;Name Number Length Meaning dhcp_pad_option = 0 ; 0 None dhcp_end_option = 255 ; 0 None dhcp_subnet_mask = 1 ; 4 Subnet Mask Value dhcp_time_offset = 2 ; 4 Time Offset in Seconds from UTC dhcp_router = 3 ; N×4 Router addresses dhcp_time_server = 4 ; N×4 Timeserver addresses dhcp_name_server = 5 ; N×4 IEN-116 Server addresses dhcp_domain_server = 6 ; N×4 DNS Server addresses dhcp_log_server = 7 ; N×4 Logging Server addresses dhcp_quotes_server = 8 ; N×4 Quotes Server addresses dhcp_lpr_server = 9 ; N×4 Printer Server addresses dhcp_impress_server = 10 ; N×4 Impress Server addresses dhcp_rlp_server = 11 ; N×4 N RLP Server addresses dhcp_hostname = 12 ; N Hostname string dhcp_boot_file_size = 13 ; 2 Size of boot file in 512-octet blocks dhcp_merit_dump_file = 14 ; N Client to dump and name the file to dump it to dhcp_domain_name = 15 ; N The DNS domain name of the client dhcp_swap_server = 16 ; 4 Swap Server address dhcp_root_path = 17 ; N Path name for root disk dhcp_extension_file = 18 ; N Path name for more BOOTP info ;IP Layer Parameters per Host dhcp_forward = 19 ; 1 Enable/Disable IP Forwarding dhcp_srcrte = 20 ; 1 Enable/Disable Non-Local Source Routing dhcp_policy = 21 ; N×8 Non-Local Source Routing Policy Filters dhcp_mag_dg_assembly = 22 ; 2 Max Datagram Reassembly Size dhcp_default_ip_tll = 23 ; 1 Default IP Time to Live dhcp_mtu_timeout = 24 ; 4 Path MTU Aging Timeout dhcp_mtu_plateau = 25 ; N×2 Path MTU Plateau Table ;IP Layer Parameters per Interface dhcp_mtu_interface = 26 ; 2 Interface MTU Size dhcp_mtu_subnet = 27 ; 1 All Subnets are Local dhcp_broadcast_address = 28 ; 4 Broadcast Address dhcp_mask_discovery = 29 ; 1 Perform Mask Discovery dhcp_mask_supplier = 30 ; 1 Provide Mask to Others dhcp_router_discovery = 31 ; 1 Perform Router Discovery dhcp_router_request = 32 ; 4 Router Solicitation Address dhcp_static_route = 33 ; N×8 Static Routing Table ;Link Layer Parameters per Interface dhcp_trailers = 34 ; 1 Trailer Encapsulation dhcp_arp_timeout = 35 ; 4 ARP Cache Timeout dhcp_ethernet = 36 ; 1 Ethernet Encapsulation ;TCP Parameters dhcp_default_tcp_tll = 37 ; 1 Default TCP Time to Live dhcp_keepalive_time = 38 ; 4 TCP Keepalive Interval dhcp_keepalive_data = 39 ; 1 TCP Keepalive Garbage ;Application and Service Parameters dhcp_nis_domain = 40 ; N NIS Domain Name dhcp_nis_servers = 41 ; N×4 NIS Server Addresses dhcp_ntp_servers = 42 ; N×4 NTP Server Addresses dhcp_vendor_specific = 43 ; N Vendor Specific Information dhcp_netbios_name_srv = 44 ; N×4 NETBIOS Name Servers dhcp_netbios_dist_srv = 45 ; N×4 NETBIOS Datagram Distribution dhcp_netbios_node_type = 46 ; 1 NETBIOS Node Type dhcp_netbios_scope = 47 ; N NETBIOS Scope dhcp_x_window_font = 48 ; N×4 X Window Font Server dhcp_x_window_manager = 49 ; N×4 X Window Display Manager dhcp_nis_domain_name = 64 ; N NIS+ v3 Client Domain Name dhcp_nis_server_addr = 65 ; N×4 NIS+ v3 Server Addresses dhcp_home_agent_addrs = 68 ; N×4 Mobile IP Home Agent Addresses dhcp_smtp_server = 69 ; N×4 Simple Mail Server Addresses dhcp_pop3_server = 70 ; N×4 Post Office Server Addresses dhcp_nntp_server = 71 ; N×4 Network News Server Addresses dhcp_www_server = 72 ; N×4 WWW Server Addresses dhcp_finger_server = 73 ; N×4 Finger Server Addresses dhcp_irc_server = 74 ; N×4 Chat Server Addresses dhcp_streettalk_server = 75 ; N×4 StreetTalk Server Addresses dhcp_stda_server = 76 ; N×4 ST Directory Assist. Addresses ;DHCP Extensions dhcp_address_request = 50 ; 4 Requested IP Address dhcp_address_time = 51 ; 4 IP Address Lease Time dhcp_option_overload = 52 ; 1 Overload "sname" or "file" dhcp_msg_type = 53 ; 1 DHCP Message Type dhcp_dhcp_server_id = 54 ; 4 DHCP Server Identification dhcp_parameter_list = 55 ; N Parameter Request List dhcp_dhcp_message = 56 ; N DHCP Error Message dhcp_dhcp_max_msg_size = 57 ; 2 DHCP Maximum Message Size dhcp_renewal_time = 58 ; 4 DHCP Renewal (T1) Time dhcp_rebinding_time = 59 ; 4 DHCP Rebinding (T2) Time dhcp_class_id = 60 ; N Vendor Class Identifier dhcp_client_id = 61 ; N Client Identifier dhcp_server_name = 66 ; N TFTP Server Name dhcp_bootfile_name = 67 ; N Boot File Name ;Newer extensions dhcp_netware_ip_domain = 62 ; N Netware/IP Domain Name dhcp_netware_ip_option = 63 ; N Netware/IP sub Options dhcp_user_class = 77 ; N User Class Information dhcp_directory_agent = 78 ; N directory agent information dhcp_service_scope = 79 ; N service location agent scope dhcp_rapid_commit = 80 ; 0 Rapid Commit dhcp_client_fqdn = 81 ; N Fully Qualified Domain Name dhcp_relay_agent_info = 82 ; N Relay Agent Information, RFC 3046 dhcp_isns = 83 ; N Internet Storage Name Service ; 84 REMOVED/Unassigned dhcp_nds_servers = 85 ; N Novell Directory Services dhcp_nds_tree_name = 86 ; N Novell Directory Services dhcp_nds_conext = 87 ; N Novell Directory Services dhcp_bcmcs = 88 ; Controller Domain Name list dhcp_bcmcs = 89 ; Controller IPv4 address option dhcp_authentication = 90 ; N Authentication ; 91 REMOVED/Unassigned ; 92 REMOVED/Unassigned dhcp_client_system = 93 ; N Client System Architecture dhcp_client_ndi = 94 ; N Client Network Device Interface dhcp_ldap = 95 ; N Lightweight Directory Access Protocol ; 96 REMOVED/Unassigned dhcp_uuid_guid = 97 ; N UUID/GUID-based Client Identifier dchp_user_auth = 98 ; N Open Group's User Authentication ; 99 REMOVED/Unassigned ; 100 REMOVED/Unassigned ; 101 REMOVED/Unassigned ; 102 REMOVED/Unassigned ; 103 REMOVED/Unassigned ; 104 REMOVED/Unassigned ; 105 REMOVED/Unassigned ; 106 REMOVED/Unassigned ; 107 REMOVED/Unassigned ; 108 REMOVED/Unassigned ; 109 REMOVED/Unassigned ; 110 REMOVED/Unassigned ; 111 REMOVED/Unassigned dhcp_netinfo_address = 112 ; N NetInfo Parent Server Address dhcp_netinfo_tag = 113 ; N NetInfo Parent Server Tag dhcp_url = 114 ; N URL ; 115 REMOVED/Unassigned dhcp_auto_config = 116 ; N DHCP Auto-Configuration dhcp_ns_search = 117 ; N Name Service Search dhcp_subnet_selection = 118 ; 4 Subnet Selection Option dhcp_domain_search = 119 ; N DNS domain search list dhcp_sip_servers = 120 ; N SIP Servers DHCP Option dhcp_cl_static_route = 121 ; N Classless Static Route Option dhcp_ccc = 122 ; N CableLabs Client Configuration dhcp_geoconf = 123 ; 16 GeoConf Option dhcp_v_i_vendor_class = 124 ; Vendor-Identifying Vendor Class dhcp_v_i_vendor_spec = 125 ; Vendor-Identifying Vendor-Specific ; 126 REMOVED/Unassigned ; 127 REMOVED/Unassigned dhcp_pxe = 128 ; PXE - undefined (vendor specific) (Tentatively Assigned - 23 June 2005) dhcp_etherboot_sign = 128 ; Etherboot signature. 6 bytes: E4:45:74:68:00:00 dhcp_docsis = 128 ; DOCSIS "full security" server IP address dhcp_tftp_server_ip = 128 ; TFTP Server IP address (for IP Phone software load) dhcp_pxe = 129 ; PXE - undefined (vendor specific) (Tentatively Assigned - 23 June 2005) dhcp_kernel_options = 129 ; Kernel options. Variable length string dhcp_call_server_ip = 129 ; Call Server IP address dhcp_pxe = 130 ; PXE - undefined (vendor specific) (Tentatively Assigned - 23 June 2005) dhcp_ethernet_interface = 130 ; Ethernet interface. Variable length string. dhcp_siscrimination = 130 ; Discrimination string (to identify vendor) dhcp_pxe = 131 ; PXE - undefined (vendor specific) (Tentatively Assigned - 23 June 2005) dhcp_remote_stat_server = 131 ; Remote statistics server IP address dhcp_pxe = 132 ; PXE - undefined (vendor specific) (Tentatively Assigned - 23 June 2005) dhcp_802.1p = 132 ; 802.1P VLAN ID dhcp_pxe = 133 ; PXE - undefined (vendor specific) (Tentatively Assigned - 23 June 2005) dhcp_802.1q = 133 ; 802.1Q L2 Priority dhcp_pxe = 134 ; PXE - undefined (vendor specific) (Tentatively Assigned - 23 June 2005) dhcp_diffserv = 134 ; Diffserv Code Point dhcp_pxe = 135 ; PXE - undefined (vendor specific) (Tentatively Assigned - 23 June 2005) dhcp_http_proxy_psa = 135 ; HTTP Proxy for phone-specific applications ; 136 REMOVED/Unassigned ; 137 REMOVED/Unassigned ; 138 REMOVED/Unassigned ; 139 REMOVED/Unassigned ; 140 REMOVED/Unassigned ; 141 REMOVED/Unassigned ; 142 REMOVED/Unassigned ; 143 REMOVED/Unassigned ; 144 REMOVED/Unassigned ; 145 REMOVED/Unassigned ; 146 REMOVED/Unassigned ; 147 REMOVED/Unassigned ; 148 REMOVED/Unassigned ; 149 REMOVED/Unassigned dhcp_tftp_server_addr = 150 ; TFTP server address (Tentatively Assigned - 23 June 2005) dhcp_etherboot = 150 ; Etherboot dhcp_grub_conf_path = 150 ; GRUB configuration path name ; 151 REMOVED/Unassigned ; 152 REMOVED/Unassigned ; 153 REMOVED/Unassigned ; 154 REMOVED/Unassigned ; 155 REMOVED/Unassigned ; 156 REMOVED/Unassigned ; 157 REMOVED/Unassigned ; 158 REMOVED/Unassigned ; 159 REMOVED/Unassigned ; 160 REMOVED/Unassigned ; 161 REMOVED/Unassigned ; 162 REMOVED/Unassigned ; 163 REMOVED/Unassigned ; 164 REMOVED/Unassigned ; 165 REMOVED/Unassigned ; 166 REMOVED/Unassigned ; 167 REMOVED/Unassigned ; 168 REMOVED/Unassigned ; 169 REMOVED/Unassigned ; 170 REMOVED/Unassigned ; 171 REMOVED/Unassigned ; 172 REMOVED/Unassigned ; 173 REMOVED/Unassigned ; 174 REMOVED/Unassigned dhcp_etherboot = 175 ; Etherboot (Tentatively Assigned - 23 June 2005) dhcp_ip_telephone = 176 ; IP Telephone (Tentatively Assigned - 23 June 2005) dhcp_etherboot = 177 ; Etherboot (Tentatively Assigned - 23 June 2005) dhcp_packetcable = 177 ; PacketCable and CableHome (replaced by 122) ; 178 REMOVED/Unassigned ; 179 REMOVED/Unassigned ; 180 REMOVED/Unassigned ; 181 REMOVED/Unassigned ; 182 REMOVED/Unassigned ; 183 REMOVED/Unassigned ; 184 REMOVED/Unassigned ; 185 REMOVED/Unassigned ; 186 REMOVED/Unassigned ; 187 REMOVED/Unassigned ; 188 REMOVED/Unassigned ; 189 REMOVED/Unassigned ; 190 REMOVED/Unassigned ; 191 REMOVED/Unassigned ; 192 REMOVED/Unassigned ; 193 REMOVED/Unassigned ; 194 REMOVED/Unassigned ; 195 REMOVED/Unassigned ; 196 REMOVED/Unassigned ; 197 REMOVED/Unassigned ; 198 REMOVED/Unassigned ; 199 REMOVED/Unassigned ; 200 REMOVED/Unassigned ; 201 REMOVED/Unassigned ; 202 REMOVED/Unassigned ; 203 REMOVED/Unassigned ; 204 REMOVED/Unassigned ; 205 REMOVED/Unassigned ; 206 REMOVED/Unassigned ; 207 REMOVED/Unassigned dhcp_pxelinux.magic = 208 ; pxelinux.magic (string) = F1:00:74:7E (241.0.116.126) (Tentatively Assigned - 23 June 2005) dhcp_pxelinux.conffile = 209 ; pxelinux.configfile (text) (Tentatively Assigned - 23 June 2005) dhcp_pxelinux.path = 210 ; pxelinux.pathprefix (text) (Tentatively Assigned - 23 June 2005) dhcp_pxelinux.reboot = 211 ; pxelinux.reboottime (unsigned integer 32 bits) (Tentatively Assigned - 23 June 2005) ; 212 REMOVED/Unassigned ; 213 REMOVED/Unassigned ; 214 REMOVED/Unassigned ; 215 REMOVED/Unassigned ; 216 REMOVED/Unassigned ; 217 REMOVED/Unassigned ; 218 REMOVED/Unassigned ; 219 REMOVED/Unassigned dhcp_subnet_aloc = 220 ; Subnet Allocation Option (Tentatively Assigned - 23 June 2005) dhcp_virtual_subnet = 221 ; Virtual Subnet Selection Option (Tentatively Assigned - 23 June 2005) ; 222 REMOVED/Unassigned ; 223 REMOVED/Unassigned