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diff --git a/lib/lwres/unix/include/lwres/net.h b/lib/lwres/unix/include/lwres/net.h
new file mode 100644
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+++ b/lib/lwres/unix/include/lwres/net.h
@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+/* $Id: net.h,v 1.9 2007/06/19 23:47:23 tbox Exp $ */
+
+#ifndef LWRES_NET_H
+#define LWRES_NET_H 1
+
+/*****
+ ***** Module Info
+ *****/
+
+/*! \file net.h
+ * This module is responsible for defining the following basic networking
+ * types:
+ *
+ *\li		struct in_addr
+ *\li		struct in6_addr
+ *\li		struct sockaddr
+ *\li		struct sockaddr_in
+ *\li		struct sockaddr_in6
+ *
+ * It ensures that the AF_ and PF_ macros are defined.
+ *
+ * It declares ntoh[sl]() and hton[sl]().
+ *
+ * It declares lwres_net_aton(), lwres_net_ntop(), and lwres_net_pton().
+ *
+ * It ensures that #INADDR_LOOPBACK, #INADDR_ANY and #IN6ADDR_ANY_INIT
+ * are defined.
+ */
+
+/***
+ *** Imports.
+ ***/
+
+#include <lwres/platform.h>	/* Required for LWRES_PLATFORM_*. */
+
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>		/* Contractual promise. */
+#include <sys/ioctl.h>
+#include <sys/time.h>
+#include <sys/un.h>
+
+#include <netinet/in.h>		/* Contractual promise. */
+#include <arpa/inet.h>		/* Contractual promise. */
+#ifdef LWRES_PLATFORM_NEEDNETINETIN6H
+#include <netinet/in6.h>	/* Required on UnixWare. */
+#endif
+#ifdef LWRES_PLATFORM_NEEDNETINET6IN6H
+#include <netinet6/in6.h>	/* Required on BSD/OS for in6_pktinfo. */
+#endif
+#include <net/if.h>
+
+#include <lwres/lang.h>
+
+#ifndef LWRES_PLATFORM_HAVEIPV6
+#include <lwres/ipv6.h>		/* Contractual promise. */
+#endif
+
+#ifdef LWRES_PLATFORM_HAVEINADDR6
+#define in6_addr in_addr6	/* Required for pre RFC2133 implementations. */
+#endif
+
+/*!
+ * Required for some pre RFC2133 implementations.
+ * IN6ADDR_ANY_INIT and IN6ADDR_LOOPBACK_INIT were added in
+ * draft-ietf-ipngwg-bsd-api-04.txt or draft-ietf-ipngwg-bsd-api-05.txt.
+ * If 's6_addr' is defined then assume that there is a union and three
+ * levels otherwise assume two levels required.
+ */
+#ifndef IN6ADDR_ANY_INIT
+#ifdef s6_addr
+#define IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }
+#else
+#define IN6ADDR_ANY_INIT { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } }
+#endif
+#endif
+
+/*!
+ * Initialize address loopback.  See IN6ADDR_ANY_INIT
+ */
+#ifndef IN6ADDR_LOOPBACK_INIT
+#ifdef s6_addr
+#define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } }
+#else
+#define IN6ADDR_LOOPBACK_INIT { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } }
+#endif
+#endif
+
+/*% Used by AI_ALL */
+#ifndef AF_INET6
+#define AF_INET6 99
+#endif
+
+
+/*% Used to return IPV6 address types. */
+#ifndef PF_INET6
+#define PF_INET6 AF_INET6
+#endif
+
+/*% inaddr Loopback */
+#ifndef INADDR_LOOPBACK
+#define INADDR_LOOPBACK 0x7f000001UL
+#endif
+
+LWRES_LANG_BEGINDECLS
+
+const char *
+lwres_net_ntop(int af, const void *src, char *dst, size_t size);
+
+int
+lwres_net_pton(int af, const char *src, void *dst);
+
+int
+lwres_net_aton(const char *cp, struct in_addr *addr);
+
+LWRES_LANG_ENDDECLS
+
+#endif /* LWRES_NET_H */