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diff --git a/libevent-2.0.20-stable/ipv6-internal.h b/libevent-2.0.20-stable/ipv6-internal.h
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+++ b/libevent-2.0.20-stable/ipv6-internal.h
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2009-2012 Niels Provos and Nick Mathewson
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Internal use only: Fake IPv6 structures and values on platforms that
+ * do not have them */
+
+#ifndef _EVENT_IPV6_INTERNAL_H
+#define _EVENT_IPV6_INTERNAL_H
+
+#include <sys/types.h>
+#ifdef _EVENT_HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#include "event2/event-config.h"
+#include "event2/util.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** @file ipv6-internal.h
+ *
+ * Replacement types and functions for platforms that don't support ipv6
+ * properly.
+ */
+
+#ifndef _EVENT_HAVE_STRUCT_IN6_ADDR
+struct in6_addr {
+	ev_uint8_t s6_addr[16];
+};
+#endif
+
+#ifndef _EVENT_HAVE_SA_FAMILY_T
+typedef int sa_family_t;
+#endif
+
+#ifndef _EVENT_HAVE_STRUCT_SOCKADDR_IN6
+struct sockaddr_in6 {
+	/* This will fail if we find a struct sockaddr that doesn't have
+	 * sa_family as the first element. */
+	sa_family_t sin6_family;
+	ev_uint16_t sin6_port;
+	struct in6_addr sin6_addr;
+};
+#endif
+
+#ifndef AF_INET6
+#define AF_INET6 3333
+#endif
+#ifndef PF_INET6
+#define PF_INET6 AF_INET6
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif