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doc: update explanation of IPv6AcceptRA=

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Yu Watanabe 2019-07-16 10:46:27 +09:00 committed by Zbigniew Jędrzejewski-Szmek
parent 0f18289954
commit b3454e1ebc
1 changed files with 9 additions and 9 deletions
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18
man/systemd.network.xml
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@ -654,11 +654,10 @@
</varlistentry>
<varlistentry>
<term><varname>IPv6AcceptRA=</varname></term>
<listitem><para>Takes a boolean. Controls IPv6 Router Advertisement (RA) reception support for the interface.
If true, RAs are accepted; if false, RAs are ignored, independently of the local forwarding state.
If unset, the kernel's default is used, and RAs are accepted only when local forwarding
is disabled for that interface. When RAs are accepted, they may trigger the start of the DHCPv6 client if
the relevant flags are set in the RA data, or if no routers are found on the link.</para>
<listitem><para>Takes a boolean. Controls IPv6 Router Advertisement (RA) reception support
for the interface. If true, RAs are accepted; if false, RAs are ignored, independently of the
local forwarding state. When RAs are accepted, they may trigger the start of the DHCPv6
client if the relevant flags are set in the RA data, or if no routers are found on the link.</para>
<para>Further settings for the IPv6 RA support may be configured in the
<literal>[IPv6AcceptRA]</literal> section, see below.</para>
@ -668,10 +667,11 @@
documentation regarding <literal>accept_ra</literal>, but note that systemd's setting of
<constant>1</constant> (i.e. true) corresponds to kernel's setting of <constant>2</constant>.</para>
<para>Note that if this option is enabled a userspace implementation of the IPv6 RA protocol is
used, and the kernel's own implementation remains disabled, since `networkd` needs to know all
details supplied in the advertisements, and these are not available from the kernel if the kernel's
own implementation is used.</para>
<para>Note that kernel's implementation of the IPv6 RA protocol is always disabled,
regardless of this setting. If this option is enabled, a userspace implementation of the IPv6
RA protocol is used, and the kernel's own implementation remains disabled, since
<command>systemd-networkd</command> needs to know all details supplied in the advertisements,
and these are not available from the kernel if the kernel's own implementation is used.</para>
</listitem>
</varlistentry>
<varlistentry>