From 1c8fc20c0d8717d19e65beb7c3835e2a02da55b4 Mon Sep 17 00:00:00 2001
From: Amos Jeffries <squid3@treenet.co.nz>
Date: Tue, 10 Sep 2013 19:01:32 -0600
Subject: [PATCH] Windows: fix IPv6 split-stack support

Some builds of MinGW do not define IPV6_V6ONLY socket option.

  This is an iCelero project
---
 compat/os/mswin.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/compat/os/mswin.h b/compat/os/mswin.h
index c23c4d9e3d..d61e3f2b5b 100644
--- a/compat/os/mswin.h
+++ b/compat/os/mswin.h
@@ -51,6 +51,11 @@
 #define NOMINMAX
 #endif
 
+/// some builds of MinGW do not define IPV6_V6ONLY socket option
+#if !defined(IPV6_V6ONLY)
+#define IPV6_V6ONLY 27
+#endif
+
 #if defined _FILE_OFFSET_BITS && _FILE_OFFSET_BITS == 64
 # define __USE_FILE_OFFSET64	1
 #endif
-- 
2.47.2