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diff --git a/apps/include/netutils/resolv.h b/apps/include/netutils/resolv.h
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+++ b/apps/include/netutils/resolv.h
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+/****************************************************************************
+ * apps/include/netutils/resolv.h
+ * DNS resolver code header file.
+ * Author Adam Dunkels <adam@dunkels.com>
+ *
+ *   Copyright (C) 2007-2009, 2011-2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Inspired by/based on uIP logic by Adam Dunkels:
+ *
+ *   Copyright (c) 2002-2003, Adam Dunkels.
+ *   All rights reserved.
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+#ifndef __APPS_INCLUDE_NETUTILS_RESOLVE_H
+#define __APPS_INCLUDE_NETUTILS_RESOLVE_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/net/uip/uipopt.h>
+
+#include <netinet/in.h>
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+/* Functions. */
+
+EXTERN int resolv_init(void);
+
+#ifdef CONFIG_NET_IPv6
+EXTERN void resolv_conf(FAR const struct in6_addr *dnsserver);
+EXTERN void resolv_getserver(FAR const struct in_addr *dnsserver);
+EXTERN int  resolv_query(FAR const char *name, FAR struct sockaddr_in6 *addr);
+#else
+EXTERN void resolv_conf(FAR const struct in_addr *dnsserver);
+EXTERN void resolv_getserver(FAR struct in_addr *dnsserver);
+EXTERN int  resolv_query(FAR const char *name, FAR struct sockaddr_in *addr);
+#endif
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __APPS_INCLUDE_NETUTILS_RESOLVE_H */