text: /*
   * Copyright (c) 2000-2016 Apple Inc. All rights reserved.
   *
   * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   *
   * This file contains Original Code and/or Modifications of Original Code
   * as defined in and that are subject to the Apple Public Source License
   * Version 2.0 (the 'License'). You may not use this file except in
   * compliance with the License. The rights granted to you under the License
   * may not be used to create, or enable the creation or redistribution of,
   * unlawful or unlicensed copies of an Apple operating system, or to
   * circumvent, violate, or enable the circumvention or violation of, any
   * terms of an Apple operating system software license agreement.
   *
   * Please obtain a copy of the License at
   * http://www.opensource.apple.com/apsl/ and read it before using this file.
   *
   * The Original Code and all software distributed under the License are
   * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
   * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
   * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
   * Please see the License for the specific language governing rights and
   * limitations under the License.
   *
   * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
   */
  
  /*
   * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. Neither the name of the project nor the names of its contributors
   *    may be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   */
  
  /*
   * Copyright (c) 1985, 1986, 1993
   *	The Regents of the University of California.  All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. All advertising materials mentioning features or use of this software
   *    must display the following acknowledgement:
   *	This product includes software developed by the University of
   *	California, Berkeley and its contributors.
   * 4. Neither the name of the University nor the names of its contributors
   *    may be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   *
   *	@(#)in_var.h	8.1 (Berkeley) 6/10/93
   */
  
  #ifndef _NETINET6_IN6_VAR_H_
  #define	_NETINET6_IN6_VAR_H_
  #include <sys/appleapiopts.h>
  #include <net/net_kev.h>
  
  #include <netinet6/scope6_var.h>
  #include <sys/kern_event.h>
  #include <net/ethernet.h>
  
  /*
   * pltime/vltime are just for future reference (required to implements 2
   * hour rule for hosts).  they should never be modified by nd6_timeout or
   * anywhere else.
   *	userland -> kernel: accept pltime/vltime
   *	kernel -> userland: throw up everything
   *	in kernel: modify preferred/expire only
   */
  struct in6_addrlifetime {
  	time_t ia6t_expire;	/* valid lifetime expiration time */
  	time_t ia6t_preferred;	/* preferred lifetime expiration time */
  	u_int32_t ia6t_vltime;	/* valid lifetime */
  	u_int32_t ia6t_pltime;	/* prefix lifetime */
  };
  
  
  /* control structure to manage address selection policy */
  struct in6_addrpolicy {
  	struct sockaddr_in6 addr; /* prefix address */
  	struct sockaddr_in6 addrmask; /* prefix mask */
  	int preced;		/* precedence */
  	int label;		/* matching label */
  	u_quad_t use;		/* statistics */
  };
  
  /*
   * IPv6 interface statistics, as defined in RFC2465 Ipv6IfStatsEntry (p12).
   */
  struct in6_ifstat {
  	u_quad_t ifs6_in_receive;	/* # of total input datagram */
  	u_quad_t ifs6_in_hdrerr;	/* # of datagrams with invalid hdr */
  	u_quad_t ifs6_in_toobig;	/* # of datagrams exceeded MTU */
  	u_quad_t ifs6_in_noroute;	/* # of datagrams with no route */
  	u_quad_t ifs6_in_addrerr;	/* # of datagrams with invalid dst */
  	u_quad_t ifs6_in_protounknown;	/* # of datagrams with unknown proto */
  					/* NOTE: increment on final dst if */
  	u_quad_t ifs6_in_truncated;	/* # of truncated datagrams */
  	u_quad_t ifs6_in_discard;	/* # of discarded datagrams */
  					/* NOTE: fragment timeout is not here */
  	u_quad_t ifs6_in_deliver;	/* # of datagrams delivered to ULP */
  					/* NOTE: increment on final dst if */
  	u_quad_t ifs6_out_forward;	/* # of datagrams forwarded */
  					/* NOTE: increment on outgoing if */
  	u_quad_t ifs6_out_request;	/* # of outgoing datagrams from ULP */
  					/* NOTE: does not include forwrads */
  	u_quad_t ifs6_out_discard;	/* # of discarded datagrams */
  	u_quad_t ifs6_out_fragok;	/* # of datagrams fragmented */
  	u_quad_t ifs6_out_fragfail;	/* # of datagrams failed on fragment */
  	u_quad_t ifs6_out_fragcreat;	/* # of fragment datagrams */
  					/* NOTE: this is # after fragment */
  	u_quad_t ifs6_reass_reqd;	/* # of incoming fragmented packets */
  					/* NOTE: increment on final dst if */
  	u_quad_t ifs6_reass_ok;		/* # of reassembled packets */
  					/* NOTE: this is # after reass */
  					/* NOTE: increment on final dst if */
  	u_quad_t ifs6_atmfrag_rcvd;	/* # of atomic fragments received */
  	u_quad_t ifs6_reass_fail;	/* # of reass failures */
  					/* NOTE: may not be packet count */
  					/* NOTE: increment on final dst if */
  	u_quad_t ifs6_in_mcast;		/* # of inbound multicast datagrams */
  	u_quad_t ifs6_out_mcast;	/* # of outbound multicast datagrams */
  
  	u_quad_t ifs6_cantfoward_icmp6;	/* # of ICMPv6 packets received for unreachable dest */
  	u_quad_t ifs6_addr_expiry_cnt;	/* # of address expiry events (excluding privacy addresses) */
  	u_quad_t ifs6_pfx_expiry_cnt;	/* # of prefix expiry events */
  	u_quad_t ifs6_defrtr_expiry_cnt;	/* # of default router expiry events */
  };
  
  /*
   * ICMPv6 interface statistics, as defined in RFC2466 Ipv6IfIcmpEntry.
   * XXX: I'm not sure if this file is the right place for this structure...
   */
  struct icmp6_ifstat {
  	/*
  	 * Input statistics
  	 */
  	/* ipv6IfIcmpInMsgs, total # of input messages */
  	u_quad_t ifs6_in_msg;
  	/* ipv6IfIcmpInErrors, # of input error messages */
  	u_quad_t ifs6_in_error;
  	/* ipv6IfIcmpInDestUnreachs, # of input dest unreach errors */
  	u_quad_t ifs6_in_dstunreach;
  	/* ipv6IfIcmpInAdminProhibs, # of input admin. prohibited errs */
  	u_quad_t ifs6_in_adminprohib;
  	/* ipv6IfIcmpInTimeExcds, # of input time exceeded errors */
  	u_quad_t ifs6_in_timeexceed;
  	/* ipv6IfIcmpInParmProblems, # of input parameter problem errors */
  	u_quad_t ifs6_in_paramprob;
  	/* ipv6IfIcmpInPktTooBigs, # of input packet too big errors */
  	u_quad_t ifs6_in_pkttoobig;
  	/* ipv6IfIcmpInEchos, # of input echo requests */
  	u_quad_t ifs6_in_echo;
  	/* ipv6IfIcmpInEchoReplies, # of input echo replies */
  	u_quad_t ifs6_in_echoreply;
  	/* ipv6IfIcmpInRouterSolicits, # of input router solicitations */
  	u_quad_t ifs6_in_routersolicit;
  	/* ipv6IfIcmpInRouterAdvertisements, # of input router advertisements */
  	u_quad_t ifs6_in_routeradvert;
  	/* ipv6IfIcmpInNeighborSolicits, # of input neighbor solicitations */
  	u_quad_t ifs6_in_neighborsolicit;
  	/* ipv6IfIcmpInNeighborAdvertisements, # of input neighbor advs. */
  	u_quad_t ifs6_in_neighboradvert;
  	/* ipv6IfIcmpInRedirects, # of input redirects */
  	u_quad_t ifs6_in_redirect;
  	/* ipv6IfIcmpInGroupMembQueries, # of input MLD queries */
  	u_quad_t ifs6_in_mldquery;
  	/* ipv6IfIcmpInGroupMembResponses, # of input MLD reports */
  	u_quad_t ifs6_in_mldreport;
  	/* ipv6IfIcmpInGroupMembReductions, # of input MLD done */
  	u_quad_t ifs6_in_mlddone;
  
  	/*
  	 * Output statistics. We should solve unresolved routing problem...
  	 */
  	/* ipv6IfIcmpOutMsgs, total # of output messages */
  	u_quad_t ifs6_out_msg;
  	/* ipv6IfIcmpOutErrors, # of output error messages */
  	u_quad_t ifs6_out_error;
  	/* ipv6IfIcmpOutDestUnreachs, # of output dest unreach errors */
  	u_quad_t ifs6_out_dstunreach;
  	/* ipv6IfIcmpOutAdminProhibs, # of output admin. prohibited errs */
  	u_quad_t ifs6_out_adminprohib;
  	/* ipv6IfIcmpOutTimeExcds, # of output time exceeded errors */
  	u_quad_t ifs6_out_timeexceed;
  	/* ipv6IfIcmpOutParmProblems, # of output parameter problem errors */
  	u_quad_t ifs6_out_paramprob;
  	/* ipv6IfIcmpOutPktTooBigs, # of output packet too big errors */
  	u_quad_t ifs6_out_pkttoobig;
  	/* ipv6IfIcmpOutEchos, # of output echo requests */
  	u_quad_t ifs6_out_echo;
  	/* ipv6IfIcmpOutEchoReplies, # of output echo replies */
  	u_quad_t ifs6_out_echoreply;
  	/* ipv6IfIcmpOutRouterSolicits, # of output router solicitations */
  	u_quad_t ifs6_out_routersolicit;
  	/* ipv6IfIcmpOutRouterAdvertisements, # of output router advs. */
  	u_quad_t ifs6_out_routeradvert;
  	/* ipv6IfIcmpOutNeighborSolicits, # of output neighbor solicitations */
  	u_quad_t ifs6_out_neighborsolicit;
  	/* ipv6IfIcmpOutNeighborAdvertisements, # of output neighbor advs. */
  	u_quad_t ifs6_out_neighboradvert;
  	/* ipv6IfIcmpOutRedirects, # of output redirects */
  	u_quad_t ifs6_out_redirect;
  	/* ipv6IfIcmpOutGroupMembQueries, # of output MLD queries */
  	u_quad_t ifs6_out_mldquery;
  	/* ipv6IfIcmpOutGroupMembResponses, # of output MLD reports */
  	u_quad_t ifs6_out_mldreport;
  	/* ipv6IfIcmpOutGroupMembReductions, # of output MLD done */
  	u_quad_t ifs6_out_mlddone;
  };
  
  struct in6_ifreq {
  	char	ifr_name[IFNAMSIZ];
  	union {
  		struct	sockaddr_in6 ifru_addr;
  		struct	sockaddr_in6 ifru_dstaddr;
  		int	ifru_flags;
  		int	ifru_flags6;
  		int	ifru_metric;
  		int	ifru_intval;
  		caddr_t	ifru_data;
  		struct in6_addrlifetime ifru_lifetime;
  		struct in6_ifstat ifru_stat;
  		struct icmp6_ifstat ifru_icmp6stat;
  		u_int32_t ifru_scope_id[SCOPE6_ID_MAX];
  	} ifr_ifru;
  };
  
  struct in6_aliasreq {
  	char	ifra_name[IFNAMSIZ];
  	struct	sockaddr_in6 ifra_addr;
  	struct	sockaddr_in6 ifra_dstaddr;
  	struct	sockaddr_in6 ifra_prefixmask;
  	int	ifra_flags;
  	struct in6_addrlifetime ifra_lifetime;
  };
  
  
  
  /* prefix type macro */
  #define	IN6_PREFIX_ND	1
  #define	IN6_PREFIX_RR	2
  
  /*
   * prefix related flags passed between kernel(NDP related part) and
   * user land command(ifconfig) and daemon(rtadvd).
   */
  struct in6_prflags {
  	struct prf_ra {
  		u_char onlink : 1;
  		u_char autonomous : 1;
  		u_char reserved : 6;
  	} prf_ra;
  	u_char prf_reserved1;
  	u_short prf_reserved2;
  	/* want to put this on 4byte offset */
  	struct prf_rr {
  		u_char decrvalid : 1;
  		u_char decrprefd : 1;
  		u_char reserved : 6;
  	} prf_rr;
  	u_char prf_reserved3;
  	u_short prf_reserved4;
  };
  
  struct  in6_prefixreq {
  	char	ipr_name[IFNAMSIZ];
  	u_char	ipr_origin;
  	u_char	ipr_plen;
  	u_int32_t ipr_vltime;
  	u_int32_t ipr_pltime;
  	struct in6_prflags ipr_flags;
  	struct	sockaddr_in6 ipr_prefix;
  };
  
  #define	PR_ORIG_RA	0
  #define	PR_ORIG_RR	1
  #define	PR_ORIG_STATIC	2
  #define	PR_ORIG_KERNEL	3
  
  #define	ipr_raf_onlink		ipr_flags.prf_ra.onlink
  #define	ipr_raf_auto		ipr_flags.prf_ra.autonomous
  
  #define	ipr_statef_onlink	ipr_flags.prf_state.onlink
  
  #define	ipr_rrf_decrvalid	ipr_flags.prf_rr.decrvalid
  #define	ipr_rrf_decrprefd	ipr_flags.prf_rr.decrprefd
  
  struct in6_rrenumreq {
  	char	irr_name[IFNAMSIZ];
  	u_char	irr_origin;
  	u_char	irr_m_len;	/* match len for matchprefix */
  	u_char	irr_m_minlen;	/* minlen for matching prefix */
  	u_char	irr_m_maxlen;	/* maxlen for matching prefix */
  	u_char	irr_u_uselen;	/* uselen for adding prefix */
  	u_char	irr_u_keeplen;	/* keeplen from matching prefix */
  	struct irr_raflagmask {
  		u_char onlink : 1;
  		u_char autonomous : 1;
  		u_char reserved : 6;
  	} irr_raflagmask;
  	u_int32_t irr_vltime;
  	u_int32_t irr_pltime;
  	struct in6_prflags irr_flags;
  	struct	sockaddr_in6 irr_matchprefix;
  	struct	sockaddr_in6 irr_useprefix;
  };
  
  #define	irr_raf_mask_onlink	irr_raflagmask.onlink
  #define	irr_raf_mask_auto	irr_raflagmask.autonomous
  #define	irr_raf_mask_reserved	irr_raflagmask.reserved
  
  #define	irr_raf_onlink		irr_flags.prf_ra.onlink
  #define	irr_raf_auto		irr_flags.prf_ra.autonomous
  
  #define	irr_statef_onlink	irr_flags.prf_state.onlink
  
  #define	irr_rrf			irr_flags.prf_rr
  #define	irr_rrf_decrvalid	irr_flags.prf_rr.decrvalid
  #define	irr_rrf_decrprefd	irr_flags.prf_rr.decrprefd
  
  /*
   * Event data, inet6 style.
   */
  struct kev_in6_addrlifetime {
  	u_int32_t ia6t_expire;
  	u_int32_t ia6t_preferred;
  	u_int32_t ia6t_vltime;
  	u_int32_t ia6t_pltime;
  };
  
  struct kev_in6_data {
  	struct net_event_data link_data;
  	struct sockaddr_in6 ia_addr;	/* interface address */
  	struct sockaddr_in6 ia_net;	/* network number of interface */
  	struct sockaddr_in6 ia_dstaddr; /* space for destination addr */
  	struct sockaddr_in6 ia_prefixmask; /* prefix mask */
  	u_int32_t ia_plen;		/* prefix length */
  	u_int32_t ia6_flags;		/* address flags from in6_ifaddr */
  	struct kev_in6_addrlifetime ia_lifetime; /* address life info */
  	uint8_t	ia_mac[ETHER_ADDR_LEN];
  };
  
  
  #define	SIOCSIFADDR_IN6		 _IOW('i', 12, struct in6_ifreq)
  #define	SIOCGIFADDR_IN6		_IOWR('i', 33, struct in6_ifreq)
  
  /*
   * SIOCSxxx ioctls should be unused (see comments in in6.c), but
   * we do not shift numbers for binary compatibility.
   */
  #define	SIOCSIFDSTADDR_IN6	_IOW('i', 14, struct in6_ifreq)
  #define	SIOCSIFNETMASK_IN6	_IOW('i', 22, struct in6_ifreq)
  
  #define	SIOCGIFDSTADDR_IN6	_IOWR('i', 34, struct in6_ifreq)
  #define	SIOCGIFNETMASK_IN6	_IOWR('i', 37, struct in6_ifreq)
  
  #define	SIOCDIFADDR_IN6		_IOW('i', 25, struct in6_ifreq)
  #define	SIOCAIFADDR_IN6		_IOW('i', 26, struct in6_aliasreq)
  
  #define	SIOCSIFPHYADDR_IN6	_IOW('i', 62, struct in6_aliasreq)
  #define	SIOCGIFPSRCADDR_IN6	_IOWR('i', 63, struct in6_ifreq)
  #define	SIOCGIFPDSTADDR_IN6	_IOWR('i', 64, struct in6_ifreq)
  #define	SIOCGIFAFLAG_IN6	_IOWR('i', 73, struct in6_ifreq)
  
  #define	SIOCGDRLST_IN6		_IOWR('i', 74, struct in6_drlist)
  
  #define	SIOCGPRLST_IN6		_IOWR('i', 75, struct in6_prlist)
  
  #define	OSIOCGIFINFO_IN6	_IOWR('i', 108, struct in6_ondireq)
  #define	SIOCGIFINFO_IN6		_IOWR('i', 76, struct in6_ondireq)
  #define	SIOCSNDFLUSH_IN6	_IOWR('i', 77, struct in6_ifreq)
  
  #define	SIOCGNBRINFO_IN6	_IOWR('i', 78, struct in6_nbrinfo)
  
  #define	SIOCSPFXFLUSH_IN6	_IOWR('i', 79, struct in6_ifreq)
  #define	SIOCSRTRFLUSH_IN6	_IOWR('i', 80, struct in6_ifreq)
  
  #define	SIOCGIFALIFETIME_IN6	_IOWR('i', 81, struct in6_ifreq)
  #define	SIOCSIFALIFETIME_IN6	_IOWR('i', 82, struct in6_ifreq)
  #define	SIOCGIFSTAT_IN6		_IOWR('i', 83, struct in6_ifreq)
  #define	SIOCGIFSTAT_ICMP6	_IOWR('i', 84, struct in6_ifreq)
  
  #define	SIOCSDEFIFACE_IN6	_IOWR('i', 85, struct in6_ndifreq)
  #define	SIOCGDEFIFACE_IN6	_IOWR('i', 86, struct in6_ndifreq)
  
  #define	SIOCSIFINFO_FLAGS	_IOWR('i', 87, struct in6_ndireq) /* XXX */
  
  /* N.B.: These 3 ioctls are deprecated and won't work */
  #define	SIOCSSCOPE6		_IOW('i', 88, struct in6_ifreq)
  #define	SIOCGSCOPE6		_IOWR('i', 89, struct in6_ifreq)
  #define	SIOCGSCOPE6DEF		_IOWR('i', 90, struct in6_ifreq)
  
  #define	SIOCSIFPREFIX_IN6	_IOW('i', 100, struct in6_prefixreq) /* set */
  #define	SIOCGIFPREFIX_IN6	_IOWR('i', 101, struct in6_prefixreq) /* get */
  #define	SIOCDIFPREFIX_IN6	_IOW('i', 102, struct in6_prefixreq) /* del */
  #define	SIOCAIFPREFIX_IN6	_IOW('i', 103, struct in6_rrenumreq) /* add */
  
  /* change */
  #define	SIOCCIFPREFIX_IN6	_IOW('i', 104, struct in6_rrenumreq)
  
  /* set global */
  #define	SIOCSGIFPREFIX_IN6	_IOW('i', 105, struct in6_rrenumreq)
  
  /*
   * multicast routing, get s/g pkt cnt, pkt cnt per interface.
   */
  #define	SIOCGETSGCNT_IN6	_IOWR('u', 28, struct sioc_sg_req6)
  #define	SIOCGETMIFCNT_IN6	_IOWR('u', 107, struct sioc_mif_req6)
  
  #define	SIOCAADDRCTL_POLICY	_IOW('u', 108, struct in6_addrpolicy)
  #define	SIOCDADDRCTL_POLICY	_IOW('u', 109, struct in6_addrpolicy)
  
  
  #define	IN6_IFF_ANYCAST		0x0001	/* anycast address */
  #define	IN6_IFF_TENTATIVE	0x0002	/* tentative address */
  #define	IN6_IFF_DUPLICATED	0x0004	/* DAD detected duplicate */
  #define	IN6_IFF_DETACHED	0x0008	/* may be detached from the link */
  #define	IN6_IFF_DEPRECATED	0x0010	/* deprecated address */
  
  /* don't perform DAD on this address (used only at first SIOC* call) */
  #define	IN6_IFF_NODAD		0x0020
  
  #define	IN6_IFF_AUTOCONF	0x0040	/* autoconfigurable address. */
  #define	IN6_IFF_TEMPORARY	0x0080	/* temporary (anonymous) address. */
  #define	IN6_IFF_DYNAMIC		0x0100	/* assigned by DHCPv6 service */
  #define	IN6_IFF_OPTIMISTIC	0x0200	/* optimistic DAD, i.e. RFC 4429 */
  #define	IN6_IFF_SECURED		0x0400	/* cryptographically generated */
  #define	IN6_IFF_CLAT46		0x1000  /* Address reserved for CLAT46 */
  #define	IN6_IFF_NOPFX		0x8000	/* Depreciated. Don't use. */
  
  /* Duplicate Address Detection [DAD] in progress. */
  #define	IN6_IFF_DADPROGRESS	(IN6_IFF_TENTATIVE|IN6_IFF_OPTIMISTIC)
  
  /* do not input/output */
  #define	IN6_IFF_NOTREADY	(IN6_IFF_TENTATIVE|IN6_IFF_DUPLICATED)
  
  /* SLAAC/DHCPv6 address */
  #define IN6_IFF_NOTMANUAL	(IN6_IFF_AUTOCONF|IN6_IFF_DYNAMIC)
  
  
  #endif /* _NETINET6_IN6_VAR_H_ */
  