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updated comment on IPv4 mapped address. sync with kame.

This commit is contained in:
itojun 2000-06-01 04:26:38 +00:00
parent 156fa3d59c
commit b347bd9b87
1 changed files with 10 additions and 7 deletions
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17
usr.bin/ftp/ftp.1
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@ -1,4 +1,4 @@
.\" $NetBSD: ftp.1,v 1.67 2000/05/31 14:23:58 lukem Exp $
.\" $NetBSD: ftp.1,v 1.68 2000/06/01 04:26:38 itojun Exp $
.\"
.\" Copyright (c) 1996-2000 The NetBSD Foundation, Inc.
.\" All rights reserved.
@ -1985,10 +1985,13 @@ assumes that all IPv4 mapped addresses
IPv6 addresses with a form like
.Li ::ffff:10.1.1.1
.Pc
indicate IPv4 destination.
However, in certain IPv6 network configuration that include SIIT translator,
the assumption is not true.
In such an environment, IPv4 mapped address must be treated as a normal IPv6
destination.
indicate IPv4 destination which can be handled by
.Dv AF_INET
sockets.
However, in certain IPv6 network configuration, the assumption is not true.
In such an environment, IPv4 mapped address must be passed to
.Dv AF_INET6
sockets directly.
For example, if your site uses SIIT translator for IPv6-to-IPv4 translation,
.Nm
is unable to support such an environment.
is unable to support your configuration.