From b48a92c8f50f7536c8b48113fe56e23ce2c80bae Mon Sep 17 00:00:00 2001
From: Willem Toorop <willem@nlnetlabs.nl>
Date: Wed, 22 Mar 2017 12:33:13 +0100
Subject: [PATCH] Max OS-X and FreeBSD multicast portability

---
 src/mdns.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/mdns.c b/src/mdns.c
index 8a63f013..fbb875ac 100644
--- a/src/mdns.c
+++ b/src/mdns.c
@@ -48,6 +48,11 @@ typedef u_short sa_family_t;
 #define TRUE 1
 #endif
 
+/* Define IPV6_ADD_MEMBERSHIP for FreeBSD and Mac OS X */
+#ifndef IPV6_ADD_MEMBERSHIP
+#define IPV6_ADD_MEMBERSHIP IPV6_JOIN_GROUP
+#endif
+
 uint64_t _getdns_get_time_as_uintt64();
 
 #include "util/fptr_wlist.h"