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diff --git a/net/6to4/files/6to4.html b/net/6to4/files/6to4.html new file mode 100644 index 00000000000..16654733ba0 --- /dev/null +++ b/net/6to4/files/6to4.html @@ -0,0 +1,210 @@ +<html> +<head> + <title> + February 11, 2001 6to4 8 + + </title> + <style type="text/css"> + <!-- + body { margin-left:4%; } + H1 { color: maroon; padding: 4pt; margin-left: -4% } + H2 { color: maroon; padding: 4pt; margin-left: -4% } + H3 { color: maroon; padding: 4pt; margin-left: -4% } + H4 { color: maroon; padding: 4pt; margin-left: -4% } + H5 { color: maroon; padding: 4pt; margin-left: -4% } + --> + </style> +</head> +<body bgcolor="#FFFFFF" text="#000000"> + <h3> + NAME + </h3> +<b>6to4</b> +- setup automatic 6to4 IPv6 tunnelling + <h3> + SYNOPSIS + </h3> +<b>6to4</b> +[<b></b><b>-vn</b>] +<i></i><i>command</i> + <h3> + DESCRIPTION + </h3> +The +<b>6to4</b> +script can be used to setup IPv6 on your home machine and +network for exploring IPv6 without any registrations. 6to4 is a +mechanism by which your IPv6 address(es) are derived from an assigned +IPv4 address, and which involves automatic tunnelling to one or more +remove 6to4 hubs, which will then forward your v6 packets on the 6bone +etc. Replies are routed back to you over IPv4 via (possibly) other +6to4 capable remote gateways. As such, IPv6-in-IPv4-encapsulated +packets are accepted from all v4-hosts. + <p> +From your (single) IPv4 address, you get a whole IPv6 /48 network, +which allows you to split your network in 2^16 subnets, with 2^64 +hosts each. You need to setup routing for your internal network +properly, help is provided for setting up the border router here. + <p> +This script takes the burden to calculate your IPv6 address from +existing IPv4 address and runs the commands to setup (and tear down) +automatic 6to4 IPv6 tunnelling. In a seperate step, router +advertisement for the inside network can be started and stopped. + <p> +Possible options are: +<dl compact> +<p><dt><b></b><b>-n</b><dd> +Do not. Only print the commands that would be run, but do not execute +them. +<p><dt><b></b><b>-v</b><dd> +Verbose operation. Print the commands that are about to be run, before +running them. Displays some additional information. +<p><dt><b></b><b>-h</b><dd> +Show usage. +</dl> + <p> +Possible commands are: +<dl compact> +<p><dt><b></b><b>start</b><dd> +Configure 6to4 IPv6. The +<code>stf(4)</code> +interface is configured, and a default route to a remote 6to4 +gateway is established. In addition, the internal +network interface is assigned an address. +<p><dt><b></b><b>stop</b><dd> +Stops 6to4 IPv6. All addresses are removed from the +<code>stf(4)</code> +device, and the default route is removed. +<p><dt><b></b><b>rtadvd-start</b><dd> +Starts router advertizement and IPv6 packet forwarding, +turning the machine into a IPv6 router. +<code>rtadvd(8)</code> +is invoked with a custom config file created under +<code></code><code>/var/run</code>. +Clients need to be told to use the router as +default (IPv6) router, e.g. by adding a static route. +Follow the on-screen instructions to do so. +<p><dt><b></b><b>rtadvd-stop</b><dd> +Stops router advertizement and IPv6 packet forwarding. +<code>rtadvd(8)</code> +is stopped, and the +<code>rtadvd.conf(5)</code> +config file is removed from +<code></code><code>/var/run</code>. +</dl> + <h3> + REQUIREMENTS + </h3> +Besides IPv4 connectivity, you need support for IPv6 and the +<code>stf(4)</code> +device in your kernel. While the GENERIC NetBSD 1.5 kernel does +support IPv6, it does not contain support for the +<code>stf(4)</code> +device. + <p> +Make sure you have the following options in your kernel config file: +<dl compact><dt><dd> +<code> +<pre> +options INET # IP + ICMP + TCP + UDP +options INET6 # IPV6 +pseudo-device stf 1 # 6to4 IPv6 over IPv4 encapsulation +</pre> +</code> +</dl> + <p> +No special values are needed in +<code></code><code>/etc/rc.conf</code>. + <h3> + CONFIGURATION + </h3> +The +<b>6to4</b> +script reads it's configuration from a config file named +<code></code><code>6to4.conf.</code> +The +<code></code><code>6to4.conf</code> +file is in +<code>perl(1)</code> +syntax, and contains several +variables that can be tuned to adjust your setup. Default values +should work for use on a modem dialup. +<dl compact> +<p><dt><b></b><b>out_if</b><dd> +The outbound interface that has a valid IPv4 address +assigned, that can be used to derive the IPv6 +addresses from. Usually +``ppp0'' +for a modem setup, or your ethernet interface if you have +IPv4 connectivity via LAN. This +can't be empty, and is assigned the IPv6 address +2002:x:x:v6_net:hostbits6, see below. +<p><dt><b></b><b>in_if</b><dd> +The inside interface. If non-empty, this interface is +assigned the IPv6 address +2002:x:x:v6_innernet:hostbits6, see below. +This is only useful on machines that +have more than one network interfaces, e.g. with a modem and a +local ethernet. +<p><dt><b></b><b>v6_net</b><dd> +The subnet address you want to use on the address of +your outbound interface. Defaults to +``1''. +<p><dt><b></b><b>v6_innernet</b><dd> +The subnet address you want to use on the address of +your inbound interface. Defaults to +``2''. +<p><dt><b></b><b>hostbits6</b><dd> +The lower 64 bits of both the inbound and outbound interface's +addresses. +<p><dt><b></b><b>peer</b><dd> +Name of the remote 6to4 server that'll take our +IPv6-in-IPv4 encapsulated packets and route them on +via IPv6. Several possible values are given in the +example config file. +</dl> + <h3> + EXAMPLE USAGE + </h3> +The +<b>6to4</b> +script can be run automatically by +<code>pppd(8)</code> +when a connection is made. For this, put the following into +<code></code><code>/etc/ppp/ip-up</code>: +<dl compact><dt><dd> +<code> +<pre> +( /usr/pkg/sbin/6to4 stop + /usr/pkg/sbin/6to4 start ) & +</pre> +</code> +</dl> + <p> +To shut down properly, put this into +<code></code><code>/etc/ppp/ip-down</code>: +<dl compact><dt><dd> +<code> +<pre> +/usr/pkg/sbin/6to4 stop +</pre> +</code> +</dl> + <h3> + SEE ALSO + </h3> +<code>stf(4)</code>, +``6to4 IPv6 Explained'' +at +<code></code><code>http://www.feyrer.de/NetBSD/6to4.html</code>, +NetBSD IPv6 Documentation at +<code></code><code>http://www.netbsd.org/Documentation/network/ipv6/</code>. + <h3> + HISTORY + </h3> +The +<b>6to4</b> +utility and manpage were writte by +Hubert Feyrer <hubert@feyrer.de>. +</font></body> +</html> |