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diff --git a/palacios/src/lwip/include/lwip/dns.h b/palacios/src/lwip/include/lwip/dns.h
deleted file mode 100644
index 6196742..0000000
--- a/palacios/src/lwip/include/lwip/dns.h
+++ /dev/null
@@ -1,92 +0,0 @@
-/**
- * lwip DNS resolver header file.
-
- * Author: Jim Pettinato 
- *   April 2007
-
- * ported from uIP resolv.c Copyright (c) 2002-2003, Adam Dunkels.
- *
- * 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 __LWIP_DNS_H__
-#define __LWIP_DNS_H__
-
-#include "lwip/opt.h"
-
-#if LWIP_DNS /* don't build if not configured for use in lwipopts.h */
-
-/** DNS timer period */
-#define DNS_TMR_INTERVAL          1000
-
-/** DNS field TYPE used for "Resource Records" */
-#define DNS_RRTYPE_A              1     /* a host address */
-#define DNS_RRTYPE_NS             2     /* an authoritative name server */
-#define DNS_RRTYPE_MD             3     /* a mail destination (Obsolete - use MX) */
-#define DNS_RRTYPE_MF             4     /* a mail forwarder (Obsolete - use MX) */
-#define DNS_RRTYPE_CNAME          5     /* the canonical name for an alias */
-#define DNS_RRTYPE_SOA            6     /* marks the start of a zone of authority */
-#define DNS_RRTYPE_MB             7     /* a mailbox domain name (EXPERIMENTAL) */
-#define DNS_RRTYPE_MG             8     /* a mail group member (EXPERIMENTAL) */
-#define DNS_RRTYPE_MR             9     /* a mail rename domain name (EXPERIMENTAL) */
-#define DNS_RRTYPE_NULL           10    /* a null RR (EXPERIMENTAL) */
-#define DNS_RRTYPE_WKS            11    /* a well known service description */
-#define DNS_RRTYPE_PTR            12    /* a domain name pointer */
-#define DNS_RRTYPE_HINFO          13    /* host information */
-#define DNS_RRTYPE_MINFO          14    /* mailbox or mail list information */
-#define DNS_RRTYPE_MX             15    /* mail exchange */
-#define DNS_RRTYPE_TXT            16    /* text strings */
-
-/** DNS field CLASS used for "Resource Records" */
-#define DNS_RRCLASS_IN            1     /* the Internet */
-#define DNS_RRCLASS_CS            2     /* the CSNET class (Obsolete - used only for examples in some obsolete RFCs) */
-#define DNS_RRCLASS_CH            3     /* the CHAOS class */
-#define DNS_RRCLASS_HS            4     /* Hesiod [Dyer 87] */
-#define DNS_RRCLASS_FLUSH         0x800 /* Flush bit */
-
-/** Callback which is invoked when a hostname is found.
- * A function of this type must be implemented by the application using the DNS resolver.
- * @param name pointer to the name that was looked up.
- * @param ipaddr pointer to a struct ip_addr containing the IP address of the hostname,
- *        or NULL if the name could not be found (or on any other error).
- * @param callback_arg a user-specified callback argument passed to dns_gethostbyname
-*/
-typedef void (*dns_found_callback)(const char *name, struct ip_addr *ipaddr, void *callback_arg);
-
-
-void           dns_init(void);
-
-void           dns_tmr(void);
-
-void           dns_setserver(u8_t numdns, struct ip_addr *dnsserver);
-
-struct ip_addr dns_getserver(u8_t numdns);
-
-err_t          dns_gethostbyname(const char *hostname, struct ip_addr *addr,
-                                 dns_found_callback found, void *callback_arg);
-
-#endif /* LWIP_DNS */
-
-#endif /* __LWIP_DNS_H__ */