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diff --git a/gl/arpa_inet.in.h b/gl/arpa_inet.in.h
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+/* A GNU-like <arpa/inet.h>.
+
+   Copyright (C) 2005-2006, 2008 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+#ifndef _GL_ARPA_INET_H
+
+/* Gnulib's sys/socket.h is responsible for pulling in winsock2.h etc
+   under MinGW. */
+#include <sys/socket.h>
+
+#if @HAVE_ARPA_INET_H@
+
+# if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+# endif
+
+/* The include_next requires a split double-inclusion guard.  */
+# @INCLUDE_NEXT@ @NEXT_ARPA_INET_H@
+
+#endif
+
+#ifndef _GL_ARPA_INET_H
+#define _GL_ARPA_INET_H
+
+/* The definition of GL_LINK_WARNING is copied here.  */
+
+#if @GNULIB_INET_NTOP@
+# if !@HAVE_DECL_INET_NTOP@
+/* Converts an internet address from internal format to a printable,
+   presentable format.
+   AF is an internet address family, such as AF_INET or AF_INET6.
+   SRC points to a 'struct in_addr' (for AF_INET) or 'struct in6_addr'
+   (for AF_INET6).
+   DST points to a buffer having room for CNT bytes.
+   The printable representation of the address (in numeric form, not
+   surrounded by [...], no reverse DNS is done) is placed in DST, and
+   DST is returned.  If an error occurs, the return value is NULL and
+   errno is set.  If CNT bytes are not sufficient to hold the result,
+   the return value is NULL and errno is set to ENOSPC.  A good value
+   for CNT is 46.
+
+   For more details, see the POSIX:2001 specification
+   <http://www.opengroup.org/susv3xsh/inet_ntop.html>.  */
+extern const char *inet_ntop (int af, const void *restrict src,
+			      char *restrict dst, socklen_t cnt);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef inet_ntop
+# define inet_ntop(af,src,dst,cnt) \
+    (GL_LINK_WARNING ("inet_ntop is unportable - " \
+                      "use gnulib module inet_ntop for portability"), \
+     inet_ntop (af, src, dst, cnt))
+#endif
+
+#if @GNULIB_INET_PTON@
+# if !@HAVE_DECL_INET_PTON@
+extern int inet_pton (int af, const char *restrict src, void *restrict dst);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef inet_pton
+# define inet_pton(af,src,dst) \
+  (GL_LINK_WARNING ("inet_pton is unportable - " \
+		    "use gnulib module inet_pton for portability"), \
+   inet_pton (af, src, dst))
+#endif
+
+#endif /* _GL_ARPA_INET_H */
+#endif /* _GL_ARPA_INET_H */