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diff --git a/examples/pcap2nbench/ip.hpp b/examples/pcap2nbench/ip.hpp
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+++ b/examples/pcap2nbench/ip.hpp
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+/*\
+ *  pcap2nbench - Converts libpcap network traces to nbench input
+ *  Copyright (C) 2004  Jim McDonough <jmcd@us.ibm.com>
+ *
+ *  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 of the License, 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, see <http://www.gnu.org/licenses/>.
+ *
+ *  Written by Anthony Liguori <aliguori@us.ibm.com>
+\*/
+
+#ifndef IP_HPP
+#define IP_HPP
+
+#include <stdint.h>
+#include <iostream>
+
+struct ip {
+  ip(const uint8_t *data, size_t length);
+
+  uint8_t version;
+  uint8_t header_length;
+  uint8_t dsfield;
+  uint16_t total_length;
+  uint16_t id;
+  uint8_t flags;
+  uint16_t fragment_offset;
+  uint8_t ttl;
+  uint8_t protocol;
+  uint16_t checksum;
+  uint32_t source;
+  uint32_t destination;
+};
+
+std::ostream &operator<<(std::ostream &lhs, const ip &rhs);
+
+#endif