision 8957)
+++ config/iris/node/FreeBSD/8.0-RELEASE/wleiden.pl	(revision 8959)
@@ -272,4 +272,5 @@
 
   @whitelist = ();
+  @dhcp_interfaces = ();
   $WLAN_NR = 0;
   foreach my $interface (sort keys %config) {
@@ -303,4 +304,7 @@
             push(@whitelist, $CAPTIVE_PORTAL_WHITELIST{$if});
           }
+          if ( $DHCP{$if} ) {
+            push(@dhcp_interfaces, $IFNAME);
+          }
           $output .= "\"\n";
         }
@@ -318,4 +322,5 @@
   };
   $output .= "\ncaptive_portal_whitelist=\"" .join(' ',@whitelist) . "\"\n";
+  $output .= "captive_portal_interfaces=\"" .join(' ',@dhcp_interfaces) . "\"\n";
   return($output);
 };