diff options
Diffstat (limited to 'en_US.ISO8859-1/htdocs/ipv6/ipv6only.xml')
| -rw-r--r-- | en_US.ISO8859-1/htdocs/ipv6/ipv6only.xml | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/en_US.ISO8859-1/htdocs/ipv6/ipv6only.xml b/en_US.ISO8859-1/htdocs/ipv6/ipv6only.xml new file mode 100644 index 0000000000..2d1b298eec --- /dev/null +++ b/en_US.ISO8859-1/htdocs/ipv6/ipv6only.xml @@ -0,0 +1,169 @@ +<?xml version="1.0" encoding="iso-8859-1"?> +<!DOCTYPE html PUBLIC "-//FreeBSD//DTD XHTML 1.0 Transitional-Based Extension//EN" +"http://www.FreeBSD.org/XML/doc/share/sgml/xhtml10-freebsd.dtd" [ +<!-- Copyright (c) 2011 The FreeBSD Foundation + All rights reserved. + + This documentation was written by Bjoern Zeeb under sponsorship from + the FreeBSD Foundation. + + 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. + + THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. + + $FreeBSD$ +--> +<!ENTITY title "FreeBSD IPv6-only Support"> +<!ENTITY ipv6onlysnap "http://wiki.freebsd.org/IPv6Only"> +<!ENTITY % catnav.ipv6 "INCLUDE"> +<!ENTITY % catnav SYSTEM "ipv6.ent"> +%catnav; +]> +<html xmlns="http://www.w3.org/1999/xhtml"> + <head> + <title>&title;</title> + + <cvs:keyword xmlns:cvs="http://www.FreeBSD.org/XML/CVS">$FreeBSD$</cvs:keyword> + </head> + + <body class="navinclude.developers"> + &catnav; + <h2>IPv4, Dual-Stack and what is "IPv6-only"?</h2> + <p>For multiple decades the Internet has been running on the Internet + Protocol version 4 (IPv4). You may know IPv4 addresses like 192.0.2.1. + IPv6, the Internet Protocol version 6, is the successor to that and has + a larger address space and longer addresses like + 2001:db8:4672:6565:2026:5043:2d42:5344. A dual-stack (DS) system + supports both address families, IPv4 and IPv6. Dual-stack is the + default for &os; releases shipping at this time and has been since 2003. + An IPv6-only system is one that has been configured to use only IPv6 + support; IPv4 support is completely removed from the system. Providing + IPv6-only snapshots of &os; shows that it has no strict internal + dependence on Internet Protocol version 4, and is ready to run in a pure + IPv6 environment. + </p> + + <h2>IPv6-only history</h2> + <p>The IPv6 only kernel has started as a research project in 2008 when &os; + <a href="&base;/doc/en_US.ISO8859-1/books/handbook/jails.html">Jails</a> + gained IPv6 support and it became possible to have jails without IPv4.</p> + + <p>The FreeBSD kernel has long been able to be compiled for dual-stack or + without INET6 support. + It was time for feature parity in that area as well. + As an intermediate step there were efforts to get the kernel compiling + without any IP support at all, which helped to narrow down the + problematic cases.</p> + + <p>As of + <a href="http://svn.freebsd.org/changeset/base/221353">SVN r221353</a> + it is now possible to compile the kernel without INET but with INET6 + support. + </p> + + <h2>How can I get a system without INET support?</h2> + <p>There are two ways to get this:</p> + <ul> + <li>The easy way is to download an IPv6-only snapshot we provide and + test that put. See the <a href="&ipv6onlysnap;">IPv6-only</a> wiki + page for the latest snapshot builds and download links.</li> + <li>Alternatively you can install any FreeBSD HEAD (9.x or later) as of + May 2nd 2011 or later and compile your own kernel. See the + <a href ="&base;/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html"> + Handbook</a> for how to do this.</li> + </ul> + + <h2>Doing IPv6-only when the world tries to get to dual-stack?</h2> + <p>In a time where you hear numbers that about 4% of end users could + actually successfully access IPv6-only services it may indeed sound + strange. The BSD network stack however was used as a reference + implementation for the first time of TCP/IP and again was for IPv6 and + there are some parts of the world already that are limited to IPv6-only. + Over time, as IPv6 deployment proceeds, we expect to see a lot more of + this.</p> + + <p>On the other hand having the IPv4 fall back option of dual-stack hides + a lot of IPv6 errors and omissions. Supposedly IPv6-ready software + breaks when running without IPv4. We want to help early in the process + to catch and fix these problems and want to encourage other software + developers to do the same. FreeBSD is used in embedded device and + targeting servers while at the same time people build desktop systems + with it. This entirety allows us to provide a turnkey solution, an + ideal platform for thorough testing. + </p> + + <h2>FAQ</h2> + + <h3>Do you have a sample kernel configuration for me?</h3> + <p>Yes we do. It is as simple as: + </p> + <pre> +include GENERIC +ident GENERIC-IPV6ONLY +makeoptions MKMODULESENV+="WITHOUT_INET_SUPPORT=" +nooptions INET +nodevice gre + </pre> + + <h3>I am not doing kernels but desktop applications. What about me?</h3> + <p> + &os; ships with a lot of applications running fine on command line. + If you prefer to test on a preconfigured graphical desktop, + <a href="http://www.pcbsd.org/">PC-BSD</a>, a &os; derived desktop + distribution is providing IPv6-only snapshots as well. + </p> + + <h3>Is this limited to &os;?</h3> + <p>No. + While we provide the kernel and parts of user space for you to start + with, a lot of open sources and commercial software running on a + <span class="TRADEMARK">UNIX</span>® or + <span class="TRADEMARK">UNIX</span>®-like operating system + (e.g. <span class="TRADEMARK">®Linux</span>) should be able to + compile and run on FreeBSD with minimal efforts. Also see the next + question. + </p> + + <h3>Does everything just work on IPv6-only in &os;</h3> + <p>While are doing our best, some things are not yet working without + IPv4. Very few parts of the kernel still depend on IPv4 and we are + working on these. In user space you can find three different categories: + </p> + <ol> + <li>Software that is maintained as &os; base. We are actively working + on these as we find problems. Patches from the community are always + welcome.</li> + <li>Software that is shipped with &os; base but imported from a 3rd + party project. We are trying our best to get any problems solved and + are working with upstream vendors.<br/> + If you are part of such a project you may want to test on IPv6-only + yourself to be really IPv6-ready with your next release! Try our + snapshots.</li> + <li>Software that is part of &os; <a href="&base;/ports/">ports</a> + or any other open source or commercial software running on &os;. + We will lend a hand if needed and possible but are hoping for the + community to make best use of our snapshots and improve the overall + IPv6 readiness of software.</li> + </ol> + + <!-- should we provide bsdinstall sample information? --> + + </body> +</html> |