diff options
Diffstat (limited to 'man/systemd.net-naming-scheme.xml')
| -rw-r--r-- | man/systemd.net-naming-scheme.xml | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/man/systemd.net-naming-scheme.xml b/man/systemd.net-naming-scheme.xml index 57987f16d7..126be320f6 100644 --- a/man/systemd.net-naming-scheme.xml +++ b/man/systemd.net-naming-scheme.xml @@ -46,6 +46,11 @@ devices based on those properties. See the description of <varname>NamePolicy=</varname> and <varname>MACAddressPolicy=</varname> in <citerefentry><refentrytitle>systemd.link</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para> + + <para>Note that while the concept of network interface naming schemes is primarily relevant in the + context of <filename>systemd-udevd.service</filename>, the + <citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>1</manvolnum></citerefentry> + container manager also takes it into account when naming network interfaces, see below.</para> </refsect1> <refsect1> @@ -329,7 +334,21 @@ <para>Previously two-letter interface type prefix was prepended to <varname>ID_NET_LABEL_ONBOARD=</varname>. This is not done anymore.</para></listitem> </varlistentry> - </variablelist> + + <varlistentry> + <term><constant>v245</constant></term> + + <listitem><para>When + <citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>1</manvolnum></citerefentry> + derives the name for the host side of the network interface created with + <option>--network-veth</option> from the container name it previously simply truncated the result + at 15 characters if longer (since that's the maximum length for network interface names). From now + on, for any interface name that would be longer than 15 characters the last 4 characters are set to + a 24bit hash value of the full interface name. This way network interface name collisions between + multiple similarly named containers (who only differ in container name suffix) should be less + likely (but still possible, since the 24bit hash value is very small).</para></listitem> + </varlistentry> + </variablelist> <para>Note that <constant>latest</constant> may be used to denote the latest scheme known (to this particular version of systemd.</para> @@ -428,7 +447,8 @@ ID_NET_NAME_PATH=encf5f0</programlisting> <para> <citerefentry><refentrytitle>udev</refentrytitle><manvolnum>7</manvolnum></citerefentry>, <citerefentry><refentrytitle>udevadm</refentrytitle><manvolnum>8</manvolnum></citerefentry>, - <ulink url="https://systemd.io/PREDICTABLE_INTERFACE_NAMES">Predictable Network Interface Names</ulink> + <ulink url="https://systemd.io/PREDICTABLE_INTERFACE_NAMES">Predictable Network Interface Names</ulink>, + <citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>1</manvolnum></citerefentry> </para> </refsect1> |