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-rw-r--r--man/os-release.xml17
1 files changed, 17 insertions, 0 deletions
diff --git a/man/os-release.xml b/man/os-release.xml
index 5a0cfd2887..a6d333f278 100644
--- a/man/os-release.xml
+++ b/man/os-release.xml
@@ -318,6 +318,23 @@
</varlistentry>
<varlistentry>
+ <term><varname>DEFAULT_HOSTNAME=</varname></term>
+
+ <listitem><para>A string specifying the hostname if
+ <citerefentry><refentrytitle>hostname</refentrytitle><manvolnum>5</manvolnum></citerefentry> is not
+ present and no other configuration source specifies the hostname. Must be either a single DNS label
+ (a string composed of 7-bit ASCII lower-case characters and no spaces or dots, limited to the format
+ allowed for DNS domain name labels), or a sequence of such labels separated by single dots that forms
+ a valid DNS FQDN. The total length must be at most 64 characters.</para>
+
+ <para>See
+ <citerefentry><refentrytitle>org.freedesktop.hostname1</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ for a description of how
+ <citerefentry><refentrytitle>systemd-hostnamed.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
+ determines the fallback hostname.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
<term><varname>SYSEXT_LEVEL=</varname></term>
<listitem><para>A lower-case string (mostly numeric, no spaces or other characters outside of 0–9,