From 4f5116649453539a307cc6be7c0b274d70014e5a Mon Sep 17 00:00:00 2001
From: Andrei Litvin <andy314@gmail.com>
Date: Wed, 8 Dec 2021 16:13:48 -0500
Subject: [PATCH] Update src/inet/UDPEndPointImplSockets.cpp

Co-authored-by: Tennessee Carmel-Veilleux <tennessee.carmelveilleux@gmail.com>
---
 src/inet/UDPEndPointImplSockets.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/inet/UDPEndPointImplSockets.cpp b/src/inet/UDPEndPointImplSockets.cpp
index 284db8fba26edb..6cb255a6d9f0fa 100644
--- a/src/inet/UDPEndPointImplSockets.cpp
+++ b/src/inet/UDPEndPointImplSockets.cpp
@@ -21,6 +21,8 @@
  * This file implements Inet::UDPEndPoint using sockets.
  */
 
+// Required to properly support underlying RFC3542-related fields to IPV6_PKTINFO 
+// on Darwin.
 #define __APPLE_USE_RFC_3542
 #include <inet/UDPEndPointImplSockets.h>