[thirdparty/dhcp.git] / includes / dhcp6.h

/* dhcp6.h

   DHCPv6 Protocol structures... */

/*
 * Copyright (C) 2006-2022 Internet Systems Consortium, Inc. ("ISC")
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 *   Internet Systems Consortium, Inc.
 *   PO Box 360
 *   Newmarket, NH 03857 USA
 *   <info@isc.org>
 *   https://www.isc.org/
 */


/* DHCPv6 Option codes: */

#define D6O_CLIENTID				1 /* RFC3315 */
#define D6O_SERVERID				2
#define D6O_IA_NA				3
#define D6O_IA_TA				4
#define D6O_IAADDR				5
#define D6O_ORO					6
#define D6O_PREFERENCE				7
#define D6O_ELAPSED_TIME			8
#define D6O_RELAY_MSG				9
/* Option code 10 unassigned. */
#define D6O_AUTH				11
#define D6O_UNICAST				12
#define D6O_STATUS_CODE				13
#define D6O_RAPID_COMMIT			14
#define D6O_USER_CLASS				15
#define D6O_VENDOR_CLASS			16
#define D6O_VENDOR_OPTS				17
#define D6O_INTERFACE_ID			18
#define D6O_RECONF_MSG				19
#define D6O_RECONF_ACCEPT			20
#define D6O_SIP_SERVERS_DNS			21 /* RFC3319 */
#define D6O_SIP_SERVERS_ADDR			22 /* RFC3319 */
#define D6O_NAME_SERVERS			23 /* RFC3646 */
#define D6O_DOMAIN_SEARCH			24 /* RFC3646 */
#define D6O_IA_PD				25 /* RFC3633 */
#define D6O_IAPREFIX				26 /* RFC3633 */
#define D6O_NIS_SERVERS				27 /* RFC3898 */
#define D6O_NISP_SERVERS			28 /* RFC3898 */
#define D6O_NIS_DOMAIN_NAME			29 /* RFC3898 */
#define D6O_NISP_DOMAIN_NAME			30 /* RFC3898 */
#define D6O_SNTP_SERVERS			31 /* RFC4075 */
#define D6O_INFORMATION_REFRESH_TIME		32 /* RFC4242 */
#define D6O_BCMCS_SERVER_D			33 /* RFC4280 */
#define D6O_BCMCS_SERVER_A			34 /* RFC4280 */
/* 35 is unassigned */
#define D6O_GEOCONF_CIVIC			36 /* RFC4776 */
#define D6O_REMOTE_ID				37 /* RFC4649 */
#define D6O_SUBSCRIBER_ID			38 /* RFC4580 */
#define D6O_CLIENT_FQDN				39 /* RFC4704 */
#define D6O_PANA_AGENT				40 /* paa-option */
#define D6O_NEW_POSIX_TIMEZONE			41 /* RFC4833 */
#define D6O_NEW_TZDB_TIMEZONE			42 /* RFC4833 */
#define D6O_ERO					43 /* RFC4994 */
#define D6O_LQ_QUERY				44 /* RFC5007 */
#define D6O_CLIENT_DATA				45 /* RFC5007 */
#define D6O_CLT_TIME				46 /* RFC5007 */
#define D6O_LQ_RELAY_DATA			47 /* RFC5007 */
#define D6O_LQ_CLIENT_LINK			48 /* RFC5007 */
#define D6O_MIP6_HNIDF				49 /* RFC6610 */
#define D6O_MIP6_VDINF				50 /* RFC6610 */
#define D6O_V6_LOST				51 /* RFC5223 */
#define D6O_CAPWAP_AC_V6			52 /* RFC5417 */
#define D6O_RELAY_ID				53 /* RFC5460 */
#define D6O_IPV6_ADDRESS_MOS			54 /* RFC5678 */
#define D6O_IPV6_FQDN_MOS			55 /* RFC5678 */
#define D6O_NTP_SERVER				56 /* RFC5908 */
#define D6O_V6_ACCESS_DOMAIN			57 /* RFC5986 */
#define D6O_SIP_UA_CS_LIST			58 /* RFC6011 */
#define D6O_BOOTFILE_URL			59 /* RFC5970 */
#define D6O_BOOTFILE_PARAM			60 /* RFC5970 */
#define D6O_CLIENT_ARCH_TYPE			61 /* RFC5970 */
#define D6O_NII					62 /* RFC5970 */
#define D6O_GEOLOCATION				63 /* RFC6225 */
#define D6O_AFTR_NAME				64 /* RFC6334 */
#define D6O_ERP_LOCAL_DOMAIN_NAME		65 /* RFC6440 */
#define D6O_RSOO				66 /* RFC6422 */
#define D6O_PD_EXCLUDE				67 /* RFC6603 */
#define D6O_VSS					68 /* RFC6607 */
#define D6O_MIP6_IDINF				69 /* RFC6610 */
#define D6O_MIP6_UDINF				70 /* RFC6610 */
#define D6O_MIP6_HNP				71 /* RFC6610 */
#define D6O_MIP6_HAA				72 /* RFC6610 */
#define D6O_MIP6_HAF				73 /* RFC6610 */
#define D6O_RDNSS_SELECTION			74 /* RFC6731 */
#define D6O_KRB_PRINCIPAL_NAME			75 /* RFC6784 */
#define D6O_KRB_REALM_NAME			76 /* RFC6784 */
#define D6O_KRB_DEFAULT_REALM_NAME		77 /* RFC6784 */
#define D6O_KRB_KDC				78 /* RFC6784 */
#define D6O_CLIENT_LINKLAYER_ADDR		79 /* RFC6939 */
#define D6O_LINK_ADDRESS			80 /* RFC6977 */
#define D6O_RADIUS				81 /* RFC7037 */
#define D6O_SOL_MAX_RT				82 /* RFC7083 */
#define D6O_INF_MAX_RT				83 /* RFC7083 */
#define D6O_ADDRSEL				84 /* RFC7078 */
#define D6O_ADDRSEL_TABLE			85 /* RFC7078 */
#define D6O_V6_PCP_SERVER			86 /* RFC7291 */
#define D6O_DHCPV4_MSG				87 /* RFC7341 */
#define D6O_DHCP4_O_DHCP6_SERVER		88 /* RFC7341 */
/* not yet assigned but next free value */
#define D6O_RELAY_SOURCE_PORT			135 /* I-D */

/*
 * Status Codes, from RFC 3315 section 24.4, and RFC 3633, 5007, 5460.
 */
#define STATUS_Success		 0
#define STATUS_UnspecFail	 1
#define STATUS_NoAddrsAvail	 2
#define STATUS_NoBinding	 3
#define STATUS_NotOnLink	 4
#define STATUS_UseMulticast	 5
#define STATUS_NoPrefixAvail	 6
#define STATUS_UnknownQueryType	 7
#define STATUS_MalformedQuery	 8
#define STATUS_NotConfigured	 9
#define STATUS_NotAllowed	10
#define STATUS_QueryTerminated	11

/*
 * DHCPv6 message types, defined in section 5.3 of RFC 3315
 */
#define DHCPV6_SOLICIT		    1
#define DHCPV6_ADVERTISE	    2
#define DHCPV6_REQUEST		    3
#define DHCPV6_CONFIRM		    4
#define DHCPV6_RENEW		    5
#define DHCPV6_REBIND		    6
#define DHCPV6_REPLY		    7
#define DHCPV6_RELEASE		    8
#define DHCPV6_DECLINE		    9
#define DHCPV6_RECONFIGURE	   10
#define DHCPV6_INFORMATION_REQUEST 11
#define DHCPV6_RELAY_FORW	   12
#define DHCPV6_RELAY_REPL	   13
#define DHCPV6_LEASEQUERY	   14	/* RFC5007 */
#define DHCPV6_LEASEQUERY_REPLY	   15	/* RFC5007 */
#define DHCPV6_LEASEQUERY_DONE	   16	/* RFC5460 */
#define DHCPV6_LEASEQUERY_DATA	   17	/* RFC5460 */
#define DHCPV6_RECONFIGURE_REQUEST 18	/* RFC6977 */
#define DHCPV6_RECONFIGURE_REPLY   19	/* RFC6977 */
#define DHCPV6_DHCPV4_QUERY	   20	/* RFC7341 */
#define DHCPV6_DHCPV4_RESPONSE	   21	/* RFC7341 */

extern const char *dhcpv6_type_names[];
extern const int dhcpv6_type_name_max;

/* DUID type definitions (RFC3315 section 9).
 */
#define DUID_LLT	1
#define DUID_EN		2
#define DUID_LL		3
#define DUID_UUID	4	/* RFC6355 */

/* Offsets into IA_*'s where Option spaces commence.  */
#define IA_NA_OFFSET 12 /* IAID, T1, T2, all 4 octets each */
#define IA_TA_OFFSET  4 /* IAID only, 4 octets */
#define IA_PD_OFFSET 12 /* IAID, T1, T2, all 4 octets each */

/* Offset into IAADDR's where Option spaces commence. */
#define IAADDR_OFFSET 24

/* Offset into IAPREFIX's where Option spaces commence. */
#define IAPREFIX_OFFSET 25

/* Offset into LQ_QUERY's where Option spaces commence. */
#define LQ_QUERY_OFFSET 17

/*
 * DHCPv6 well-known multicast addressess, from section 5.1 of RFC 3315
 */
#define All_DHCP_Relay_Agents_and_Servers "FF02::1:2"
#define All_DHCP_Servers "FF05::1:3"

/*
 * DHCPv6 Retransmission Constants (RFC3315 section 5.5, RFC 5007)
 */

#define SOL_MAX_DELAY     1
#define SOL_TIMEOUT       1
#define SOL_MAX_RT      120
#define REQ_TIMEOUT       1
#define REQ_MAX_RT       30
#define REQ_MAX_RC       10
#define CNF_MAX_DELAY     1
#define CNF_TIMEOUT       1
#define CNF_MAX_RT        4
#define CNF_MAX_RD       10
#define REN_TIMEOUT      10
#define REN_MAX_RT      600
#define REB_TIMEOUT      10
#define REB_MAX_RT      600
#define INF_MAX_DELAY     1
#define INF_TIMEOUT       1
#define INF_MAX_RT      120
#define REL_TIMEOUT       1
#define REL_MAX_RC        5
#define DEC_TIMEOUT       1
#define DEC_MAX_RC        5
#define REC_TIMEOUT       2
#define REC_MAX_RC        8
#define HOP_COUNT_LIMIT  32
#define LQ6_TIMEOUT       1
#define LQ6_MAX_RT       10
#define LQ6_MAX_RC        5

/*
 * Normal packet format, defined in section 6 of RFC 3315
 */
struct dhcpv6_packet {
	unsigned char msg_type;
	unsigned char transaction_id[3];
	unsigned char options[FLEXIBLE_ARRAY_MEMBER];
};

/* Offset into DHCPV6 Reply packets where Options spaces commence. */
#define REPLY_OPTIONS_INDEX 4

/*
 * Relay packet format, defined in section 7 of RFC 3315
 */
struct dhcpv6_relay_packet {
	unsigned char msg_type;
	unsigned char hop_count;
	unsigned char link_address[16];
	unsigned char peer_address[16];
	unsigned char options[FLEXIBLE_ARRAY_MEMBER];
};
#define MAX_V6RELAY_HOPS 32

/*
 * DHCPv4-over-DHCPv6 packet format, defined in RFC 4731
 */
struct dhcpv4_over_dhcpv6_packet {
	unsigned char msg_type;
	unsigned char flags[3];
	unsigned char options[FLEXIBLE_ARRAY_MEMBER];
};
#define DHCP4O6_QUERY_UNICAST	128

/* DHCPv4-over-DHCPv6 ISC vendor suboptions */
#define D4O6_INTERFACE		60000
#define D4O6_SRC_ADDRESS	60001

/* Leasequery query-types (RFC 5007, 5460) */

#define LQ6QT_BY_ADDRESS	1
#define LQ6QT_BY_CLIENTID	2
#define LQ6QT_BY_RELAY_ID	3
#define LQ6QT_BY_LINK_ADDRESS	4
#define LQ6QT_BY_REMOTE_ID	5

/*
 * DUID time starts 2000-01-01.
 * This constant is the number of seconds since 1970-01-01,
 * when the Unix epoch began.
 */
#define DUID_TIME_EPOCH 946684800

/* Information-Request Time option (RFC 4242) */

#define IRT_DEFAULT	86400
#define IRT_MINIMUM	600

#define EUI_64_ID_LEN 12  /* 2 for duid-type, 2 for hardware type, 8 for ID */
#define IAID_LEN 4

/* Offsets with iasubopt wire data of data values for IA_NA and TA */
#define IASUBOPT_NA_ADDR_OFFSET		0
#define IASUBOPT_NA_PREF_OFFSET		16
#define IASUBOPT_NA_VALID_OFFSET	20
#define IASUBOPT_NA_LEN			24

/* Offsets with iasubopt wire data of data values for PD */
#define IASUBOPT_PD_PREF_OFFSET		0
#define IASUBOPT_PD_VALID_OFFSET	4
#define IASUBOPT_PD_PREFLEN_OFFSET	8
#define IASUBOPT_PD_PREFIX_OFFSET	9
#define IASUBOPT_PD_LEN			25
Commit	Line	Data
98bd7ca0 DH	1	/* dhcp6.h
	2
	3	DHCPv6 Protocol structures... */
	4
	5	/*
49a7fb58	6	* Copyright (C) 2006-2022 Internet Systems Consortium, Inc. ("ISC")
98bd7ca0	7	*
7512d88b TM	8	* This Source Code Form is subject to the terms of the Mozilla Public
	9	* License, v. 2.0. If a copy of the MPL was not distributed with this
	10	* file, You can obtain one at http://mozilla.org/MPL/2.0/.
98bd7ca0 DH	11	*
	12	* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
	13	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	14	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
	15	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	16	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
	17	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
	18	* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	19	*
	20	* Internet Systems Consortium, Inc.
429a56d7 TM	21	* PO Box 360
429a56d7 TM	22	* Newmarket, NH 03857 USA
98bd7ca0	23	* <info@isc.org>
2c85ac9b	24	* https://www.isc.org/
98bd7ca0 DH	25	*/
	26
	27
	28	/* DHCPv6 Option codes: */
	29
	30	#define D6O_CLIENTID 1 /* RFC3315 */
	31	#define D6O_SERVERID 2
	32	#define D6O_IA_NA 3
	33	#define D6O_IA_TA 4
	34	#define D6O_IAADDR 5
	35	#define D6O_ORO 6
	36	#define D6O_PREFERENCE 7
	37	#define D6O_ELAPSED_TIME 8
	38	#define D6O_RELAY_MSG 9
	39	/* Option code 10 unassigned. */
	40	#define D6O_AUTH 11
	41	#define D6O_UNICAST 12
	42	#define D6O_STATUS_CODE 13
	43	#define D6O_RAPID_COMMIT 14
	44	#define D6O_USER_CLASS 15
	45	#define D6O_VENDOR_CLASS 16
	46	#define D6O_VENDOR_OPTS 17
	47	#define D6O_INTERFACE_ID 18
	48	#define D6O_RECONF_MSG 19
	49	#define D6O_RECONF_ACCEPT 20
	50	#define D6O_SIP_SERVERS_DNS 21 /* RFC3319 */
	51	#define D6O_SIP_SERVERS_ADDR 22 /* RFC3319 */
	52	#define D6O_NAME_SERVERS 23 /* RFC3646 */
	53	#define D6O_DOMAIN_SEARCH 24 /* RFC3646 */
	54	#define D6O_IA_PD 25 /* RFC3633 */
	55	#define D6O_IAPREFIX 26 /* RFC3633 */
	56	#define D6O_NIS_SERVERS 27 /* RFC3898 */
	57	#define D6O_NISP_SERVERS 28 /* RFC3898 */
	58	#define D6O_NIS_DOMAIN_NAME 29 /* RFC3898 */
	59	#define D6O_NISP_DOMAIN_NAME 30 /* RFC3898 */
	60	#define D6O_SNTP_SERVERS 31 /* RFC4075 */
aabfa4de	61	#define D6O_INFORMATION_REFRESH_TIME 32 /* RFC4242 */
98bd7ca0 DH	62	#define D6O_BCMCS_SERVER_D 33 /* RFC4280 */
	63	#define D6O_BCMCS_SERVER_A 34 /* RFC4280 */
	64	/* 35 is unassigned */
aabfa4de FD	65	#define D6O_GEOCONF_CIVIC 36 /* RFC4776 */
aabfa4de FD	66	#define D6O_REMOTE_ID 37 /* RFC4649 */
98bd7ca0	67	#define D6O_SUBSCRIBER_ID 38 /* RFC4580 */
aabfa4de FD	68	#define D6O_CLIENT_FQDN 39 /* RFC4704 */
	69	#define D6O_PANA_AGENT 40 /* paa-option */
	70	#define D6O_NEW_POSIX_TIMEZONE 41 /* RFC4833 */
	71	#define D6O_NEW_TZDB_TIMEZONE 42 /* RFC4833 */
	72	#define D6O_ERO 43 /* RFC4994 */
	73	#define D6O_LQ_QUERY 44 /* RFC5007 */
	74	#define D6O_CLIENT_DATA 45 /* RFC5007 */
	75	#define D6O_CLT_TIME 46 /* RFC5007 */
	76	#define D6O_LQ_RELAY_DATA 47 /* RFC5007 */
	77	#define D6O_LQ_CLIENT_LINK 48 /* RFC5007 */
785c1a51 FD	78	#define D6O_MIP6_HNIDF 49 /* RFC6610 */
	79	#define D6O_MIP6_VDINF 50 /* RFC6610 */
	80	#define D6O_V6_LOST 51 /* RFC5223 */
	81	#define D6O_CAPWAP_AC_V6 52 /* RFC5417 */
	82	#define D6O_RELAY_ID 53 /* RFC5460 */
	83	#define D6O_IPV6_ADDRESS_MOS 54 /* RFC5678 */
	84	#define D6O_IPV6_FQDN_MOS 55 /* RFC5678 */
	85	#define D6O_NTP_SERVER 56 /* RFC5908 */
	86	#define D6O_V6_ACCESS_DOMAIN 57 /* RFC5986 */
	87	#define D6O_SIP_UA_CS_LIST 58 /* RFC6011 */
	88	#define D6O_BOOTFILE_URL 59 /* RFC5970 */
	89	#define D6O_BOOTFILE_PARAM 60 /* RFC5970 */
	90	#define D6O_CLIENT_ARCH_TYPE 61 /* RFC5970 */
	91	#define D6O_NII 62 /* RFC5970 */
	92	#define D6O_GEOLOCATION 63 /* RFC6225 */
	93	#define D6O_AFTR_NAME 64 /* RFC6334 */
	94	#define D6O_ERP_LOCAL_DOMAIN_NAME 65 /* RFC6440 */
	95	#define D6O_RSOO 66 /* RFC6422 */
	96	#define D6O_PD_EXCLUDE 67 /* RFC6603 */
	97	#define D6O_VSS 68 /* RFC6607 */
	98	#define D6O_MIP6_IDINF 69 /* RFC6610 */
	99	#define D6O_MIP6_UDINF 70 /* RFC6610 */
	100	#define D6O_MIP6_HNP 71 /* RFC6610 */
	101	#define D6O_MIP6_HAA 72 /* RFC6610 */
	102	#define D6O_MIP6_HAF 73 /* RFC6610 */
	103	#define D6O_RDNSS_SELECTION 74 /* RFC6731 */
	104	#define D6O_KRB_PRINCIPAL_NAME 75 /* RFC6784 */
	105	#define D6O_KRB_REALM_NAME 76 /* RFC6784 */
	106	#define D6O_KRB_DEFAULT_REALM_NAME 77 /* RFC6784 */
	107	#define D6O_KRB_KDC 78 /* RFC6784 */
62a9eb91	108	#define D6O_CLIENT_LINKLAYER_ADDR 79 /* RFC6939 */
785c1a51 FD	109	#define D6O_LINK_ADDRESS 80 /* RFC6977 */
	110	#define D6O_RADIUS 81 /* RFC7037 */
	111	#define D6O_SOL_MAX_RT 82 /* RFC7083 */
	112	#define D6O_INF_MAX_RT 83 /* RFC7083 */
	113	#define D6O_ADDRSEL 84 /* RFC7078 */
	114	#define D6O_ADDRSEL_TABLE 85 /* RFC7078 */
	115	#define D6O_V6_PCP_SERVER 86 /* RFC7291 */
	116	#define D6O_DHCPV4_MSG 87 /* RFC7341 */
	117	#define D6O_DHCP4_O_DHCP6_SERVER 88 /* RFC7341 */
563f0b8a FD	118	/* not yet assigned but next free value */
563f0b8a FD	119	#define D6O_RELAY_SOURCE_PORT 135 /* I-D */
98bd7ca0	120
bbdac71d	121	/*
785c1a51	122	* Status Codes, from RFC 3315 section 24.4, and RFC 3633, 5007, 5460.
98bd7ca0	123	*/
aabfa4de FD	124	#define STATUS_Success 0
	125	#define STATUS_UnspecFail 1
	126	#define STATUS_NoAddrsAvail 2
	127	#define STATUS_NoBinding 3
bbdac71d TM	128	#define STATUS_NotOnLink 4
bbdac71d TM	129	#define STATUS_UseMulticast 5
aabfa4de FD	130	#define STATUS_NoPrefixAvail 6
	131	#define STATUS_UnknownQueryType 7
	132	#define STATUS_MalformedQuery 8
	133	#define STATUS_NotConfigured 9
	134	#define STATUS_NotAllowed 10
785c1a51	135	#define STATUS_QueryTerminated 11
98bd7ca0	136
bbdac71d TM	137	/*
bbdac71d TM	138	* DHCPv6 message types, defined in section 5.3 of RFC 3315
98bd7ca0 DH	139	*/
	140	#define DHCPV6_SOLICIT 1
	141	#define DHCPV6_ADVERTISE 2
	142	#define DHCPV6_REQUEST 3
	143	#define DHCPV6_CONFIRM 4
	144	#define DHCPV6_RENEW 5
	145	#define DHCPV6_REBIND 6
	146	#define DHCPV6_REPLY 7
	147	#define DHCPV6_RELEASE 8
	148	#define DHCPV6_DECLINE 9
	149	#define DHCPV6_RECONFIGURE 10
	150	#define DHCPV6_INFORMATION_REQUEST 11
	151	#define DHCPV6_RELAY_FORW 12
	152	#define DHCPV6_RELAY_REPL 13
785c1a51 FD	153	#define DHCPV6_LEASEQUERY 14 /* RFC5007 */
	154	#define DHCPV6_LEASEQUERY_REPLY 15 /* RFC5007 */
	155	#define DHCPV6_LEASEQUERY_DONE 16 /* RFC5460 */
	156	#define DHCPV6_LEASEQUERY_DATA 17 /* RFC5460 */
	157	#define DHCPV6_RECONFIGURE_REQUEST 18 /* RFC6977 */
	158	#define DHCPV6_RECONFIGURE_REPLY 19 /* RFC6977 */
	159	#define DHCPV6_DHCPV4_QUERY 20 /* RFC7341 */
	160	#define DHCPV6_DHCPV4_RESPONSE 21 /* RFC7341 */
98bd7ca0	161
06eb8bab	162	extern const char *dhcpv6_type_names[];
98bd7ca0 DH	163	extern const int dhcpv6_type_name_max;
	164
	165	/* DUID type definitions (RFC3315 section 9).
	166	*/
	167	#define DUID_LLT 1
	168	#define DUID_EN 2
	169	#define DUID_LL 3
785c1a51	170	#define DUID_UUID 4 /* RFC6355 */
98bd7ca0	171
8eab95f2 DH	172	/* Offsets into IA_'s where Option spaces commence. /
	173	#define IA_NA_OFFSET 12 /* IAID, T1, T2, all 4 octets each */
	174	#define IA_TA_OFFSET 4 /* IAID only, 4 octets */
aabfa4de	175	#define IA_PD_OFFSET 12 /* IAID, T1, T2, all 4 octets each */
8eab95f2	176
aabfa4de	177	/* Offset into IAADDR's where Option spaces commence. */
5279b8f3 DH	178	#define IAADDR_OFFSET 24
5279b8f3 DH	179
aabfa4de FD	180	/* Offset into IAPREFIX's where Option spaces commence. */
	181	#define IAPREFIX_OFFSET 25
	182
	183	/* Offset into LQ_QUERY's where Option spaces commence. */
	184	#define LQ_QUERY_OFFSET 17
	185
bbdac71d TM	186	/*
bbdac71d TM	187	* DHCPv6 well-known multicast addressess, from section 5.1 of RFC 3315
98bd7ca0 DH	188	*/
	189	#define All_DHCP_Relay_Agents_and_Servers "FF02::1:2"
	190	#define All_DHCP_Servers "FF05::1:3"
	191
	192	/*
37ec5845	193	* DHCPv6 Retransmission Constants (RFC3315 section 5.5, RFC 5007)
98bd7ca0 DH	194	*/
	195
	196	#define SOL_MAX_DELAY 1
	197	#define SOL_TIMEOUT 1
	198	#define SOL_MAX_RT 120
	199	#define REQ_TIMEOUT 1
	200	#define REQ_MAX_RT 30
	201	#define REQ_MAX_RC 10
	202	#define CNF_MAX_DELAY 1
	203	#define CNF_TIMEOUT 1
	204	#define CNF_MAX_RT 4
	205	#define CNF_MAX_RD 10
	206	#define REN_TIMEOUT 10
	207	#define REN_MAX_RT 600
	208	#define REB_TIMEOUT 10
	209	#define REB_MAX_RT 600
	210	#define INF_MAX_DELAY 1
	211	#define INF_TIMEOUT 1
	212	#define INF_MAX_RT 120
	213	#define REL_TIMEOUT 1
	214	#define REL_MAX_RC 5
	215	#define DEC_TIMEOUT 1
	216	#define DEC_MAX_RC 5
	217	#define REC_TIMEOUT 2
	218	#define REC_MAX_RC 8
	219	#define HOP_COUNT_LIMIT 32
37ec5845 FD	220	#define LQ6_TIMEOUT 1
	221	#define LQ6_MAX_RT 10
	222	#define LQ6_MAX_RC 5
98bd7ca0	223
bbdac71d TM	224	/*
bbdac71d TM	225	* Normal packet format, defined in section 6 of RFC 3315
98bd7ca0 DH	226	*/
	227	struct dhcpv6_packet {
	228	unsigned char msg_type;
	229	unsigned char transaction_id[3];
a3528574	230	unsigned char options[FLEXIBLE_ARRAY_MEMBER];
98bd7ca0 DH	231	};
98bd7ca0 DH	232
5279b8f3 DH	233	/* Offset into DHCPV6 Reply packets where Options spaces commence. */
	234	#define REPLY_OPTIONS_INDEX 4
	235
bbdac71d TM	236	/*
bbdac71d TM	237	* Relay packet format, defined in section 7 of RFC 3315
98bd7ca0 DH	238	*/
	239	struct dhcpv6_relay_packet {
	240	unsigned char msg_type;
	241	unsigned char hop_count;
	242	unsigned char link_address[16];
	243	unsigned char peer_address[16];
a3528574	244	unsigned char options[FLEXIBLE_ARRAY_MEMBER];
98bd7ca0	245	};
619304cd	246	#define MAX_V6RELAY_HOPS 32
98bd7ca0	247
785c1a51 FD	248	/*
	249	* DHCPv4-over-DHCPv6 packet format, defined in RFC 4731
	250	*/
	251	struct dhcpv4_over_dhcpv6_packet {
	252	unsigned char msg_type;
	253	unsigned char flags[3];
	254	unsigned char options[FLEXIBLE_ARRAY_MEMBER];
	255	};
	256	#define DHCP4O6_QUERY_UNICAST 128
	257
	258	/* DHCPv4-over-DHCPv6 ISC vendor suboptions */
	259	#define D4O6_INTERFACE 60000
	260	#define D4O6_SRC_ADDRESS 60001
	261
	262	/* Leasequery query-types (RFC 5007, 5460) */
aabfa4de FD	263
	264	#define LQ6QT_BY_ADDRESS 1
	265	#define LQ6QT_BY_CLIENTID 2
785c1a51 FD	266	#define LQ6QT_BY_RELAY_ID 3
	267	#define LQ6QT_BY_LINK_ADDRESS 4
	268	#define LQ6QT_BY_REMOTE_ID 5
7e9f7a1b FD	269
	270	/*
	271	* DUID time starts 2000-01-01.
	272	* This constant is the number of seconds since 1970-01-01,
	273	* when the Unix epoch began.
	274	*/
	275	#define DUID_TIME_EPOCH 946684800
3dbe2246 FD	276
	277	/* Information-Request Time option (RFC 4242) */
	278
	279	#define IRT_DEFAULT 86400
	280	#define IRT_MINIMUM 600
	281
417b7b4a TM	282	#define EUI_64_ID_LEN 12 /* 2 for duid-type, 2 for hardware type, 8 for ID */
	283	#define IAID_LEN 4
	284
c0e9661e	285	/* Offsets with iasubopt wire data of data values for IA_NA and TA */
bbdac71d TM	286	#define IASUBOPT_NA_ADDR_OFFSET 0
	287	#define IASUBOPT_NA_PREF_OFFSET 16
	288	#define IASUBOPT_NA_VALID_OFFSET 20
	289	#define IASUBOPT_NA_LEN 24
c0e9661e TM	290
c0e9661e TM	291	/* Offsets with iasubopt wire data of data values for PD */
bbdac71d TM	292	#define IASUBOPT_PD_PREF_OFFSET 0
	293	#define IASUBOPT_PD_VALID_OFFSET 4
	294	#define IASUBOPT_PD_PREFLEN_OFFSET 8
	295	#define IASUBOPT_PD_PREFIX_OFFSET 9
	296	#define IASUBOPT_PD_LEN 25