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diff --git a/geekos/include/lwip/ipv6/lwip/icmp.h b/geekos/include/lwip/ipv6/lwip/icmp.h
new file mode 100644
index 0000000..87e9ffd
--- /dev/null
+++ b/geekos/include/lwip/ipv6/lwip/icmp.h
@@ -0,0 +1,100 @@
+/*
+ * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
+ * 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.
+ *
+ * This file is part of the lwIP TCP/IP stack.
+ * 
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ */
+#ifndef __LWIP_ICMP_H__
+#define __LWIP_ICMP_H__
+
+#include "lwip/opt.h"
+
+#if LWIP_ICMP /* don't build if not configured for use in lwipopts.h */
+
+#include "lwip/pbuf.h"
+#include "lwip/netif.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define ICMP6_DUR  1
+#define ICMP6_TE   3
+#define ICMP6_ECHO 128    /* echo */
+#define ICMP6_ER   129      /* echo reply */
+
+
+enum icmp_dur_type {
+  ICMP_DUR_NET = 0,    /* net unreachable */
+  ICMP_DUR_HOST = 1,   /* host unreachable */
+  ICMP_DUR_PROTO = 2,  /* protocol unreachable */
+  ICMP_DUR_PORT = 3,   /* port unreachable */
+  ICMP_DUR_FRAG = 4,   /* fragmentation needed and DF set */
+  ICMP_DUR_SR = 5      /* source route failed */
+};
+
+enum icmp_te_type {
+  ICMP_TE_TTL = 0,     /* time to live exceeded in transit */
+  ICMP_TE_FRAG = 1     /* fragment reassembly time exceeded */
+};
+
+void icmp_input(struct pbuf *p, struct netif *inp);
+
+void icmp_dest_unreach(struct pbuf *p, enum icmp_dur_type t);
+void icmp_time_exceeded(struct pbuf *p, enum icmp_te_type t);
+
+struct icmp_echo_hdr {
+  u8_t type;
+  u8_t icode;
+  u16_t chksum;
+  u16_t id;
+  u16_t seqno;
+};
+
+struct icmp_dur_hdr {
+  u8_t type;
+  u8_t icode;
+  u16_t chksum;
+  u32_t unused;
+};
+
+struct icmp_te_hdr {
+  u8_t type;
+  u8_t icode;
+  u16_t chksum;
+  u32_t unused;
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LWIP_ICMP */
+
+#endif /* __LWIP_ICMP_H__ */
+