man: network: document Use6RD= setting

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Yu Watanabe 2021-12-06 09:20:17 +09:00
parent e49bad0179
commit 31fc1366d6

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@ -861,11 +861,12 @@ Table=1234</programlisting></para>
</varlistentry>
<varlistentry>
<term><varname>DHCPPrefixDelegation=</varname></term>
<listitem><para>Takes a boolean value. When enabled, requests prefixes using a DHCPv6 client
configured on another link. By default, an address within each delegated prefix will be
assigned, and the prefixes will be announced through IPv6 Router Advertisement when
<varname>IPv6SendRA=</varname> is enabled. Such default settings can be configured in
[DHCPPrefixDelegation] section. Defaults to disabled.</para></listitem>
<listitem><para>Takes a boolean value. When enabled, requests subnet prefixes acquired by a
DHCPv6 client, or by a DHCPv4 client through the 6RD option configured on another link. By
default, an address within each delegated prefix will be assigned, and the prefixes will be
announced through IPv6 Router Advertisement when <varname>IPv6SendRA=</varname> is enabled.
Such default settings can be configured in [DHCPPrefixDelegation] section. Defaults to
disabled.</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>IPv6MTUBytes=</varname></term>
@ -1900,6 +1901,15 @@ Table=1234</programlisting></para>
the local system. Defaults to false.</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>Use6RD=</varname></term>
<listitem><para>When true, subnets of the received IPv6 prefix are assigned to downstream
interfaces which enables <varname>DHCPPrefixDelegation=</varname>. See also
<varname>DHCPPrefixDelegation=</varname> in the [Network] section, the [DHCPPrefixDelegation]
section, and <ulink url="https://tools.ietf.org/html/rfc5969">RFC 5969</ulink>. Defaults to
false.</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>FallbackLeaseLifetimeSec=</varname></term>
<listitem>
@ -2114,9 +2124,10 @@ Table=1234</programlisting></para>
<refsect1>
<title>[DHCPPrefixDelegation] Section Options</title>
<para>The [DHCPPrefixDelegation] section configures delegated prefixes assigned by DHCPv6 server.
The settings in this section are used only when <varname>DHCPPrefixDelegation=</varname> setting
is enabled.</para>
<para>The [DHCPPrefixDelegation] section configures subnet prefixes of the delegated prefixes
acquired by a DHCPv6 client, or by a DHCPv4 client through the 6RD option on another interface.
The settings in this section are used only when the <varname>DHCPPrefixDelegation=</varname>
setting in the [Network] section is enabled.</para>
<variablelist class='network-directives'>
<varlistentry>
@ -2127,7 +2138,7 @@ Table=1234</programlisting></para>
interface itself is considered the uplink interface, and
<varname>WithoutRA=solicit</varname> is implied if the setting is not explicitly specified.
When <literal>:auto</literal>, the first link which acquired prefixes to be delegated from
the DHCPv6 server is selected. Defaults to <literal>:auto</literal>.</para>
the DHCPv6 or DHCPv4 server is selected. Defaults to <literal>:auto</literal>.</para>
</listitem>
</varlistentry>
@ -2147,7 +2158,8 @@ Table=1234</programlisting></para>
<listitem>
<para>Takes a boolean. When enabled, and <varname>IPv6SendRA=</varname> in [Network] section
is enabled, the delegated prefixes are distributed through the IPv6 Router Advertisement.
Defaults to yes.</para>
This setting will be ignored when the <varname>DHCPPrefixDelegation=</varname> setting is
enabled on the upstream interface. Defaults to yes.</para>
</listitem>
</varlistentry>