/* packet-dhcp.c

 * Routines for DHCP/BOOTP packet disassembly

 *

 * Copyright 1998, Gilbert Ramirez <gram@alumni.rice.edu>

 * Copyright 2004, Thomas Anders <thomas.anders [AT] blue-cable.de>

 *

 * Added option field filters

 * Copyright 2011, Michael Mann

 *

 * Added option  77 : RFC 3004 - The User Class Option for DHCP

 * Added option 117 : RFC 2937 - The Name Service Search Option for DHCP

 * Added option 119 : RFC 3397 - Dynamic Host Configuration Protocol (DHCP) Domain Search Option

 *          RFC 3396 - Encoding Long Options in the Dynamic Host Configuration Protocol (DHCPv4)

 * Improved opt 120 : Add support of RFC 3396 - Encoding Long Options in the Dynamic Host Configuration Protocol (DHCPv4)

 *          Add support compression according to the encoding in Section 4.1.4 of RFC 1035 - DOMAIN NAMES - IMPLEMENTATION AND SPECIFICATION

 *

 *

 * Copyright 2012, Jerome LAFORGE <jerome.laforge [AT] gmail.com>

 *

 * The information used comes from:

 * RFC  951: Bootstrap Protocol

 * RFC 1035: Domain Names - Implementation And Specification

 * RFC 1497: BOOTP extensions

 * RFC 1542: Clarifications and Extensions for the Bootstrap Protocol

 * RFC 2131: Dynamic Host Configuration Protocol

 * RFC 2132: DHCP Options and BOOTP Vendor Extensions

 * RFC 2241: DHCP Options for Novell Directory Services

 * RFC 2242: NetWare/IP Domain Name and Information

 * RFC 2489: Procedure for Defining New DHCP Options

 * RFC 2610: DHCP Options for Service Location Protocol

 * RFC 2685: Virtual Private Networks Identifier

 * RFC 2937: The Name Service Search Option for DHCP

 * RFC 3004: The User Class Option for DHCP

 * RFC 3046: DHCP Relay Agent Information Option

 * RFC 3118: Authentication for DHCP Messages

 * RFC 3203: DHCP reconfigure extension

 * RFC 3315: Dynamic Host Configuration Protocol for IPv6 (DHCPv6)

 * RFC 3396: Encoding Long Options in the Dynamic Host Configuration Protocol (DHCPv4)

 * RFC 3397: Dynamic Host Configuration Protocol (DHCP) Domain Search Option

 * RFC 3495: DHCP Option (122) for CableLabs Client Configuration

 * RFC 3594: PacketCable Security Ticket Control Sub-Option (122.9)

 * RFC 3442: Classless Static Route Option for DHCP version 4

 * RFC 3825: Dynamic Host Configuration Protocol Option for Coordinate-based Location Configuration Information

 * RFC 3925: Vendor-Identifying Vendor Options for Dynamic Host Configuration Protocol version 4 (DHCPv4)

 * RFC 3942: Reclassifying DHCPv4 Options

 * RFC 4014: Remote Authentication Dial-In User Service (RADIUS) Attributes Suboption for the Dynamic Host Configuration Protocol (DHCP) Relay Agent Information Option

 * RFC 4174: The IPv4 Dynamic Host Configuration Protocol (DHCP) Option for the Internet Storage Name Service

 * RFC 4243: Vendor-Specific Information Suboption for the Dynamic Host Configuration Protocol (DHCP) Relay Agent Option

 * RFC 4361: Node-specific Client Identifiers for Dynamic Host Configuration Protocol Version Four (DHCPv4)

 * RFC 4388: Dynamic Host Configuration Protocol (DHCP) Leasequery

 * RFC 4578: Dynamic Host Configuration Protocol (DHCP) Options for PXE

 * RFC 4776: Dynamic Host Configuration Protocol (DHCPv4 and DHCPv6) Option for Civic Addresses Configuration Information

 * RFC 5010: The Dynamic Host Configuration Protocol Version 4 (DHCPv4) Relay Agent Flags Suboption

 * RFC 5192: DHCP Options for Protocol for Carrying Authentication for Network Access (PANA) Authentication Agent

 * RFC 5223: Discovering Location-to-Service Translation (LoST) Servers Using the Dynamic Host Configuration Protocol (DHCP)

 * RFC 5417: CAPWAP Access Controller DHCP Option

 * RFC 5969: IPv6 Rapid Deployment on IPv4 Infrastructures (6rd)

 * RFC 6225: Dynamic Host Configuration Protocol Options for Coordinate-Based Location Configuration Information

 * RFC 6607: Virtual Subnet Selection Options for DHCPv4 and DHCPv6

 * RFC 6704: Forcerenew Nonce Authentication

 * RFC 6731: Improved Recursive DNS Server Selection for Multi-Interfaced Nodes

 * RFC 6926: DHCPv4 Bulk Leasequery

 * RFC 7291: DHCP Options for the Port Control Protocol (PCP)

 * RFC 7618: Dynamic Allocation of Shared IPv4 Addresses

 * RFC 7710: Captive-Portal Identification Using DHCP or Router Advertisements (RAs)

 * RFC 7724: Active DHCPv4 Lease Query

 * RFC 7839: Access-Network-Identifier Option in DHCP

 * RFC 8357: Generalized UDP Source Port for DHCP Relay

 * RFC 8910: Captive-Portal Identification in DHCP and Router Advertisements (RAs)

 * RFC 8925: IPv6-Only Preferred Option for DHCPv4

 * RFC 8973: DDoS Open Threat Signaling (DOTS) Agent Discovery

 * draft-ietf-dhc-fqdn-option-07.txt

 * TFTP Server Address Option for DHCPv4 [draft-raj-dhc-tftp-addr-option-06.txt: https://tools.ietf.org/html/draft-raj-dhc-tftp-addr-option-06]

 * BOOTP and DHCP Parameters

 *     https://www.iana.org/assignments/bootp-dhcp-parameters

 * DOCSIS(TM) 2.0 Radio Frequency Interface Specification

 *     https://specification-search.cablelabs.com/radio-frequency-interface-specification-2

 * DOCSIS(TM) 3.0 MAC and Upper Layer Protocols Interface Specification

 *     https://specification-search.cablelabs.com/CM-SP-MULPIv3.0

 * PacketCable(TM) 1.0 MTA Device Provisioning Specification

 *     https://specification-search.cablelabs.com/packetcable-mta-device-provisioning-specification

 * PacketCable(TM) 1.5 MTA Device Provisioning Specification

 *     https://specification-search.cablelabs.com/packetcable-1-5-mta-device-provisioning-specification

 * PacketCable(TM) 2.0 E-UE Device Provisioning Data Model Specification

 *     https://specification-search.cablelabs.com/e-ue-provisioning-data-model-specification

 * Business Services over DOCSIS(R) Layer 2 Virtual Private Networks

 *     https://specification-search.cablelabs.com/business-services-over-docsis-layer-2-virtual-private-networks

 * CableHome(TM) 1.1 Specification

 *     https://web.archive.org/web/20060628173459/http://www.cablelabs.com/projects/cablehome/downloads/specs/CH-SP-CH1.1-I11-060407.pdf

 * Broadband Forum TR-111

 *     https://web.archive.org/web/20150307135117/http://www.broadband-forum.org/technical/download/TR-111.pdf

 * Boot Server Discovery Protocol (BSDP)

 *     https://opensource.apple.com/source/bootp/bootp-198.1/Documentation/BSDP.doc

 * [MS-DHCPE] DHCPv4 Option Code 77 (0x4D) - User Class Option

 *     https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-dhcpe/fe8a2dd4-1e8c-4546-bacd-4ae10de02058

 *

 *  * Copyright 2023, Colin McInnes <colin.mcinnes [AT] vecima.com>

 * Added additional CableLabs Vendor Class IDs (Option 60) to CableLabs heuristic from:

 * Remote PHY Specification

 *     https://www.cablelabs.com/specifications/CM-SP-R-PHY

 * Flexible MAC Architecture System Specification

 *     https://www.cablelabs.com/specifications/CM-SP-FMA-SYS

 * Data-Over-Cable Service Interface Specifications, eDOCSIS Specification

 *     https://www.cablelabs.com/specifications/CM-SP-eDOCSIS

 * Data-Over-Cable Service Interface Specifications, IPv4 and IPv6 eRouter Specification

 *     https://www.cablelabs.com/specifications/CM-SP-eRouter

 * OpenCable Tuning Resolver Interface Specification

 *     https://www.cablelabs.com/specifications/OC-SP-TRIF

 * DPoE Demarcation Device Specification

 *     https://www.cablelabs.com/specifications/DPoE-SP-DEMARCv1.0

 *

 * Wireshark - Network traffic analyzer

 * By Gerald Combs <gerald@wireshark.org>

 * Copyright 1998 Gerald Combs

 *

 * SPDX-License-Identifier: GPL-2.0-or-later

 */

/*

 * Some of the development of the DHCP/BOOTP protocol decoder was sponsored by

 * Cable Television Laboratories, Inc. ("CableLabs") based upon proprietary

 * CableLabs' specifications. Your license and use of this protocol decoder

 * does not mean that you are licensed to use the CableLabs'

 * specifications.  If you have questions about this protocol, contact

 * jf.mule [AT] cablelabs.com or c.stuart [AT] cablelabs.com for additional

 * information.

 */

#include "config.h"

#include <stdio.h>    /* for sscanf() */

#include <epan/packet.h>

#include "packet-arp.h"

#include "packet-dns.h"       /* for get_dns_name() */

#include "packet-radius.h"

#include <epan/addr_resolv.h>

#include <epan/prefs.h>

#include <epan/tap.h>

#include <epan/stat_tap_ui.h>

#include <epan/arptypes.h>

#include <epan/expert.h>

#include <epan/uat.h>

#include <epan/sminmpec.h>

#include <epan/tfs.h>

#include <wsutil/str_util.h>

#include <wsutil/strtoi.h>

#include <wsutil/array.h>

#include <wsutil/ws_padding_to.h>

void proto_register_dhcp(void);

void proto_reg_handoff_dhcp(void);

static int dhcp_bootp_tap;

static int proto_dhcp;

static int hf_dhcp_type;

static int hf_dhcp_hw_type;

static int hf_dhcp_hw_len;

static int hf_dhcp_hops;

static int hf_dhcp_id;

static int hf_dhcp_secs;

static int hf_dhcp_flags;

static int hf_dhcp_flags_broadcast;

static int hf_dhcp_flags_reserved;

static int hf_dhcp_ip_client;

static int hf_dhcp_ip_your;

static int hf_dhcp_ip_server;

static int hf_dhcp_ip_relay;

static int hf_dhcp_hw_addr;

static int hf_dhcp_hw_addr_padding;

static int hf_dhcp_hw_ether_addr;

static int hf_dhcp_server;

static int hf_dhcp_file;

static int hf_dhcp_cookie;

static int hf_dhcp_vendor_specific_options;

static int hf_dhcp_bootp;

static int hf_dhcp_fqdn_flags;

static int hf_dhcp_fqdn_s;

static int hf_dhcp_fqdn_o;

static int hf_dhcp_fqdn_e;

static int hf_dhcp_fqdn_n;

static int hf_dhcp_fqdn_mbz;

static int hf_dhcp_fqdn_rcode1;

static int hf_dhcp_fqdn_rcode2;

static int hf_dhcp_fqdn_name;

static int hf_dhcp_fqdn_asciiname;

static int hf_dhcp_pkt_mta_cap_len;

static int hf_dhcp_pkt_mta_cap_type;

static int hf_dhcp_docsis_cm_cap_type;

static int hf_dhcp_docsis_cm_cap_len;

static int hf_dhcp_client_identifier_uuid;

static int hf_dhcp_client_id_iaid;

static int hf_dhcp_client_id_duid_type;

static int hf_dhcp_client_hardware_address;

static int hf_dhcp_client_identifier_duid_llt_hw_type;

static int hf_dhcp_client_identifier_duid_ll_hw_type;

static int hf_dhcp_client_identifier_time;

static int hf_dhcp_client_identifier_link_layer_address;

static int hf_dhcp_client_identifier_link_layer_address_ether;

static int hf_dhcp_client_identifier_enterprise_num;

static int hf_dhcp_client_identifier;

static int hf_dhcp_client_identifier_type;

static int hf_dhcp_client_identifier_undef;

static int hf_dhcp_option_type;

static int hf_dhcp_option_length;

static int hf_dhcp_option_value;

static int hf_dhcp_option_value_8;

static int hf_dhcp_option_value_16;

static int hf_dhcp_option_value_u32;

static int hf_dhcp_option_value_s_secs;

static int hf_dhcp_option_value_u_secs;

static int hf_dhcp_option_value_stringz;

static int hf_dhcp_option_value_ip_address;

static int hf_dhcp_option_value_boolean;

static int hf_dhcp_option_rfc_3396_detected;

static int hf_dhcp_suboption_length;

static int hf_dhcp_option_padding;          /* 0 */

static int hf_dhcp_option_subnet_mask;        /* 1 */

static int hf_dhcp_option_time_offset;        /* 2 */

static int hf_dhcp_option_router;         /* 3 */

static int hf_dhcp_option_time_server;        /* 4 */

static int hf_dhcp_option_name_server;        /* 5 */

static int hf_dhcp_option_domain_name_server;     /* 6 */

static int hf_dhcp_option_log_server;       /* 7 */

static int hf_dhcp_option_quotes_server;        /* 8 */

static int hf_dhcp_option_lpr_server;       /* 9 */

static int hf_dhcp_option_impress_server;       /* 10 */

static int hf_dhcp_option_resource_location_server;   /* 11 */

static int hf_dhcp_option_hostname;       /* 12 */

static int hf_dhcp_option_boot_file_size;       /* 13 */

static int hf_dhcp_option_merit_dump_file;        /* 14 */

static int hf_dhcp_option_domain_name;        /* 15 */

static int hf_dhcp_option_swap_server;        /* 16 */

static int hf_dhcp_option_root_path;        /* 17 */

static int hf_dhcp_option_extension_path;       /* 18 */

static int hf_dhcp_option_ip_forwarding;        /* 19 */

static int hf_dhcp_option_non_local_source_routing;   /* 20 */

static int hf_dhcp_option_policy_filter_ip;     /* 21 - IP address */

static int hf_dhcp_option_policy_filter_subnet_mask;    /* 21 - Subnet mask */

static int hf_dhcp_option_max_datagram_reassembly_size;   /* 22 */

static int hf_dhcp_option_default_ip_ttl;       /* 23 */

static int hf_dhcp_option_path_mtu_aging_timeout;     /* 24 */

static int hf_dhcp_option_path_mtu_plateau_table_item;    /* 25 */

static int hf_dhcp_option_interface_mtu;        /* 26 */

static int hf_dhcp_option_all_subnets_are_local;      /* 27 */

static int hf_dhcp_option_broadcast_address;      /* 28 */

static int hf_dhcp_option_perform_mask_discovery;     /* 29 */

static int hf_dhcp_option_mask_supplier;        /* 30 */

static int hf_dhcp_option_perform_router_discover;      /* 31 */

static int hf_dhcp_option_router_solicitation_address;    /* 32 */

static int hf_dhcp_option_static_route_ip;        /* 33 - Destination IP */

static int hf_dhcp_option_static_route_router;      /* 33 - Router */

static int hf_dhcp_option_trailer_encapsulation;      /* 34 */

static int hf_dhcp_option_arp_cache_timeout;      /* 35 */

static int hf_dhcp_option_ethernet_encapsulation;     /* 36 */

static int hf_dhcp_option_tcp_default_ttl;        /* 37 */

static int hf_dhcp_option_tcp_keepalive_interval;     /* 38 */

static int hf_dhcp_option_tcp_keepalive_garbage;      /* 39 */

static int hf_dhcp_option_nis_domain;       /* 40 */

static int hf_dhcp_option_nis_server;       /* 41 */

static int hf_dhcp_option_ntp_server;       /* 42 */

static int hf_dhcp_option43_suboption;          /* 43 unknown vendor suboption */

static int hf_dhcp_option43_value;          /* 43 suboption value */

static int hf_dhcp_option43_value_8;        /* 43 suboption value */

static int hf_dhcp_option43_value_32;       /* 43 suboption value */

static int hf_dhcp_option43_value_stringz;        /* 43 suboption value */

static int hf_dhcp_option43_value_ip_address;     /* 43 suboption value */

static int hf_dhcp_option43_pxeclient_suboption;      /* 43 suboption */

static int hf_dhcp_option43_pxeclient_padding;      /* 43:0 PXE  */

static int hf_dhcp_option43_pxeclient_mtftp_ip;     /* 43:1 PXE  */

static int hf_dhcp_option43_pxeclient_mtftp_client_port;    /* 43:2 PXE  */

static int hf_dhcp_option43_pxeclient_mtftp_server_port;    /* 43:3 PXE  */

static int hf_dhcp_option43_pxeclient_mtftp_timeout;    /* 43:4 PXE  */

static int hf_dhcp_option43_pxeclient_mtftp_delay;      /* 43:5 PXE  */

static int hf_dhcp_option43_pxeclient_discovery_control;    /* 43:6 PXE  */

static int hf_dhcp_option43_pxeclient_discovery_control_bc; /* 43:6 PXE  */

static int hf_dhcp_option43_pxeclient_discovery_control_mc; /* 43:6 PXE  */

static int hf_dhcp_option43_pxeclient_discovery_control_serverlist; /* 43:6 PXE  */

static int hf_dhcp_option43_pxeclient_discovery_control_bstrap; /* 43:6 PXE  */

static int hf_dhcp_option43_pxeclient_multicast_address;    /* 43:7 PXE  */

static int hf_dhcp_option43_pxeclient_boot_servers;   /* 43:8 PXE  */

static int hf_dhcp_option43_pxeclient_boot_server_type;   /* 43:8 PXE  */

static int hf_dhcp_option43_pxeclient_boot_server_count;    /* 43:8 PXE  */

static int hf_dhcp_option43_pxeclient_boot_server_ip;   /* 43:8 PXE  */

static int hf_dhcp_option43_pxeclient_boot_menu;      /* 43:9 PXE  */

static int hf_dhcp_option43_pxeclient_boot_menu_type;   /* 43:9 PXE  */

static int hf_dhcp_option43_pxeclient_boot_menu_length;   /* 43:9 PXE  */

static int hf_dhcp_option43_pxeclient_boot_menu_desc;   /* 43:9 PXE  */

static int hf_dhcp_option43_pxeclient_menu_prompt;      /* 43:10 PXE  */

static int hf_dhcp_option43_pxeclient_menu_prompt_timeout;    /* 43:10 PXE  */

static int hf_dhcp_option43_pxeclient_menu_prompt_prompt;   /* 43:10 PXE  */

static int hf_dhcp_option43_pxeclient_multicast_address_alloc;  /* 43:11 PXE  */

static int hf_dhcp_option43_pxeclient_credential_types;   /* 43:12 PXE  */

static int hf_dhcp_option43_pxeclient_boot_item;      /* 43:71 PXE  */

static int hf_dhcp_option43_pxeclient_boot_item_type;   /* 43:71 PXE  */

static int hf_dhcp_option43_pxeclient_boot_item_layer;    /* 43:71 PXE  */

static int hf_dhcp_option43_pxeclient_lcm_server;     /* 43:179 PXE  */

static int hf_dhcp_option43_pxeclient_lcm_domain;     /* 43:180 PXE  */

static int hf_dhcp_option43_pxeclient_lcm_nic_option;   /* 43:181 PXE  */

static int hf_dhcp_option43_pxeclient_lcm_workgroup;    /* 43:190 PXE  */

static int hf_dhcp_option43_pxeclient_discovery;      /* 43:191 PXE  */

static int hf_dhcp_option43_pxeclient_configured;     /* 43:192 PXE  */

static int hf_dhcp_option43_pxeclient_lcm_version;      /* 43:193 PXE  */

static int hf_dhcp_option43_pxeclient_lcm_serial;     /* 43:194 PXE  */

static int hf_dhcp_option43_pxeclient_end;        /* 43:255 PXE */

static int hf_dhcp_option43_cl_suboption;       /* 43 suboption */

static int hf_dhcp_option43_cl_padding;       /* 43:0 CL  */

static int hf_dhcp_option43_cl_suboption_request_list;    /* 43:1 CL  */

static int hf_dhcp_option43_cl_device_type;     /* 43:2 CL  */

static int hf_dhcp_option43_cl_esafe_type;        /* 43:3 CL  */

static int hf_dhcp_option43_cl_serial_number;     /* 43:4 CL  */

static int hf_dhcp_option43_cl_hardware_version;      /* 43:5 CL  */

static int hf_dhcp_option43_cl_software_version;      /* 43:6 CL  */

static int hf_dhcp_option43_cl_boot_rom_version;      /* 43:7 CL  */

static int hf_dhcp_option43_cl_oui_bytes;       /* 43:8 CL  */

static int hf_dhcp_option43_cl_oui_string;        /* 43:8 CL  */

static int hf_dhcp_option43_cl_model_number;      /* 43:9 CL  */

static int hf_dhcp_option43_cl_vendor_name10;     /* 43:10 CL  */

static int hf_dhcp_option43_cl_address_realm;     /* 43:11 CL  */

static int hf_dhcp_option43_cl_cm_ps_system_desc;     /* 43:12 CL  */

static int hf_dhcp_option43_cl_cm_ps_firmware_revision;   /* 43:13 CL  */

static int hf_dhcp_option43_cl_firewall_policy_file_version;  /* 43:14 CL  */

static int hf_dhcp_option43_cl_esafe_config_file_devices;   /* 43:15 CL  */

static int hf_dhcp_option43_cl_video_security_tape;   /* 43:18 CL  */

static int hf_dhcp_option43_cl_mta_mac_address;     /* 43:31 CL  */

static int hf_dhcp_option43_cl_correlation_ID;      /* 43:32 CL  */

static int hf_dhcp_option43_cl_vendor_name51;     /* 43:51 CL  */

static int hf_dhcp_option43_cl_cablecard_capability;    /* 43:52 CL  */

static int hf_dhcp_option43_cl_device_id_ca;      /* 43:53 CL  */

static int hf_dhcp_option43_cl_device_id_x509;      /* 43:54 CL  */

static int hf_dhcp_option43_cl_end;       /* 43:255 CL */

static int hf_dhcp_option43_aerohive_suboption;     /* 43 suboption */

static int hf_dhcp_option43_aerohive_unknown;     /* 43:X AEROHIVE */

static int hf_dhcp_option43_aerohive_xiqhostname;     /* 43:225 AEROHIVE */

static int hf_dhcp_option43_aerohive_xiqipaddress;      /* 43:226 AEROHIVE */

static int hf_dhcp_option43_bsdp_suboption;     /* 43 suboption */

static int hf_dhcp_option43_bsdp_message_type;      /* 43:1 BSDP  */

static int hf_dhcp_option43_bsdp_version;       /* 43:2 BSDP  */

static int hf_dhcp_option43_bsdp_server_identifier;   /* 43:3 BSDP  */

static int hf_dhcp_option43_bsdp_server_priority;     /* 43:4 BSDP  */

static int hf_dhcp_option43_bsdp_reply_port;      /* 43:5 BSDP  */

static int hf_dhcp_option43_bsdp_boot_image_list_path;    /* 43:6 BSDP  */

static int hf_dhcp_option43_bsdp_default_boot_image_id;   /* 43:7 BSDP  */

static int hf_dhcp_option43_bsdp_selected_boot_image_id;    /* 43:8 BSDP  */

static int hf_dhcp_option43_bsdp_boot_image_list;     /* 43:9 BSDP  */

static int hf_dhcp_option43_bsdp_netboot_firmware;      /* 43:10 BSDP  */

static int hf_dhcp_option43_bsdp_attributes_filter_list;    /* 43:11 BSDP  */

static int hf_dhcp_option43_bsdp_message_size;      /* 43:12 BSDP  */

static int hf_dhcp_option43_bsdp_boot_image_index;      /* 43 BSDP  */

static int hf_dhcp_option43_bsdp_boot_image_attribute;    /* 43 BSDP  */

static int hf_dhcp_option43_bsdp_boot_image_attribute_install;  /* 43 BSDP  */

static int hf_dhcp_option43_bsdp_boot_image_attribute_kind; /* 43 BSDP  */

static int hf_dhcp_option43_bsdp_boot_image_attribute_reserved; /* 43 BSDP  */

static int hf_dhcp_option43_bsdp_image_desc;      /* 43 BSDP  */

static int hf_dhcp_option43_bsdp_boot_image_name;     /* 43 BSDP  */

static int hf_dhcp_option43_bsdp_boot_image_name_len;   /* 43 BSDP  */

static int hf_dhcp_option43_cisco_suboption;      /* 43 Cisco */

static int hf_dhcp_option43_cisco_unknown;        /* 43 Cisco */

static int hf_dhcp_option43_cisco_unknown1;     /* 43:1 Cisco */

static int hf_dhcp_option43_cisco_unknown2;     /* 43:2 Cisco */

static int hf_dhcp_option43_cisco_unknown3;     /* 43:3 Cisco */

static int hf_dhcp_option43_cisco_nodeid;       /* 43:4 Cisco */

static int hf_dhcp_option43_cisco_unknown5;     /* 43:5 Cisco */

static int hf_dhcp_option43_cisco_unknown6;     /* 43:6 Cisco */

static int hf_dhcp_option43_cisco_model;        /* 43:7 Cisco */

static int hf_dhcp_option43_cisco_apicuuid;     /* 43:8 Cisco */

static int hf_dhcp_option43_cisco_fabricname;     /* 43:9 Cisco */

static int hf_dhcp_option43_cisco_unknown10;      /* 43:10 Cisco */

static int hf_dhcp_option43_cisco_serialno;     /* 43:11 Cisco */

static int hf_dhcp_option43_cisco_clientint;      /* 43:12 Cisco */

static int hf_dhcp_option43_alcatel_suboption;      /* 43 suboption */

static int hf_dhcp_option43_alcatel_padding;      /* 43:0 Alcatel  */

static int hf_dhcp_option43_alcatel_vlan_id;      /* 43:58 Alcatel  */

static int hf_dhcp_option43_alcatel_tftp1;        /* 43:64 Alcatel  */

static int hf_dhcp_option43_alcatel_tftp2;        /* 43:65 Alcatel  */

static int hf_dhcp_option43_alcatel_app_type;     /* 43:66 Alcatel  */

static int hf_dhcp_option43_alcatel_sip_url;      /* 43:67 Alcatel  */

static int hf_dhcp_option43_alcatel_end;        /* 43:255 Alcatel */

static int hf_dhcp_option43_arubaap_controllerip;     /* 43: ArubaAP*/

static int hf_dhcp_option43_arubaiap;       /* 43: ArubaIAP*/

static int hf_dhcp_option43_arubaiap_nameorg;     /* 43: ArubaIAP: Name Organisation*/

static int hf_dhcp_option43_arubaiap_ampip;     /* 43: ArubaIAP: AMP IP Address*/

static int hf_dhcp_option43_arubaiap_password;      /* 43 :ArubaIAP: Password*/

static int hf_dhcp_option_netbios_over_tcpip_name_server;   /* 44 */

static int hf_dhcp_option_netbios_over_tcpip_dd_name_server;  /* 45 */

static int hf_dhcp_option_netbios_over_tcpip_node_type;   /* 46 */

static int hf_dhcp_option_netbios_over_tcpip_scope;   /* 47 */

static int hf_dhcp_option_xwindows_system_font_server;    /* 48 */

static int hf_dhcp_option_xwindows_system_display_manager;    /* 49 */

static int hf_dhcp_option_requested_ip_address;     /* 50 */

static int hf_dhcp_option_ip_address_lease_time;      /* 51 */

static int hf_dhcp_option_option_overload;        /* 52 */

static int hf_dhcp_option_dhcp;         /* 53 */

static int hf_dhcp_option_dhcp_server_id;       /* 54 */

static int hf_dhcp_option_parameter_request_list_item;    /* 55 */

static int hf_dhcp_option_message;          /* 56 */

static int hf_dhcp_option_dhcp_max_message_size;      /* 57 */

static int hf_dhcp_option_renewal_time_value;     /* 58 */

static int hf_dhcp_option_rebinding_time_value;     /* 59 */

static int hf_dhcp_option_vendor_class_id;        /* 60 */

static int hf_dhcp_option_vendor_class_data;      /* 60 */

static int hf_dhcp_option_novell_netware_ip_domain;   /* 62 */

static int hf_dhcp_option63_suboption;        /* 63 suboption */

static int hf_dhcp_option63_value;          /* 63 suboption value */

static int hf_dhcp_option63_value_8;        /* 63 suboption value */

static int hf_dhcp_option63_value_ip_address;     /* 63 suboption value */

static int hf_dhcp_option63_value_boolean;        /* 63 suboption value */

static int hf_dhcp_option63_broadcast;        /* 63:5 */

static int hf_dhcp_option63_preferred_dss_server;     /* 63:6 */

static int hf_dhcp_option63_nearest_nwip_server;      /* 63:7 */

static int hf_dhcp_option63_autoretries;        /* 63:8 */

static int hf_dhcp_option63_autoretry_delay;      /* 63:9 */

static int hf_dhcp_option63_support_netware_v1_1;     /* 63:10 */

static int hf_dhcp_option63_primary_dss;        /* 63:11 */

static int hf_dhcp_option_nis_plus_domain;        /* 64 */

static int hf_dhcp_option_nis_plus_server;        /* 65 */

static int hf_dhcp_option_tftp_server_name;     /* 66 */

static int hf_dhcp_option_bootfile_name;        /* 67 */

static int hf_dhcp_option_mobile_ip_home_agent;     /* 68 */

static int hf_dhcp_option_smtp_server;        /* 69 */

static int hf_dhcp_option_pop3_server;        /* 70 */

static int hf_dhcp_option_nntp_server;        /* 71 */

static int hf_dhcp_option_default_www_server;     /* 72 */

static int hf_dhcp_option_default_finger_server;      /* 73 */

static int hf_dhcp_option_default_irc_server;     /* 74 */

static int hf_dhcp_option_streettalk_server;      /* 75 */

static int hf_dhcp_option_streettalk_da_server;     /* 76 */

static int hf_dhcp_option77_user_class;       /* 77 User Class instance */

static int hf_dhcp_option77_user_class_length;      /* 77 length of User Class instance */

static int hf_dhcp_option77_user_class_data;      /* 77 data of User Class instance */

static int hf_dhcp_option77_user_class_text;      /* 77 User class text */

static int hf_dhcp_option77_user_class_binary_data_length;  /* 77, Microsoft */

static int hf_dhcp_option77_user_class_binary_data;   /* 77, Microsoft */

static int hf_dhcp_option77_user_class_padding;     /* 77, Microsoft */

static int hf_dhcp_option77_user_class_name_length;   /* 77, Microsoft */

static int hf_dhcp_option77_user_class_name;        /* 77, Microsoft */

static int hf_dhcp_option77_user_class_description_length;  /* 77, Microsoft */

static int hf_dhcp_option77_user_class_description;   /* 77, Microsoft */

static int hf_dhcp_option_slp_directory_agent_value;    /* 78 */

static int hf_dhcp_option_slp_directory_agent_slpda_address;  /* 78 */

static int hf_dhcp_option_slp_service_scope_value;      /* 79 */

static int hf_dhcp_option_slp_service_scope_string;   /* 79 */

static int hf_dhcp_option82_suboption;        /* 82 suboption */

static int hf_dhcp_option82_value;          /* 82 suboption value */

static int hf_dhcp_option82_value_8;        /* 82 suboption value */

static int hf_dhcp_option82_value_16;       /* 82 suboption value */

static int hf_dhcp_option82_value_32;       /* 82 suboption value */

static int hf_dhcp_option82_value_ip_address;     /* 82 suboption value */

static int hf_dhcp_option82_value_stringz;        /* 82 suboption value */

static int hf_dhcp_option82_padding;        /* 82:0 */

static int hf_dhcp_option82_agent_circuit_id;     /* 82:1 */

static int hf_dhcp_option82_agent_remote_id;      /* 82:2 */

static int hf_dhcp_option82_reserved;       /* 82:3 */

static int hf_dhcp_option82_docsis_device_class;      /* 82:4 */

static int hf_dhcp_option82_link_selection;     /* 82:5 */

static int hf_dhcp_option82_subscriber_id;        /* 82:6 */

static int hf_dhcp_option82_radius_attributes;      /* 82:7 */

static int hf_dhcp_option82_authentication;     /* 82:8 */

static int hf_dhcp_option82_vi;         /* 82:9 */

                  /* 82:9 suboptions */

static int hf_dhcp_option82_vi_enterprise;

static int hf_dhcp_option82_vi_data_length;

static int hf_dhcp_option82_vi_cl_option;

static int hf_dhcp_option82_vi_cl_option_length;

static int hf_dhcp_option82_vi_cl_tag;

static int hf_dhcp_option82_vi_cl_tag_length;

static int hf_dhcp_option82_vi_cl_docsis_version;     /* 82:9:4491:1 */

static int hf_dhcp_option82_vi_cl_dpoe_system_version;    /* 82:9:4491:2 */

static int hf_dhcp_option82_vi_cl_dpoe_system_pbb_service;    /* 82:9:4491:4 */

static int hf_dhcp_option82_vi_cl_service_class_name;   /* 82:9:4491:5 */

static int hf_dhcp_option82_vi_cl_mso_defined_text;   /* 82:9:4491:6 */

static int hf_dhcp_option82_vi_cl_secure_file_transfer_uri; /* 82:9:4491:7 */

                  /* 82:9 suboptions end */

static int hf_dhcp_option82_flags;          /* 82:10 */

static int hf_dhcp_option82_flags_unicast;      /* 82:10 */

static int hf_dhcp_option82_flags_reserved;     /* 82:10 */

static int hf_dhcp_option82_server_id_override;     /* 82:11 */

static int hf_dhcp_option82_relay_agent_id;     /* 82:12 */

static int hf_dhcp_option82_option_ani_att;     /* 82:13 */

static int hf_dhcp_option82_option_ani_att_res;

static int hf_dhcp_option82_option_ani_att_att;

static int hf_dhcp_option82_option_ani_network_name;    /* 82:14 */

static int hf_dhcp_option82_option_ani_ap_name;     /* 82:15 */

static int hf_dhcp_option82_option_ani_ap_bssid;      /* 82:16 */

static int hf_dhcp_option82_option_ani_operator_id;   /* 82:17 */

static int hf_dhcp_option82_option_ani_operator_realm;    /* 82:18 */

static int hf_dhcp_option82_option_source_port;     /* 82:19 */

static int hf_dhcp_option82_link_selection_cisco;     /* 82:150 */

static int hf_dhcp_option82_vrf_name_vpn_id;      /* 82:151 */

                  /* 82:151 suboptions */

static int hf_dhcp_option82_vrf_name_global;

static int hf_dhcp_option82_vrf_name;

static int hf_dhcp_option82_vrf_name_vpn_id_oui;

static int hf_dhcp_option82_vrf_name_vpn_id_index;

                  /* 82:151 suboptions end */

static int hf_dhcp_option82_server_id_override_cisco;   /* 82:152 */

static int hf_dhcp_option_isns_functions;

static int hf_dhcp_option_isns_functions_enabled;

static int hf_dhcp_option_isns_functions_dd_authorization;

static int hf_dhcp_option_isns_functions_sec_policy_distibution;

static int hf_dhcp_option_isns_functions_reserved;

static int hf_dhcp_option_isns_discovery_domain_access;

static int hf_dhcp_option_isns_discovery_domain_access_enabled;

static int hf_dhcp_option_isns_discovery_domain_access_control_node;

static int hf_dhcp_option_isns_discovery_domain_access_iscsi_target;

static int hf_dhcp_option_isns_discovery_domain_access_iscsi_inititator;

static int hf_dhcp_option_isns_discovery_domain_access_ifcp_target_port;

static int hf_dhcp_option_isns_discovery_domain_access_ifcp_initiator_port;

static int hf_dhcp_option_isns_discovery_domain_access_reserved;

static int hf_dhcp_option_isns_administrative_flags;

static int hf_dhcp_option_isns_administrative_flags_enabled;

static int hf_dhcp_option_isns_administrative_flags_heartbeat;

static int hf_dhcp_option_isns_administrative_flags_management_scns;

static int hf_dhcp_option_isns_administrative_flags_default_dd;

static int hf_dhcp_option_isns_administrative_flags_reserved;

static int hf_dhcp_option_isns_server_security_bitmap;

static int hf_dhcp_option_isns_server_security_bitmap_enabled;

static int hf_dhcp_option_isns_server_security_bitmap_ike_ipsec_enabled;

static int hf_dhcp_option_isns_server_security_bitmap_main_mode;

static int hf_dhcp_option_isns_server_security_bitmap_aggressive_mode;

static int hf_dhcp_option_isns_server_security_bitmap_pfs;

static int hf_dhcp_option_isns_server_security_bitmap_transport_mode;

static int hf_dhcp_option_isns_server_security_bitmap_tunnel_mode;

static int hf_dhcp_option_isns_server_security_bitmap_reserved;

static int hf_dhcp_option_isns_heartbeat_originator_addr;

static int hf_dhcp_option_isns_primary_server_addr;

static int hf_dhcp_option_isns_secondary_server_addr_list;

static int hf_dhcp_option_novell_dss_string;      /* 85 */

static int hf_dhcp_option_novell_dss_ip;        /* 85 */

static int hf_dhcp_option_novell_ds_tree_name;      /* 86 */

static int hf_dhcp_option_novell_ds_context;      /* 87 */

static int hf_dhcp_option_dhcp_authentication_protocol;   /* 90 */

static int hf_dhcp_option_dhcp_authentication_alg_delay;    /* 90 */

static int hf_dhcp_option_dhcp_authentication_algorithm;    /* 90 */

static int hf_dhcp_option_dhcp_authentication_rdm;      /* 90 */

static int hf_dhcp_option_dhcp_authentication_rdm_replay_detection;   /* 90 */

static int hf_dhcp_option_dhcp_authentication_rdm_rdv;    /* 90 */

static int hf_dhcp_option_dhcp_authentication_secret_id;    /* 90 */

static int hf_dhcp_option_dhcp_authentication_hmac_md5_hash;  /* 90 */

static int hf_dhcp_option_dhcp_authentication_information;    /* 90 */

static int hf_dhcp_option_client_last_transaction_time;   /* 91 */

static int hf_dhcp_option_associated_ip_option;     /* 92 */

static int hf_dhcp_option_client_system_architecture;   /* 93 */

static int hf_dhcp_option_client_network_id_major_ver;    /* 94 */

static int hf_dhcp_option_client_network_id_minor_ver;    /* 94 */

static int hf_dhcp_option_civic_location_what;      /* 99 */

static int hf_dhcp_option_civic_location_country;     /* 99 */

static int hf_dhcp_option_civic_location_ca_type;     /* 99 */

static int hf_dhcp_option_civic_location_ca_length;   /* 99 */

static int hf_dhcp_option_civic_location_ca_value;      /* 99 */

static int hf_dhcp_option_tz_pcode;       /* 100 */

static int hf_dhcp_option_tz_tcode;       /* 101 */

static int hf_dhcp_option_ipv6_only_preferred_wait_time;    /* 108 */

static int hf_dhcp_option_netinfo_parent_server_address;    /* 112 */

static int hf_dhcp_option_netinfo_parent_server_tag;    /* 113 */

static int hf_dhcp_option_captive_portal;       /* 114 (ex 160) */

static int hf_dhcp_option_dhcp_auto_configuration;      /* 116 */

static int hf_dhcp_option_dhcp_name_service_search_option;    /* 117 */

static int hf_dhcp_option_dhcp_dns_domain_search_list_fqdn;   /* 119 */

static int hf_dhcp_option_sip_server_enc;       /* 120 */

static int hf_dhcp_option_sip_server_name;        /* 120 */

static int hf_dhcp_option_sip_server_address;     /* 120 */

static int hf_dhcp_option_classless_static_route;     /* 120 */

static int hf_dhcp_option_rfc3825_error;        /* 123 */

static int hf_dhcp_option_rfc3825_latitude;     /* 123 */

static int hf_dhcp_option_rfc3825_longitude;      /* 123 */

static int hf_dhcp_option_rfc3825_latitude_res;     /* 123 */

static int hf_dhcp_option_rfc3825_longitude_res;      /* 123 */

static int hf_dhcp_option_rfc3825_altitude;     /* 123 */

static int hf_dhcp_option_rfc3825_altitude_res;     /* 123 */

static int hf_dhcp_option_rfc3825_altitude_type;      /* 123 */

static int hf_dhcp_option_rfc3825_map_datum;      /* 123 */

static int hf_dhcp_option_cl_dss_id_option;     /* 123 CL */

static int hf_dhcp_option_cl_dss_id_len;        /* 123 CL */

static int hf_dhcp_option_cl_dss_id;        /* 123 CL */

static int hf_dhcp_option_vi_class_cl_address_mode;   /* 124 */

static int hf_dhcp_option_vi_class_enterprise;      /* 124 */

static int hf_dhcp_option_vi_class_data_length;     /* 124 */

static int hf_dhcp_option_vi_class_data_item_length;    /* 124 */

static int hf_dhcp_option_vi_class_data_item_data;      /* 124 */

static int hf_dhcp_option125_enterprise;

static int hf_dhcp_option125_length;

static int hf_dhcp_option125_value;       /* 125 suboption value */

static int hf_dhcp_option125_value_8;       /* 125 suboption value */

static int hf_dhcp_option125_value_16;        /* 125 suboption value */

static int hf_dhcp_option125_value_ip_address;      /* 125 suboption value */

static int hf_dhcp_option125_value_stringz;     /* 125 suboption value */

static int hf_dhcp_option125_tr111_suboption;     /* 125 suboption */

static int hf_dhcp_option125_tr111_device_manufacturer_oui; /* 125:TR-111 1 */

static int hf_dhcp_option125_tr111_device_serial_number;    /* 125:TR-111 2 */

static int hf_dhcp_option125_tr111_device_product_class;    /* 125:TR-111 3 */

static int hf_dhcp_option125_tr111_gateway_manufacturer_oui;  /* 125:TR-111 4 */

static int hf_dhcp_option125_tr111_gateway_serial_number;   /* 125:TR-111 5 */

static int hf_dhcp_option125_tr111_gateway_product_class;   /* 125:TR-111 6 */

static int hf_dhcp_option125_cl_suboption;        /* 125 suboption */

static int hf_dhcp_option125_cl_option_request;     /* 125:CL 1 */

static int hf_dhcp_option125_cl_tftp_server_addresses;    /* 125:CL 2 */

static int hf_dhcp_option125_cl_erouter_container_option;   /* 125:CL 3 */

static int hf_dhcp_option125_cl_mib_environment_indicator_option; /* 125:CL 4 */

static int hf_dhcp_option125_cl_modem_capabilities;   /* 125:CL 5 */

static int hf_dhcp_option_subnet_selection_option;      /* 118 */

static int hf_dhcp_option_pana_agent;       /* 136 */

static int hf_dhcp_option_lost_server_domain_name;      /* 137 */

static int hf_dhcp_option_capwap_access_controller;   /* 138 */

static int hf_dhcp_option_andsf_server;       /* 142 */

static int hf_dhcp_option_forcerenew_nonce_algo;      /* 145 */

static int hf_dhcp_option_rdnss_reserved;       /* 146 */

static int hf_dhcp_option_rdnss_pref;       /* 146 */

static int hf_dhcp_option_rdnss_prim_dns_server;      /* 146 */

static int hf_dhcp_option_rdnss_sec_dns_server;     /* 146 */

static int hf_dhcp_option_rdnss_domain;       /* 146 */

static int hf_dhcp_option_dots_ri;        /* 147 */

static int hf_dhcp_option_dots_address;       /* 148 */

static int hf_dhcp_option_tftp_server_address;      /* 150 */

static int hf_dhcp_option_bulk_lease_status_code;     /* 151 */

static int hf_dhcp_option_bulk_lease_status_message;    /* 151 */

static int hf_dhcp_option_bulk_lease_base_time;     /* 152 */

static int hf_dhcp_option_bulk_lease_start_time_of_state;   /* 153 */

static int hf_dhcp_option_bulk_lease_query_start;     /* 154 */

static int hf_dhcp_option_bulk_lease_query_end;     /* 155 */

static int hf_dhcp_option_bulk_lease_dhcp_state;      /* 156 */

static int hf_dhcp_option_bulk_lease_data_source;     /* 157 */

static int hf_dhcp_option_pcp_list_length;        /* 158 */

static int hf_dhcp_option_pcp_server;       /* 158 */

static int hf_dhcp_option_portparams_offset;      /* 159 */

static int hf_dhcp_option_portparams_psid_length;     /* 159 */

static int hf_dhcp_option_portparams_psid;        /* 159 */

static int hf_dhcp_option_mudurl;         /* 161 */

static int hf_dhcp_dnr_instance;        /* 162 */

static int hf_dhcp_dnr_instance_len;        /* 162 */

static int hf_dhcp_dnr_svcpriority;       /* 162 */

static int hf_dhcp_dnr_auth_domain_name_len;      /* 162 */

static int hf_dhcp_dnr_auth_domain_name;      /* 162 */

static int hf_dhcp_dnr_addrs_len;       /* 162 */

static int hf_dhcp_dnr_addrs;         /* 162 */

static int hf_dhcp_dnr_addrs_ip;        /* 162 */

static int hf_dhcp_option_pxe_config_file;        /* 209 */

static int hf_dhcp_option_pxe_path_prefix;        /* 210 */

static int hf_dhcp_option_pxe_reboot_time;        /* 211 */

static int hf_dhcp_option_6RD_ipv4_mask_len;      /* 212 */

static int hf_dhcp_option_6RD_prefix_len;       /* 212 */

static int hf_dhcp_option_6RD_prefix;       /* 212 */

static int hf_dhcp_option_6RD_border_relay_ip;      /* 212 */

static int hf_dhcp_option242_avaya;       /* 242 */

static int hf_dhcp_option242_avaya_tlssrvr;     /* 242 */

static int hf_dhcp_option242_avaya_httpsrvr;      /* 242 */

static int hf_dhcp_option242_avaya_httpdir;     /* 242 */

static int hf_dhcp_option242_avaya_static;        /* 242 */

static int hf_dhcp_option242_avaya_mcipadd;     /* 242 */

static int hf_dhcp_option242_avaya_dot1x;       /* 242 */

static int hf_dhcp_option242_avaya_icmpdu;        /* 242 */

static int hf_dhcp_option242_avaya_icmpred;     /* 242 */

static int hf_dhcp_option242_avaya_l2q;       /* 242 */

static int hf_dhcp_option242_avaya_l2qvlan;     /* 242 */

static int hf_dhcp_option242_avaya_loglocal;      /* 242 */

static int hf_dhcp_option242_avaya_phy1stat;      /* 242 */

static int hf_dhcp_option242_avaya_phy2stat;      /* 242 */

static int hf_dhcp_option242_avaya_procpswd;      /* 242 */

static int hf_dhcp_option242_avaya_procstat;      /* 242 */

static int hf_dhcp_option242_avaya_snmpadd;     /* 242 */

static int hf_dhcp_option242_avaya_snmpstring;      /* 242 */

static int hf_dhcp_option242_avaya_vlantest;      /* 242 */

static int hf_dhcp_option_private_proxy_autodiscovery;    /* 252 */

static int hf_dhcp_option_end;          /* 255 */

static int hf_dhcp_option_end_overload;       /* 255 (with overload)*/

static int hf_dhcp_vendor_unknown_suboption;

static int hf_dhcp_suboption_data;

static int hf_dhcp_pc_ietf_ccc_suboption;

static int hf_dhcp_pc_i05_ccc_suboption;

static int hf_dhcp_cl_ietf_ccc_dev_realm_unc_key_nom_timeout;

static int hf_dhcp_cl_ietf_ccc_dev_realm_unc_key_max_timeout;

static int hf_dhcp_cl_ietf_ccc_dev_realm_unc_key_max_retries;

static int hf_dhcp_cl_ietf_ccc_dev_prov_unc_key_nom_timeout;

static int hf_dhcp_cl_ietf_ccc_dev_prov_unc_key_max_timeout;

static int hf_dhcp_cl_ietf_ccc_dev_prov_unc_key_max_retries;

static int ett_dhcp;

static int ett_dhcp_flags;

static int ett_dhcp_option;

static int ett_dhcp_option43_suboption;

static int ett_dhcp_option43_suboption_discovery;

static int ett_dhcp_option43_suboption_tree;

static int ett_dhcp_option63_suboption;

static int ett_dhcp_option77_instance;

static int ett_dhcp_option82_suboption;

static int ett_dhcp_option82_suboption9;

static int ett_dhcp_option82_suboption10;

static int ett_dhcp_option124_vendor_class_data_item;

static int ett_dhcp_option125_suboption;

static int ett_dhcp_option125_tr111_suboption;

static int ett_dhcp_option125_cl_suboption;

static int ett_dhcp_option242_suboption;

static int ett_dhcp_fqdn;

static int ett_dhcp_fqdn_flags;

static int ett_dhcp_filename_option;

static int ett_dhcp_server_hostname;

static int ett_dhcp_isns_functions;

static int ett_dhcp_isns_discovery_domain_access;

static int ett_dhcp_isns_administrative_flags;

static int ett_dhcp_isns_server_security_bitmap;

static int ett_dhcp_isns_secondary_server_addr;

static int ett_dhcp_o43_bsdp_boot_image;

static int ett_dhcp_o43_bsdp_attributes;

static int ett_dhcp_o43_bsdp_image_desc_list;

static int ett_dhcp_o43_bsdp_image_desc;

static int ett_dhcp_o43_bsdp_attributes_flags;

static int ett_dhcp_option158_pcp_list;

static int ett_dhcp_dnr_instance;

static int ett_dhcp_dnr_instance_addrs;

static expert_field ei_dhcp_bad_length;

static expert_field ei_dhcp_bad_bitfield;

static expert_field ei_dhcp_missing_subopt_length;

static expert_field ei_dhcp_missing_subopt_value;

static expert_field ei_dhcp_mal_duid;

static expert_field ei_dhcp_rfc3396_refer_last_option;

static expert_field ei_dhcp_opt_overload_wrong_field;

static expert_field ei_dhcp_opt_overload_file_end_missing;

static expert_field ei_dhcp_opt_overload_sname_end_missing;

static expert_field ei_dhcp_subopt_unknown_type;

static expert_field ei_dhcp_option_civic_location_bad_cattype;

static expert_field ei_dhcp_option_dhcp_name_service_invalid;

static expert_field ei_dhcp_option_sip_server_address_encoding;

static expert_field ei_dhcp_option_classless_static_route;

static expert_field ei_dhcp_option125_enterprise_malformed;

static expert_field ei_dhcp_option_6RD_malformed;

static expert_field ei_dhcp_option82_vi_cl_tag_unknown;

static expert_field ei_dhcp_option_parse_err;

static expert_field ei_dhcp_nonstd_option_data;

static expert_field ei_dhcp_suboption_invalid;

static expert_field ei_dhcp_secs_le;

static expert_field ei_dhcp_end_option_missing;

static expert_field ei_dhcp_client_address_not_given;

static expert_field ei_dhcp_server_name_overloaded_by_dhcp;

static expert_field ei_dhcp_boot_filename_overloaded_by_dhcp;

static expert_field ei_dhcp_option_isns_ignored_bitfield;

static expert_field ei_dhcp_option242_avaya_l2qvlan_invalid;

static expert_field ei_dhcp_option242_avaya_vlantest_invalid;

static expert_field ei_dhcp_option93_client_arch_ambiguous;

static expert_field ei_dhcp_option_dnr_adn_only_mode;

static dissector_table_t dhcp_option_table;

static dissector_table_t dhcp_enterprise_class_table;

static dissector_table_t dhcp_enterprise_specific_table;

static heur_dissector_list_t dhcp_vendor_id_subdissector;

static heur_dissector_list_t dhcp_vendor_info_subdissector;

static dissector_handle_t dhcp_handle;

static dissector_handle_t dhcpopt_basic_handle;

static dissector_handle_t svc_params_handle;

typedef struct dhcp_option_data

{

  unsigned char option;

  uint8_t *overload;

  const char *dhcp_type;

  const uint8_t *vendor_class_id;

} dhcp_option_data_t;

#define DHCP_HW_IS_ETHER(hwtype, length) ((hwtype == 1 || hwtype == 6) && length == 6)

/* RFC2937 The Name Service Search Option for DHCP */

#define RFC2937_LOCAL_NAMING_INFORMATION         0

#define RFC2937_DOMAIN_NAME_SERVER_OPTION        6

#define RFC2937_NETWORK_INFORMATION_SERVERS_OPTION      41

#define RFC2937_NETBIOS_OVER_TCP_IP_NAME_SERVER_OPTION      44

#define RFC2937_NETWORK_INFORMATION_SERVICE_PLUS_SERVERS_OPTION   65

/* RFC3825decoder error codes of the conversion function */

#define RFC3825_NOERROR         0

#define RFC3825_LATITUDE_OUTOFRANGE     1

#define RFC3825_LATITUDE_UNCERTAINTY_OUTOFRANGE   2

#define RFC3825_LONGITUDE_OUTOFRANGE      3

#define RFC3825_LONGITUDE_UNCERTAINTY_OUTOFRANGE  4

#define RFC3825_ALTITUDE_OUTOFRANGE     5

#define RFC3825_ALTITUDE_UNCERTAINTY_OUTOFRANGE   6

#define RFC3825_ALTITUDE_TYPE_OUTOFRANGE    7

#define RFC3825_DATUM_TYPE_OUTOFRANGE     8

#define DUID_LLT    1

#define DUID_EN     2

#define DUID_LL     3

struct rfc3825_location_fixpoint_t {

  int64_t latitude; /* latitude in degrees, allowed range from -90deg to 90deg.

           Fixpoint A(8,25) with 34 bits */

  uint8_t latitude_res; /* the resolution of the latitude in bits, allowed range is from 0 to 34.

           6 bits. */

  int64_t longitude;  /* longitude in degrees, range from -180deg to 180deg.

           Fixpoint A(8,25) with 34 bits */

  uint8_t longitude_res;  /* the resolution of the longitude in bits, allowed range is from 0 to 34.

           6 bits. */

  int32_t altitude; /* the altitude, 30 bits.

           Depending on alt_type this are meters or floors, no range limit.

           altitude_type==1: A(13,8) with 22 bits

           altitude_type==2: A(13,8) with 22 bits */

  uint8_t altitude_res; /* the resolution of the altitude in bits, allowed range is from 0 to 30.

           6 bits.

           altitude_type==1: any value between 0 and 30

           altitude_type==2: either 0 (floor unknown) or 30 */

  uint8_t altitude_type;  /* the type of the altitude, 4 bits. allowed values are:

           0: unknown

           1: altitude in meters

           2: altitude in floors */

  uint8_t datum_type; /* the map datum used for the coordinates. 8 bits.

           All values are allowed although currently only the

           following ones are defined:

           1: WGS84

           2: NAD83/NAVD88

           3: NAD83/MLLW */

};

/* The rfc3825_location_decimal_t structure holds the location parameters

 * in decimal (floating point) format.

 */

struct rfc3825_location_decimal_t {

  double latitude;  /* latitude in degrees, allowed range from -90deg to 90deg */

  double latitude_res;  /* the uncertainty of the latitude in grad, "0.01" means +-0.01deg

           from the altitude. During conversion this will be rounded to

           next smaller value which can be represented in fixpoint arithmetic */

  double longitude; /* longitude in degrees, range from -180deg to 180deg */

  double longitude_res; /* the uncertainty of the longitude in grad, "0.01" means +-0.01deg

           from the longitude. During conversion this will be rounded to

           next smaller value which can be represented in fixpoint arithmetic */

  double altitude;  /* the altitude, depending on alt_type this are meters or floors, no range limit */

  double altitude_res;  /* the uncertainty of the altitude in either:

           - altitude-type=meters: "10" means 10 meters which means +-10 meters from the altitude

           - altitude-type=floors: either 0 (unknown) or 30 (exact) */

  int altitude_type;  /* the type of the altitude, allowed values are

           0: unknown

           1: altitude in meters

           2: altitude in floors */

  int datum_type;    /* the map datum used for the coordinates.

            All values are allowed although currently only the

            following ones are defined:

            1: WGS84

            2: NAD83/NAVD88

            3: NAD83/MLLW */

};

/* For managing split options with RFC 3396 */

struct rfc3396_for_option_t {

  unsigned int total_number_of_block;

  unsigned int index_current_block;

  tvbuff_t* tvb_composite;

};

enum {

  RFC_3361_ENC_FQDN,

  RFC_3361_ENC_IPADDR

};

static void dissect_vendor_avaya_param(proto_tree *tree, packet_info *pinfo, proto_item *vti,

    tvbuff_t *tvb, unsigned optoff, wmem_strbuf_t *avaya_param_buf);

/* converts fixpoint presentation into decimal presentation

   also converts values which are out of range to allow decoding of received data */

static int rfc3825_fixpoint_to_decimal(struct rfc3825_location_fixpoint_t *fixpoint, struct rfc3825_location_decimal_t *decimal);

/* decodes the LCI string received from DHCP into the fixpoint values */

static void rfc3825_lci_to_fixpoint(const unsigned char lci[16], struct rfc3825_location_fixpoint_t *fixpoint);

/* Map Datum Types used for the coordinates (RFC 3825) */

static const value_string map_datum_type_values[] = {

  { 1,  "WGS 84" },

  { 2,  "NAD83 (NAVD88)" },

  { 3,  "NAD83 (MLLW)" },

  { 0,  NULL }

};

/* Altitude Types used for the coordinates (RFC 3825) */

static const value_string altitude_type_values[] = {

  { 1,  "Meters" },

  { 2,  "Floors" },

  { 0,  NULL }

};

/* AutoConfigure (RFC 2563) */

static const value_string dhcp_autoconfig[] = {

  { 0,  "DoNotAutoConfigure"},

  { 1,  "AutoConfigure"},

  { 0,  NULL }

};

/* Error Types for RFC 3825 coordinate location decoding */

static const value_string rfc3825_error_types[] = {

  { 1,  "Latitude is out of range [-90,90]"},

  { 2,  "Latitude Uncertainty is out of range [0,90]"},

  { 3,  "Longitude is out of range [-180,180]"},

  { 4,  "Longitude Uncertainty is out of range [0,180]"},

  { 5,  "Altitude is out of range [-(2^21),(2^21)-1]"},

  { 6,  "Altitude Uncertainty is out of range [0,2^20]"},

  { 7,  "Altitude Type is out of range [0,2]"},

  { 8,  "Datum is out of range [1,3]"},

  { 0,  NULL }

};

/* Civic Address What field (RFC 4776) */

static const value_string civic_address_what_values[] = {

  { 0,  "Location of the DHCP server" },

  { 1,  "Location of the network element believed to be closest to the client" },

  { 2,  "Location of the client"},

  { 0, NULL}

};

/* Civic Address Type field (RFC 4119, RFC 4776, RFC 5139) */

static const value_string civic_address_type_values[] = {

  {   0,  "Language" },

  {   1,  "A1" },

  {   2,  "A2" },

  {   3,  "A3" },

  {   4,  "A4" },

  {   5,  "A5" },

  {   6,  "A6" },

  {  16,  "PRD (Leading street direction)" },

  {  17,  "POD (Trailing street suffix)" },

  {  18,  "STS (Street suffix)" },

  {  19,  "HNO (House number)" },

  {  20,  "HNS (House number suffix)" },

  {  21,  "LMK (Landmark or vanity address)" },

  {  22,  "LOC (Additional location information)" },

  {  23,  "NAM" },

  {  24,  "PC (Postal/ZIP code)" },

  {  25,  "BLD (Building)" },

  {  26,  "UNIT" },

  {  27,  "FLR (Floor)" },

  {  28,  "ROOM" },

  {  29,  "PLC (Place-type)" },

  {  30,  "PCN (Postal community name)" },

  {  31,  "POBOX" },

  {  32,  "ADDCODE (Additional Code)" },

  {  33,  "SEAT" },

  {  34,  "RD (Primary road or street)" },

  {  35,  "RDSEC (Road section)" },

  {  36,  "RDBR (Road branch)" },

  {  37,  "RDSUBBR (Road sub-branch)" },

  {  38,  "PRM (Road pre-modifier)" },

  {  39,  "POM (Road post-modifier" },

  { 128,  "Script" },

  { 0, NULL }

};

static const value_string cablelab_ipaddr_mode_vals[] = {

  { 1, "IPv4" },

  { 2, "IPv6" },

  { 0, NULL }

};

static const value_string duidtype_vals[] =

{

  { DUID_LLT, "link-layer address plus time" },

  { DUID_EN,  "assigned by vendor based on Enterprise number" },

  { DUID_LL,  "link-layer address" },

  { 0, NULL }

};

static const value_string forcerenew_nonce_algo_vals[] = {

  { 1, "HMAC-MD5" },

  { 0, NULL },

};

static const value_string rdnss_pref_vals[] = {

  { 0, "Medium" },

  { 1, "High" },

  { 2, "Reserved" },

  { 3, "Low" },

  { 0, NULL },

};

static const value_string bulk_lease_dhcp_status_code_vals[] = {

  { 0, "Success" },

  { 1, "UpsecFail" },

  { 2, "QueryTerminated" },

  { 3, "MalformedQuery" },

  { 4, "NotAllowed" },

  { 5, "DataMissing" },

  { 6, "ConnectionActive" },

  { 7, "CatchUpComplete" },

  { 8, "TLSConnectionRefused" },

  { 0, NULL },

};

static const value_string bulk_lease_dhcp_state_vals[] = {

  { 1, "Available" },

  { 2, "Active" },

  { 3, "Expired" },

  { 4, "Released" },

  { 5, "Abandoned" },

  { 6, "Reset" },

  { 7, "Remote" },

  { 8, "Transitioning" },

  { 0, NULL },

};

static const value_string o43pxeclient_boot_server_types[] = {

  {  0, "PXE bootstrap server" },

  {  1, "Microsoft Windows NT Boot Server" },

  {  2, "Intel LCM Boot Server" },

  {  3, "DOS/UNDI Boot Server" },

  {  4, "NEC ESMPRO Boot Server" },

  {  5, "IBM WSoD Boot Server" },

  {  6, "IBM LCCM Boot Server" },

  {  7, "CA Unicenter TNG Boot Server" },

  {  8, "HP OpenView Boot Server" },

  {  65535, "PXE API Test server" },

  {  0, NULL },

};

static const value_string o43pxeclient_boot_menu_types[] = {

  {  0, "Local boot" },

  {  0, NULL },

};

static bool novell_string;

static int dhcp_uuid_endian = ENC_LITTLE_ENDIAN;

static const enum_val_t dhcp_uuid_endian_vals[] = {

  { "LE", "Little Endian",  ENC_LITTLE_ENDIAN},

  { "BE", "Big Endian", ENC_BIG_ENDIAN },

  { NULL, NULL, 0 }

};

#define DHCP_SECS_ENDIAN_AUTODETECT -1

static int dhcp_secs_endian = DHCP_SECS_ENDIAN_AUTODETECT;

static const enum_val_t dhcp_secs_endian_vals[] = {

  { "Autodetect", "Autodetect", DHCP_SECS_ENDIAN_AUTODETECT},

  { "LE", "Little Endian", ENC_LITTLE_ENDIAN},

  { "BE", "Big Endian", ENC_BIG_ENDIAN },

  { NULL, NULL, 0 }

};

#define DHCP_UDP_PORT_RANGE  "67-68,4011"

#define PROXYDHCP_UDP_PORT   4011

#define BOOTP_BC  0x8000

#define BOOTP_MBZ 0x7FFF

/* FQDN stuff */

#define F_FQDN_S  0x01

#define F_FQDN_O  0x02

#define F_FQDN_E  0x04

#define F_FQDN_N  0x08

#define F_FQDN_MBZ  0xf0

#define ISNS_BITFIELD_NZ_MUST_BE_IGNORED(mask, ena_flag)    \

  ((mask) && !((mask) & (ena_flag)))

/* iSNS bit fields */

#define F_ISNS_FUNCTIONS_ENABLED  0x0001

#define F_ISNS_FUNCTIONS_DD_AUTH  0x0002

#define F_ISNS_FUNCTIONS_SEC_POLICY 0x0004

#define F_ISNS_FUNCTIONS_RESERVED 0xFFF8

#define F_ISNS_DD_ACCESS_ENABLED    0x0001

#define F_ISNS_DD_ACCESS_CTRL_NODE    0x0002

#define F_ISNS_DD_ACCESS_ISCSI_TARGET   0x0004

#define F_ISNS_DD_ACCESS_ISCSI_INITIATOR  0x0008

#define F_ISNS_DD_ACCESS_IFCP_TARGET_PORT 0x0010

#define F_ISNS_DD_ACCESS_IFCP_INITIATOR_PORT  0x0020

#define F_ISNS_DD_ACCESS_RESERVED   0xFFC0

#define F_ISNS_ADMIN_FLAGS_ENABLED    0x0001

#define F_ISNS_ADMIN_FLAGS_HEARTBEAT    0x0002

#define F_ISNS_ADMIN_FLAGS_MANAGEMENT_SCNS  0x0004

#define F_ISNS_ADMIN_FLAGS_DEFAULT_DD   0x0008

#define F_ISNS_ADMIN_FLAGS_RESERVED   0xFFF0

#define F_ISNS_SRV_SEC_BITMAP_ENABLED   0x0001

#define F_ISNS_SRV_SEC_BITMAP_IKE_IPSEC   0x0002

#define F_ISNS_SRV_SEC_BITMAP_MAIN_MODE   0x0004

#define F_ISNS_SRV_SEC_BITMAP_AGGRESSIVE  0x0008

#define F_ISNS_SRV_SEC_BITMAP_PFS   0x0010

#define F_ISNS_SRV_SEC_BITMAP_TRASPORT_MODE 0x0020

#define F_ISNS_SRV_SEC_BITMAP_TUNNEL_MODE 0x0040

#define F_ISNS_SRV_SEC_BITMAP_RESERVED    0xFF80

static const true_false_string tfs_fqdn_o = {

  "Override",

  "No override"

};

static const true_false_string tfs_fqdn_e = {

  "Binary encoding",

  "ASCII encoding"

};

static const true_false_string tfs_fqdn_n = {

  "No server updates",

  "Some server updates"

};

static const true_false_string tfs_isns_function_dd_based_auth = {

  "Automatically allowed access",

  "Explicitly performed",

};

static const true_false_string tfs_isns_functions_sec_distrib = {

  "Download from iSNS server",