$OpenBSD: patch-boost_asio_detail_socket_ops_hpp,v 1.2 2013/03/08 01:21:37 brad Exp $
--- boost/asio/detail/socket_ops.hpp.orig	Wed Oct 10 15:25:04 2012
+++ boost/asio/detail/socket_ops.hpp	Wed Oct 10 15:26:49 2012
@@ -15,6 +15,8 @@
 # pragma once
 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
 
+#include <netdb.h>
+#include <unistd.h>
 #include <boost/asio/detail/config.hpp>
 
 #include <boost/system/error_code.hpp>
