From 48b8c1187647b71412922bd1f2780cb1811badba Mon Sep 17 00:00:00 2001
From: Alex Arslan <ararslan@comcast.net>
Date: Sat, 14 Apr 2018 10:41:01 -0700
Subject: [PATCH] tcp,openbsd: disable Unix TCP check for IPV6_ONLY

OpenBSD does not support setting IPV6_ONLY to anything but 1; OpenBSD
does not support IPv4-mapped IPv6 addresses.

Upstreamed from OpenBSD Ports Collection.

PR-URL: https://github.com/libuv/libuv/pull/1797
Reviewed-By: Aaron Bieber <deftly@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>
---
 src/unix/tcp.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/unix/tcp.c b/src/unix/tcp.c
index 336d8e29..9a46793f 100644
--- a/src/unix/tcp.c
+++ b/src/unix/tcp.c
@@ -164,6 +164,7 @@ int uv__tcp_bind(uv_tcp_t* tcp,
   if (setsockopt(tcp->io_watcher.fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)))
     return UV__ERR(errno);
 
+#ifndef __OpenBSD__
 #ifdef IPV6_V6ONLY
   if (addr->sa_family == AF_INET6) {
     on = (flags & UV_TCP_IPV6ONLY) != 0;
@@ -179,6 +180,7 @@ int uv__tcp_bind(uv_tcp_t* tcp,
       return UV__ERR(errno);
     }
   }
+#endif
 #endif
 
   errno = 0;