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+/* dhcp6.h
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+
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+ DHCPv6 Protocol structures... */
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+
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+/*
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+ * Copyright (c) 2006-2011 by Internet Systems Consortium, Inc. ("ISC")
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+ *
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+ * Permission to use, copy, modify, and distribute this software for any
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+ * purpose with or without fee is hereby granted, provided that the above
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+ * copyright notice and this permission notice appear in all copies.
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+ *
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+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
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+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
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+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
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+ * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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+ *
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+ * Internet Systems Consortium, Inc.
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+ * 950 Charter Street
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+ * Redwood City, CA 94063
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+ * <info@isc.org>
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+ * https://www.isc.org/
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+ */
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+
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+
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+/* DHCPv6 Option codes: */
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+
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+#define D6O_CLIENTID 1 /* RFC3315 */
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+#define D6O_SERVERID 2
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+#define D6O_IA_NA 3
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+#define D6O_IA_TA 4
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+#define D6O_IAADDR 5
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+#define D6O_ORO 6
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+#define D6O_PREFERENCE 7
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+#define D6O_ELAPSED_TIME 8
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+#define D6O_RELAY_MSG 9
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+/* Option code 10 unassigned. */
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+#define D6O_AUTH 11
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+#define D6O_UNICAST 12
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+#define D6O_STATUS_CODE 13
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+#define D6O_RAPID_COMMIT 14
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+#define D6O_USER_CLASS 15
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+#define D6O_VENDOR_CLASS 16
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+#define D6O_VENDOR_OPTS 17
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+#define D6O_INTERFACE_ID 18
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+#define D6O_RECONF_MSG 19
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+#define D6O_RECONF_ACCEPT 20
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+#define D6O_SIP_SERVERS_DNS 21 /* RFC3319 */
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+#define D6O_SIP_SERVERS_ADDR 22 /* RFC3319 */
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+#define D6O_NAME_SERVERS 23 /* RFC3646 */
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+#define D6O_DOMAIN_SEARCH 24 /* RFC3646 */
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+#define D6O_IA_PD 25 /* RFC3633 */
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+#define D6O_IAPREFIX 26 /* RFC3633 */
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+#define D6O_NIS_SERVERS 27 /* RFC3898 */
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+#define D6O_NISP_SERVERS 28 /* RFC3898 */
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+#define D6O_NIS_DOMAIN_NAME 29 /* RFC3898 */
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+#define D6O_NISP_DOMAIN_NAME 30 /* RFC3898 */
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+#define D6O_SNTP_SERVERS 31 /* RFC4075 */
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+#define D6O_INFORMATION_REFRESH_TIME 32 /* RFC4242 */
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+#define D6O_BCMCS_SERVER_D 33 /* RFC4280 */
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+#define D6O_BCMCS_SERVER_A 34 /* RFC4280 */
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+/* 35 is unassigned */
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+#define D6O_GEOCONF_CIVIC 36 /* RFC4776 */
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+#define D6O_REMOTE_ID 37 /* RFC4649 */
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+#define D6O_SUBSCRIBER_ID 38 /* RFC4580 */
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+#define D6O_CLIENT_FQDN 39 /* RFC4704 */
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+#define D6O_PANA_AGENT 40 /* paa-option */
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+#define D6O_NEW_POSIX_TIMEZONE 41 /* RFC4833 */
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+#define D6O_NEW_TZDB_TIMEZONE 42 /* RFC4833 */
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+#define D6O_ERO 43 /* RFC4994 */
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+#define D6O_LQ_QUERY 44 /* RFC5007 */
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+#define D6O_CLIENT_DATA 45 /* RFC5007 */
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+#define D6O_CLT_TIME 46 /* RFC5007 */
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+#define D6O_LQ_RELAY_DATA 47 /* RFC5007 */
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+#define D6O_LQ_CLIENT_LINK 48 /* RFC5007 */
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+
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+/*
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+ * Status Codes, from RFC 3315 section 24.4, and RFC 3633, 5007.
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+ */
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+#define STATUS_Success 0
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+#define STATUS_UnspecFail 1
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+#define STATUS_NoAddrsAvail 2
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+#define STATUS_NoBinding 3
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+#define STATUS_NotOnLink 4
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+#define STATUS_UseMulticast 5
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+#define STATUS_NoPrefixAvail 6
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+#define STATUS_UnknownQueryType 7
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+#define STATUS_MalformedQuery 8
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+#define STATUS_NotConfigured 9
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+#define STATUS_NotAllowed 10
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+
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+/*
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+ * DHCPv6 message types, defined in section 5.3 of RFC 3315
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+ */
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+#define DHCPV6_SOLICIT 1
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+#define DHCPV6_ADVERTISE 2
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+#define DHCPV6_REQUEST 3
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+#define DHCPV6_CONFIRM 4
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+#define DHCPV6_RENEW 5
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+#define DHCPV6_REBIND 6
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+#define DHCPV6_REPLY 7
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+#define DHCPV6_RELEASE 8
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+#define DHCPV6_DECLINE 9
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+#define DHCPV6_RECONFIGURE 10
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+#define DHCPV6_INFORMATION_REQUEST 11
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+#define DHCPV6_RELAY_FORW 12
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+#define DHCPV6_RELAY_REPL 13
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+#define DHCPV6_LEASEQUERY 14
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+#define DHCPV6_LEASEQUERY_REPLY 15
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+
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+extern const char *dhcpv6_type_names[];
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+extern const int dhcpv6_type_name_max;
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+
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+/* DUID type definitions (RFC3315 section 9).
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+ */
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+#define DUID_LLT 1
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+#define DUID_EN 2
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+#define DUID_LL 3
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+
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+/* Offsets into IA_*'s where Option spaces commence. */
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+#define IA_NA_OFFSET 12 /* IAID, T1, T2, all 4 octets each */
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+#define IA_TA_OFFSET 4 /* IAID only, 4 octets */
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+#define IA_PD_OFFSET 12 /* IAID, T1, T2, all 4 octets each */
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+
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+/* Offset into IAADDR's where Option spaces commence. */
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+#define IAADDR_OFFSET 24
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+
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+/* Offset into IAPREFIX's where Option spaces commence. */
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+#define IAPREFIX_OFFSET 25
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+
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+/* Offset into LQ_QUERY's where Option spaces commence. */
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+#define LQ_QUERY_OFFSET 17
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+
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+/*
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+ * DHCPv6 well-known multicast addressess, from section 5.1 of RFC 3315
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+ */
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+#define All_DHCP_Relay_Agents_and_Servers "FF02::1:2"
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+#define All_DHCP_Servers "FF05::1:3"
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+
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+/*
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+ * DHCPv6 Retransmission Constants (RFC3315 section 5.5, RFC 5007)
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+ */
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+
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+#define SOL_MAX_DELAY 1
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+#define SOL_TIMEOUT 1
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+#define SOL_MAX_RT 120
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+#define REQ_TIMEOUT 1
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+#define REQ_MAX_RT 30
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+#define REQ_MAX_RC 10
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+#define CNF_MAX_DELAY 1
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+#define CNF_TIMEOUT 1
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+#define CNF_MAX_RT 4
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+#define CNF_MAX_RD 10
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+#define REN_TIMEOUT 10
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+#define REN_MAX_RT 600
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+#define REB_TIMEOUT 10
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+#define REB_MAX_RT 600
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+#define INF_MAX_DELAY 1
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+#define INF_TIMEOUT 1
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+#define INF_MAX_RT 120
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+#define REL_TIMEOUT 1
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+#define REL_MAX_RC 5
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+#define DEC_TIMEOUT 1
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+#define DEC_MAX_RC 5
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+#define REC_TIMEOUT 2
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+#define REC_MAX_RC 8
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+#define HOP_COUNT_LIMIT 32
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+#define LQ6_TIMEOUT 1
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+#define LQ6_MAX_RT 10
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+#define LQ6_MAX_RC 5
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+
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+/*
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+ * Normal packet format, defined in section 6 of RFC 3315
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+ */
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+struct dhcpv6_packet {
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+ unsigned char msg_type;
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+ unsigned char transaction_id[3];
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+ unsigned char options[FLEXIBLE_ARRAY_MEMBER];
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+};
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+
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+/* Offset into DHCPV6 Reply packets where Options spaces commence. */
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+#define REPLY_OPTIONS_INDEX 4
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+
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+/*
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+ * Relay packet format, defined in section 7 of RFC 3315
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+ */
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+struct dhcpv6_relay_packet {
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+ unsigned char msg_type;
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+ unsigned char hop_count;
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+ unsigned char link_address[16];
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+ unsigned char peer_address[16];
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+ unsigned char options[FLEXIBLE_ARRAY_MEMBER];
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+};
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+
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+/* Leasequery query-types (RFC 5007) */
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+
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+#define LQ6QT_BY_ADDRESS 1
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+#define LQ6QT_BY_CLIENTID 2
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+
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+/*
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+ * DUID time starts 2000-01-01.
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+ * This constant is the number of seconds since 1970-01-01,
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+ * when the Unix epoch began.
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+ */
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+#define DUID_TIME_EPOCH 946684800
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+
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+/* Information-Request Time option (RFC 4242) */
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+
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+#define IRT_DEFAULT 86400
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+#define IRT_MINIMUM 600
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+
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Tomek Mrugalski