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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 19:41:07 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 19:41:07 +0000
commit3af6d22bb3850ab2bac67287e3a3d3b0e32868e5 (patch)
tree3ee7a3ec64525911fa865bb984c86d997d855527 /man7/ipv6.7
parentAdding debian version 6.05.01-1. (diff)
downloadmanpages-3af6d22bb3850ab2bac67287e3a3d3b0e32868e5.tar.xz
manpages-3af6d22bb3850ab2bac67287e3a3d3b0e32868e5.zip
Merging upstream version 6.7.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'man7/ipv6.7')
-rw-r--r--man7/ipv6.734
1 files changed, 17 insertions, 17 deletions
diff --git a/man7/ipv6.7 b/man7/ipv6.7
index e6f9d54..18acdc9 100644
--- a/man7/ipv6.7
+++ b/man7/ipv6.7
@@ -78,14 +78,14 @@
.\" commit c4062dfc425e94290ac427a98d6b4721dd2bc91f
.\" Author: Erich E. Hoover <ehoover@mines.edu>
.\"
-.TH ipv6 7 2023-07-30 "Linux man-pages 6.05.01"
+.TH ipv6 7 2023-10-31 "Linux man-pages 6.7"
.SH NAME
ipv6 \- Linux IPv6 protocol implementation
.SH SYNOPSIS
.nf
.B #include <sys/socket.h>
.B #include <netinet/in.h>
-.PP
+.P
.IB tcp6_socket " = socket(AF_INET6, SOCK_STREAM, 0);"
.IB raw6_socket " = socket(AF_INET6, SOCK_RAW, " protocol ");"
.IB udp6_socket " = socket(AF_INET6, SOCK_DGRAM, " protocol ");"
@@ -97,12 +97,12 @@ implemented by the Linux kernel and glibc 2.1.
The interface
is based on the BSD sockets interface; see
.BR socket (7).
-.PP
+.P
The IPv6 API aims to be mostly compatible with the
IPv4 API (see
.BR ip (7)).
Only differences are described in this man page.
-.PP
+.P
To bind an
.B AF_INET6
socket to any process, the local address should be copied from the
@@ -114,21 +114,21 @@ In static initializations,
.B IN6ADDR_ANY_INIT
may also be used, which expands to a constant expression.
Both of them are in network byte order.
-.PP
+.P
The IPv6 loopback address (::1) is available in the global
.I in6addr_loopback
variable.
For initializations,
.B IN6ADDR_LOOPBACK_INIT
should be used.
-.PP
+.P
IPv4 connections can be handled with the v6 API by using the
v4-mapped-on-v6 address type;
thus a program needs to support only this API type to
support both protocols.
This is handled transparently by the address
handling functions in the C library.
-.PP
+.P
IPv4 and IPv6 share the local port space.
When you get an IPv4 connection
or packet to an IPv6 socket,
@@ -149,7 +149,7 @@ struct in6_addr {
};
.EE
.in
-.PP
+.P
.I sin6_family
is always set to
.BR AF_INET6 ;
@@ -169,19 +169,19 @@ Linux supports it only for link-local addresses, in that case
.I sin6_scope_id
contains the interface index (see
.BR netdevice (7))
-.PP
+.P
IPv6 supports several address types: unicast to address a single
host, multicast to address a group of hosts,
anycast to address the nearest member of a group of hosts
(not implemented in Linux), IPv4-on-IPv6 to
address an IPv4 host, and other reserved address types.
-.PP
+.P
The address notation for IPv6 is a group of 8 4-digit hexadecimal
numbers, separated with a \[aq]:\[aq].
\&"::" stands for a string of 0 bits.
Special addresses are ::1 for loopback and ::FFFF:<IPv4 address>
for IPv4-mapped-on-IPv6.
-.PP
+.P
The port space of IPv6 is shared with IPv4.
.SS Socket options
IPv6 supports some protocol-specific socket options that can be set with
@@ -368,7 +368,7 @@ or
into other structures may not be.
This is not
a problem for 32-bit hosts like i386.
-.PP
+.P
The
.I sin6_flowinfo
field is new in Linux 2.4.
@@ -386,7 +386,7 @@ Programs that assume that all address types can be stored safely in a
need to be changed to use
.I struct sockaddr_storage
for that instead.
-.PP
+.P
.BR SOL_IP ,
.BR SOL_IPV6 ,
.BR SOL_ICMPV6 ,
@@ -401,16 +401,16 @@ The IPv6 extended API as in RFC\ 2292 is currently only partly
implemented;
although the 2.2 kernel has near complete support for receiving options,
the macros for generating IPv6 options are missing in glibc 2.1.
-.PP
+.P
IPSec support for EH and AH headers is missing.
-.PP
+.P
Flow label management is not complete and not documented here.
-.PP
+.P
This man page is not complete.
.SH SEE ALSO
.BR cmsg (3),
.BR ip (7)
-.PP
+.P
RFC\ 2553: IPv6 BASIC API;
Linux tries to be compliant to this.
RFC\ 2460: IPv6 specification.