constification

[exim.git] / src / src / routers / dnslookup.h

diff --git a/src/src/routers/dnslookup.h b/src/src/routers/dnslookup.h
index 3979ef23149e4dc1574e5abe001cc5b8d428770e..ce1daf3c0782adc2646097c96ec009337560a50c 100644 (file)
--- a/src/src/routers/dnslookup.h
+++ b/src/src/routers/dnslookup.h
@@ -2,8 +2,9 @@
 *     Exim - an Internet mail transport agent    *
 *************************************************/
 
-/* Copyright (c) University of Cambridge 1995 - 2015 */
+/* Copyright (c) University of Cambridge 1995 - 2018 */
 /* See the file NOTICE for conditions of use and distribution. */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /* Private structure for the private options. */
 
@@ -18,6 +19,8 @@ typedef struct {
   uschar *srv_fail_domains;
   uschar *check_srv;
   uschar *fail_defer_domains;
+  uschar *ipv4_only;
+  uschar *ipv4_prefer;
 } dnslookup_router_options_block;
 
 /* Data for reading the private options. */