From a294487e37a8aeb47859423ee2fb6aec18cdae13 Mon Sep 17 00:00:00 2001
From: Robbie Shade <robbie.shade@gmail.com>
Date: Thu, 13 Aug 2015 19:03:05 -0400
Subject: [PATCH] Add Apple specific #define for IPV6_RECVPKTINFO

---
 include/grpc/support/port_platform.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/grpc/support/port_platform.h b/include/grpc/support/port_platform.h
index 57fed18cf68..d5745f98784 100644
--- a/include/grpc/support/port_platform.h
+++ b/include/grpc/support/port_platform.h
@@ -173,6 +173,8 @@
 #endif /* _LP64 */
 #elif defined(__APPLE__)
 #include <TargetConditionals.h>
+/* Provides IPV6_RECVPKTINFO */
+#define __APPLE_USE_RFC_3542
 #ifndef _BSD_SOURCE
 #define _BSD_SOURCE
 #endif