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diff --git a/libnetutil/PacketParser.h b/libnetutil/PacketParser.h
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+/***************************************************************************
+ * PacketParser.h -- The PacketParser Class offers methods to parse        *
+ * received network packets. Its main purpose is to facilitate the         *
+ * conversion of raw sequences of bytes into chains of objects of the      *
+ * PacketElement family.                                                   *
+ *                                                                         *
+ ***********************IMPORTANT NMAP LICENSE TERMS************************
+ *
+ * The Nmap Security Scanner is (C) 1996-2023 Nmap Software LLC ("The Nmap
+ * Project"). Nmap is also a registered trademark of the Nmap Project.
+ *
+ * This program is distributed under the terms of the Nmap Public Source
+ * License (NPSL). The exact license text applying to a particular Nmap
+ * release or source code control revision is contained in the LICENSE
+ * file distributed with that version of Nmap or source code control
+ * revision. More Nmap copyright/legal information is available from
+ * https://nmap.org/book/man-legal.html, and further information on the
+ * NPSL license itself can be found at https://nmap.org/npsl/ . This
+ * header summarizes some key points from the Nmap license, but is no
+ * substitute for the actual license text.
+ *
+ * Nmap is generally free for end users to download and use themselves,
+ * including commercial use. It is available from https://nmap.org.
+ *
+ * The Nmap license generally prohibits companies from using and
+ * redistributing Nmap in commercial products, but we sell a special Nmap
+ * OEM Edition with a more permissive license and special features for
+ * this purpose. See https://nmap.org/oem/
+ *
+ * If you have received a written Nmap license agreement or contract
+ * stating terms other than these (such as an Nmap OEM license), you may
+ * choose to use and redistribute Nmap under those terms instead.
+ *
+ * The official Nmap Windows builds include the Npcap software
+ * (https://npcap.com) for packet capture and transmission. It is under
+ * separate license terms which forbid redistribution without special
+ * permission. So the official Nmap Windows builds may not be redistributed
+ * without special permission (such as an Nmap OEM license).
+ *
+ * Source is provided to this software because we believe users have a
+ * right to know exactly what a program is going to do before they run it.
+ * This also allows you to audit the software for security holes.
+ *
+ * Source code also allows you to port Nmap to new platforms, fix bugs, and add
+ * new features. You are highly encouraged to submit your changes as a Github PR
+ * or by email to the dev@nmap.org mailing list for possible incorporation into
+ * the main distribution. Unless you specify otherwise, it is understood that
+ * you are offering us very broad rights to use your submissions as described in
+ * the Nmap Public Source License Contributor Agreement. This is important
+ * because we fund the project by selling licenses with various terms, and also
+ * because the inability to relicense code has caused devastating problems for
+ * other Free Software projects (such as KDE and NASM).
+ *
+ * The free version of Nmap 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. Warranties,
+ * indemnification and commercial support are all available through the
+ * Npcap OEM program--see https://nmap.org/oem/
+ *
+ ***************************************************************************/
+/* This code was originally part of the Nping tool.                        */
+
+#ifndef __PACKETPARSER_H__
+#define __PACKETPARSER_H__ 1
+
+#include "ApplicationLayerElement.h"
+#include "ARPHeader.h"
+#include "DataLinkLayerElement.h"
+#include "EthernetHeader.h"
+#include "ICMPHeader.h"
+#include "ICMPv4Header.h"
+#include "ICMPv6Header.h"
+#include "ICMPv6Option.h"
+#include "ICMPv6RRBody.h"
+#include "IPv4Header.h"
+#include "IPv6Header.h"
+#include "NetworkLayerElement.h"
+#include "PacketElement.h"
+#include "RawData.h"
+#include "TCPHeader.h"
+#include "TransportLayerElement.h"
+#include "UDPHeader.h"
+#include "HopByHopHeader.h"
+#include "DestOptsHeader.h"
+#include "FragmentHeader.h"
+#include "RoutingHeader.h"
+
+
+#define LINK_LAYER         2
+#define NETWORK_LAYER      3
+#define TRANSPORT_LAYER    4
+#define APPLICATION_LAYER  5
+#define EXTHEADERS_LAYER   6
+
+typedef struct header_type_string{
+    u32 type;
+    const char *str;
+}header_type_string_t;
+
+
+typedef struct packet_type{
+    u32 type;
+    u32 length;
+}pkt_type_t;
+
+
+class PacketParser {
+
+    private:
+
+    public:
+
+    /* Misc */
+    PacketParser();
+    ~PacketParser();
+    void reset();
+
+    static const char *header_type2string(int val);
+    static pkt_type_t *parse_packet(const u8 *pkt, size_t pktlen, bool eth_included);
+    static int dummy_print_packet_type(const u8 *pkt, size_t pktlen, bool eth_included); /* TODO: remove */
+    static int dummy_print_packet(const u8 *pkt, size_t pktlen, bool eth_included); /* TODO: remove */
+    static int payload_offset(const u8 *pkt, size_t pktlen, bool link_included);
+    static PacketElement *split(const u8 *pkt, size_t pktlen, bool eth_included);
+    static PacketElement *split(const u8 *pkt, size_t pktlen);
+    static int freePacketChain(PacketElement *first);
+    static const char *test_packet_parser(PacketElement *test_pkt);
+    static bool is_response(PacketElement *sent, PacketElement *rcvd);
+    static PacketElement *find_transport_layer(PacketElement *chain);
+
+}; /* End of class PacketParser */
+
+#endif /* __PACKETPARSER_H__ */