From d9acc8e5a7e0e907fcc11c0f81ef8bee4787b6a1 Mon Sep 17 00:00:00 2001
From: German-Service-Network <30377384+gsnw@users.noreply.github.com>
Date: Fri, 31 Aug 2018 20:32:30 +0200
Subject: [PATCH] Fix FreeBSD ipv6 build

Source: https://svnweb.freebsd.org/ports/head/net/fping/files/patch-configure.ac?revision=473606&view=markup
Fix build fping with ipv6 support on FreeBSD
---
 configure.ac | 1 +
 1 file changed, 1 insertion(+)

diff --git a/configure.ac b/configure.ac
index 8a0585ac..d2b1ecc1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -18,6 +18,7 @@ AS_IF([test "x$enable_ipv6" != "xno"], [
     dnl Test if IPv6 is supported
        AC_CHECK_HEADERS([netinet/icmp6.h], [have_ipv6="yes"], [], [[
       #include <netinet/in.h>
+      #include <sys/types.h>
   ]])
 ])
 dnl Can't disable both IPv4 and IPv6