From 232ccc18c40f0d0302b2e21b0f67885c548f8e63 Mon Sep 17 00:00:00 2001
From: Nick Mathewson <nickm@torproject.org>
Date: Wed, 25 Nov 2015 09:27:52 -0500
Subject: [PATCH] Include netinet/in.h (if detected) in check for net/pfvar.h

Patch from rubiate; fixes bug 17551.
---
 changes/bug17551 | 4 ++++
 configure.ac     | 3 +++
 2 files changed, 7 insertions(+)
 create mode 100644 changes/bug17551

diff --git a/changes/bug17551 b/changes/bug17551
new file mode 100644
index 000000000..27e467979
--- /dev/null
+++ b/changes/bug17551
@@ -0,0 +1,4 @@
+  o Minor bugfixes (compilation):
+    - When checking for net/pfvar.h, include netinet/in.h if possible.
+      This fixes transparent proxy detection on OpenBSD. Fixes bug
+      17551; bugfix on 0.1.2.1-alpha. Patch from "rubiate".
diff --git a/configure.ac b/configure.ac
index 06d03ae5c..3236a812f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -971,6 +971,9 @@ AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
 #endif
 #ifdef HAVE_NET_IF_H
 #include <net/if.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
 #endif])
 
 AC_CHECK_HEADERS(linux/if.h,[],[],