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man: extend the DHCPv6-PD example and add a DHCPv4-6RD example

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This commit is contained in:
Yu Watanabe 2022-01-28 05:25:47 +09:00
parent dd802109c6
commit d45798257b
1 changed files with 71 additions and 5 deletions
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76
man/systemd.network.xml
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@ -4410,22 +4410,48 @@ DHCP=yes</programlisting>
</example>
<example>
<title>IPv6 Prefix Delegation</title>
<title>IPv6 Prefix Delegation (DHCPv6 PD)</title>
<programlisting># /etc/systemd/network/55-ipv6-pd-upstream.network
<programlisting># /etc/systemd/network/55-dhcpv6-pd-upstream.network
[Match]
Name=enp1s0
[Network]
DHCP=ipv6</programlisting>
DHCP=ipv6
<programlisting># /etc/systemd/network/56-ipv6-pd-downstream.network
# The below setting is optional, to also assign an address in the delegated prefix
# to the upstream interface. If not necessary, then comment out the line below and
# the [DHCPPrefixDelegation] section.
DHCPPrefixDelegation=yes
# If the upstream network provides Router Advertisement with Managed bit set,
# then comment out the line below and WithoutRA= setting in the [DHCPv6] section.
IPv6AcceptRA=no
[DHCPv6]
WithoutRA=solicit
[DHCPPrefixDelegation]
UplinkInterface=:self
SubnetId=0
Announce=no</programlisting>
<programlisting># /etc/systemd/network/55-dhcpv6-pd-downstream.network
[Match]
Name=enp2s0
[Network]
DHCPPrefixDelegation=yes
IPv6SendRA=yes
DHCPPrefixDelegation=yes</programlisting>
# It is expected that the host is acting as a router. So, usually it is not
# necessary to receive Router Advertisement from other hosts in the downstream network.
IPv6AcceptRA=no
[DHCPPrefixDelegation]
UplinkInterface=enp1s0
SubnetId=1
Announce=yes</programlisting>
<para>This will enable DHCPv6-PD on the interface enp1s0 as an upstream interface where the
DHCPv6 client is running and enp2s0 as a downstream interface where the prefix is delegated to.
@ -4433,6 +4459,46 @@ DHCPPrefixDelegation=yes</programlisting>
</para>
</example>
<example>
<title>IPv6 Prefix Delegation (DHCPv4 6RD)</title>
<programlisting># /etc/systemd/network/55-dhcpv4-6rd-upstream.network
[Match]
Name=enp1s0
[Network]
DHCP=ipv4
# When DHCPv4-6RD is used, the upstream network does not support IPv6.
# Hence, it is not necessary to wait for Router Advertisement, which is enabled by default.
IPv6AcceptRA=no
[DHCPv4]
Use6RD=yes</programlisting>
<programlisting># /etc/systemd/network/55-dhcpv4-6rd-downstream.network
[Match]
Name=enp2s0
[Network]
DHCPPrefixDelegation=yes
IPv6SendRA=yes
# It is expected that the host is acting as a router. So, usually it is not
# necessary to receive Router Advertisement from other hosts in the downstream network.
IPv6AcceptRA=no
[DHCPPrefixDelegation]
UplinkInterface=enp1s0
SubnetId=1
Announce=yes</programlisting>
<para>This will enable DHCPv4-6RD on the interface enp1s0 as an upstream interface where the
DHCPv4 client is running and enp2s0 as a downstream interface where the prefix is delegated to.
The delegated prefixes are distributed by IPv6 Router Advertisement on the downstream network.
</para>
</example>
<example>
<title>A bridge with two enslaved links</title>