.\" This man page is Copyright (C) 2000 Andi Kleen <ak@muc.de>.
.\" Permission is granted to distribute possibly modified copies
.\" of this page provided the header is included verbatim,
.\" and in case of nontrivial modification author and date
.\" of the modification is added to the header.
.\" $Id: ipv6.7,v 1.4 2001/08/15 18:01:06 hanataka Exp $
.\"
.\" Japanese Version Copyright (c) 2001 NAKANO Takeo all rights reserved.
.\" Translated Sun 18 Feb 2001 by NAKANO Takeo <nakano@apm.seikei.ac.jp>
.\" Updated Wed  4 Apr 2001 by Yuichi SATO <ysato@h4.dion.ne.jp>
.\" Updated Sat Dec 17 09:31:21 JST 2005 by Yuichi SATO <ysato444@yahoo.co.jp>
.\" Updated 2007-05-28, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>, LDP v2.50
.\"
.\"WORD:	flow identifier		ե
.\"WORD:	control message		å
.\"WORD:	incoming 		 (ѥåȡǡ)
.\"WORD:	outgoing 		 (ѥåȡǡ)
.\"WORD:	asynchronous error	Ʊ顼
.\"
.TH IPV6 7 2007-10-14 "Linux" "Linux Programmer's Manual"
.SH ̾
ipv6, PF_INET6 \- Linux  IPv6 ץȥ
.SH 
.B #include <sys/socket.h>
.br
.B #include <netinet/in.h>
.sp
.IB tcp6_socket " = socket(PF_INET6, SOCK_STREAM, 0);"
.br
.IB raw6_socket " = socket(PF_INET6, SOCK_RAW, " protocol ");"
.br
.IB udp6_socket " = socket(PF_INET6, SOCK_DGRAM, " protocol ");"
.SH 
Linux 2.2 ǤϡInternet Protocol, version 6 
ץȤƼƤ롣
 man ڡǤϡLinux ͥ glibc 2.1 Ǥμ˴Ťơ
IPv6 δŪ API ⤹롣
󥿡ե BSD åȥ󥿡եȤˤƤ롣
.BR socket (7)
򻲾ȡ
.PP
IPv6 API ϡۤ
.BR ip (7)
v4 API ȸߴˤʤ뤳ȤܻؤƤ롣
 man ڡǤΤߤ⤹롣
.PP
.B AF_INET6
åȤ򲿤餫Υץ˥Хɤˤϡ
륢ɥ쥹
.I in6_addr
ѿ
.I in6addr_any
饳ԡƤɬפ롣
static ʽ
.B IN6ADDR_ANY_INIT
Ѥ뤳ȤǤŸ롣
ξԤϥͥåȥХȥǤ롣
.PP
IPv6 Υ롼ץХåɥ쥹 (::1)  global ѿ
.I in6addr_loopback
Ǥ롣ˤ
.B IN6ADDR_LOOPBACK_INIT
Ѥ٤Ǥ롣
.PP
IPv4 ³ v6 API ǰȤǤ롣ˤ
v4-mapped-on-v6 ɥ쥹Ѥ롣
Хץ v6  API 򥵥ݡȤǡ
ξΥץȥ򥵥ݡȤǤ롣
 libc Υɥ쥹򰷤ؿˤäƩŪ˽롣
.PP
IPv4  IPv6 ϥݡȶ֤ͭ롣
IPv4 ³ (ޤϥѥå)  IPv6 åȤȡ
ȯɥ쥹 v6 ˥ޥåפ졢³ (ѥå)  v6 ˥ޥåפ롣
.\"nakano: Ǹ it ʤˤؤΤ狼
.SS ɥ쥹Υեޥå
.in +4n
.nf
struct sockaddr_in6 {
    uint16_t        sin6_family;   /* AF_INET6 */
    uint16_t        sin6_port;     /* port number */
    uint32_t        sin6_flowinfo; /* IPv6 flow information */
    struct in6_addr sin6_addr;     /* IPv6 address */
    uint32_t        sin6_scope_id; /* Scope ID (new in 2.4) */
};

struct in6_addr {
    unsigned char   s6_addr[16];   /* IPv6 address */
};
.fi
.in
.sp
.I sin6_family
Ͼ
.B AF_INET6
ꤵ롣
.I sin6_port
ϥץȥݡȤǤ
.RB ( ip (7)

.I sin_port
򻲾)
.I sin6_flowinfo
 IPv6 Υե (flow identifier) Ǥ롣
.I sin6_addr
 128 ӥåȤ IPv6 ɥ쥹Ǥ롣
.I sin6_scope_id
ϥɥ쥹Υפ˰¸ ID Ǥ
( Linux 2.4 Ƴ줿)
Linux ξϡϥ󥯥ץɥ쥹ǤݡȤʤ
ξ
.I sin6_scope_id
ˤϥ󥿡եΥǥåޤޤ뤳Ȥˤʤ
.RB ( netdevice (7)
򻲾)
.PP
IPv6 ϲफΥɥ쥹פ򥵥ݡȤƤ롣
ñΥۥȤ򥢥ɥ쥹뤿 unicast
ۥȤΥ롼פ򥢥ɥ쥹뤿 multicast
ۥȤΥ롼ǺǤ᤯ˤΤ򥢥ɥ쥹뤿 anycast
( Linux ǤϼƤʤ)
IPv4 ۥȤ򥢥ɥ쥹뤿 IPv4-on-IPv6
¾ˤͽѤߤΥɥ쥹פ롣
.PP
IPv6 ǤΥɥ쥹ɽ 2  16 ʿ 16 Ĥʤꡢ
 ':' ϶ڤʸϤǡ'::'  0 ӥåȤʸɽ
üʥɥ쥹Ȥơ롼ץХåɽ ::1
IPv4-mapped-on-IPv6 ɽ ::FFFF::<IPv4 ɥ쥹> 롣
.PP
IPv6 Υݡȶ֤ IPv4 ȶͭƤ롣
.SS åȥץ
IPv6 ϥץȥͭΥåȥץ򤤤ĤݡȤƤ롣

.BR setsockopt (2)
Ǥ
.BR getsockopt (2)
ǼǤ롣
IPv6 Υåȥץ٥
.B IPPROTO_IPV6
Ǥ롣
֡Υե饰ϡ0 ǤꡢʳϿǤ롣
.TP
.B IPV6_ADDRFORM
.B AF_INET6
åȤ̤Υɥ쥹եߥ꡼ΥåȤѤ롣
ߤ
.B AF_INET
ΤߤѹΥɥ쥹եߥ꡼ȤƥݡȤƤ롣
줬ĤΤϡIPv6 ³졢
v4-mapped-on-v6 ɥ쥹˥Хɤ줿˸¤롣

.B AF_INET
äƤؤΥݥ󥿤Ǥ롣
v4-mapped åȤIPv6 API 򰷤ʤץФ
եǥץȤϤ
.TP
.B IPV6_ADD_MEMBERSHIP, IPV6_DROP_MEMBERSHIP
multicast 롼פΥС椹롣

.I struct ipv6_mreq
¤ΤؤΥݥ󥿡
.\" FIXME IPV6_CHECKSUM ϵҤƤʤҤ٤
.\" FIXME IPV6_JOIN_ANYCAST ϵҤƤʤҤ٤
.\" FIXME IPV6_LEAVE_ANYCAST ϵҤƤʤҤ٤
.\" FIXME IPV6_V6ONLY ϵҤƤʤҤ٤
.\" FIXME IPV6_RECVPKTINFO ϵҤƤʤҤ٤
.\" FIXME IPV6_2292PKTINFO ϵҤƤʤҤ٤
.\" FIXME ¾ˤ¿εҤ٤ IPV6_* åȥץ󤬤
.TP
.B IPV6_MTU
ΥåȤФѤ MTU ͤꤹ롣
MTU 礭ϡ
ΥǥХ MTU ޤ (Path MTU Discovery
ǽʤ) ηϩ MTU 礭ʲǤʤФʤʤ
ؤΥݥ󥿡
.TP
.B IPV6_MTU_DISCOVER
ΥåȤǤ Path MTU Discovery 椹롣
ܺ٤
.BR ip (7)

.B IP_MTU_DISCOVER
򻲾ȡ
.TP
.B IPV6_MULTICAST_HOPS
ΥåȤǤ multicast  hop ξͤꤹ롣
ؤΥݥ󥿤Ǥ롣
\-1 ꤹȷϩΥǥեȤѤ뤳Ȥ̣롣
ʳξ 0  255 ϰϤꤹ롣
.TP
.B IPV6_MULTICAST_IF
ΥåȤǤΡ multicast ѥåȤѤǥХꤹ롣

.B SOCK_DGRAM

.B SOCK_RAW
ƥåȤǤΤߵ롣
ϥ󥿡եΥǥå
.RB ( netdevice (7)
򻲾) ؤΥݥ󥿤Ǥ롣
.TP
.B IPV6_MULTICAST_LOOP
åȤʬȤ
multicast ѥåȤƻ뤹뤫ɤ椹롣
ϥ֡ͤؤΥݥ󥿡
.TP
.B IPV6_PKTINFO
ǡˤ
.B IPV6_PKTINFO
å뤫ɤꤹ롣
.B SOCK_DGRAM
åȤޤ
.B SOCK_RAW
åȤФƤΤߵĤ롣
ϥ֡ͤä
.TP
.nh
.B IPV6_RTHDR, IPV6_AUTHHDR, IPV6_DSTOPS, IPV6_HOPOPTS, IPV6_FLOWINFO, IPV6_HOPLIMIT
.hy
ѥåȤΥǡ˳ĥإåޤޤƤΡ
åꤹ롣
.BR IPV6_RTHDR :
routing إå뤫ɤ
.BR IPV6_AUTHHDR :
authentication إå뤫ɤ
.BR IPV6_DSTOPTS :
destination ץ뤫ɤ
.BR IPV6_HOPOPTS :
hop ץ뤫ɤ
.BR IPV6_FLOWINFO :
flow ID ޤ뤫ɤ
.BR IPV6_HOPLIMIT :
ѥåȤ hop Ȥޤ뤫ɤ
åϥåȥץΤΤƱפġ
Τ٤ƤΥإåץϡ
Ŭڤå
.BR sendmsg (2)
Хåե˽񤭤С
ѥåȤˤǤǤ롣
.B SOCK_DGRAM
åȤޤ
.B SOCK_RAW
åȤǤΤߵ롣ϥ֡ͤؤΥݥ󥿡
.TP
.B IPV6_RECVERR
Ʊ顼 (asynchronous error) ץμ椹롣
ܺ٤
.BR ip (7)

.B IP_RECVERR
򻲾ȡ
ϥ֡ͤؤΥݥ󥿡
.TP
.B IPV6_ROUTER_ALERT
ΥåȤǡrouter alert hop-by-hop ץդžѥåȤ
̤ɤ椹롣
.B SOCK_RAW
åȤǤΤߵĤ롣
tap 줿ѥåȤϥͥˤäƤžʤѥåȤ
Τϥ桼ǤǤ롣
 (integer) ؤΥݥ󥿡
˵Ԥ router alert ץͤ򼨤
ץͤǤ router alert ץդѥåȤ
åȤ롣ꤹȡΥåȤؤ
router alert ץդѥåȤԤʤ
.\" FLOWLABEL_MGR, FLOWINFO_SEND
.TP
.B IPV6_UNICAST_HOPS
ΥåȤǤ unicast  hop ξͤꤹ롣
ؤΥݥ󥿤Ǥ롣
\-1 ꤹȷϩΥǥեȤѤ뤳Ȥ̣롣
ʳξ 0  255 ϰϤꤹ롣
.SH С
IPv6 API  libc5 ١ Linux ˼
.I libinet6
ˤĤƤϤǤϵҤƤʤ
餯٤Ȥˤ
.PP
Linux 2.4 Ǥ 64 ӥåȤΥۥȤФ
.I sockaddr_in6
ΥХʥߴݤƤʤ
.I in6_addr
Υ饤Ȥѹ졢ޤ
.I sin6_scope_id
եɤɲä줿Ǥ롣
ͥ륤󥿡եθߴݤƤ뤬
.I sockaddr_in6

.I in6_addr
¾ι¤Τ˴ޤǤ褦ʥץǤ
ݤʤ⤷ʤ
 i386 Τ褦 32 ӥåȤΥۥȤǤˤʤʤ
.PP
.I sin6_flowinfo
եɤ Linux 2.4 о줷
줬Ϥ줿ɥ쥹Ĺ˴ޤޤƤȡ
ͥƩŪϤ졢ɤޤ롣
.\"nakano 狼ʤǤ...
Ĺɥ쥹ХåեϤ
ɥ쥹Ĺå褦ʥץ
ޤưʤ⤷ʤ
.SH 
.I sockaddr_in6
¤Τϥͥå
.I sockaddr
礭
٤ƤΥɥ쥹פ
.I struct sockaddr
˰ǼȲꤷƤץϡ
.I struct sockaddr_storage
Ѥ褦ѹɬפ롣
.SH Х
IPv6 ĥ API ϡߤޤ RFC\ 2292 ˤϼƤʤ
2.2 ͥϼץܴۤ˥ݡȥݡȤƤ뤬
glibc2.1 ˤ IPv6 ץޥ¸ߤƤʤ
.PP
EH  AH إå Ǥ IPSec ΥݡȤ¸ߤʤ
.PP
ե٥ϤޤǤʤˤ⵭ҤƤʤ
.PP
 man ڡϤޤƤʤ
.SH Ϣ
.BR cmsg (3),
.BR ip (7)
.LP
RFC\ 2553: IPv6 BASIC API.
Linux Ϥ RFC ˽򤹤褦ˤƤ롣
.LP
RFC\ 2460: IPv6 specification.