From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Thu, 2 Aug 2018 07:32:42 +0000 (+0900)
Subject: man: mention that Hostname= for DHCP must be a valid DNS domain name
X-Git-Tag: v240~863^2~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=31ee39732705b74c43b2352132e3af205a876c99;p=thirdparty%2Fsystemd.git

man: mention that Hostname= for DHCP must be a valid DNS domain name
---

diff --git a/man/systemd.network.xml b/man/systemd.network.xml
index 8a80b0cf4fe..c3dd8d07a91 100644
--- a/man/systemd.network.xml
+++ b/man/systemd.network.xml
@@ -1194,25 +1194,28 @@
         <varlistentry>
           <term><varname>SendHostname=</varname></term>
           <listitem>
-            <para>When true (the default), the machine's hostname will
-            be sent to the DHCP server.</para>
+            <para>When true (the default), the machine's hostname will be sent to the DHCP server.
+            Note that the machine's hostname must consist only of 7-bit ASCII lower-case characters and
+            no spaces or dots, and be formatted as a valid DNS domain name. Otherwise, the hostname is not
+            send even if this is set to true.</para>
           </listitem>
         </varlistentry>
         <varlistentry>
           <term><varname>UseHostname=</varname></term>
           <listitem>
             <para>When true (the default), the hostname received from
-            the DHCP server will be set as the transient hostname of the system
+            the DHCP server will be set as the transient hostname of the system.
             </para>
           </listitem>
         </varlistentry>
         <varlistentry>
-        <term><varname>Hostname=</varname></term>
-        <listitem>
-          <para>Use this value for the hostname which is sent to the
-          DHCP server, instead of machine's hostname.</para>
-        </listitem>
-      </varlistentry>
+          <term><varname>Hostname=</varname></term>
+          <listitem>
+            <para>Use this value for the hostname which is sent to the DHCP server, instead of machine's hostname.
+            Note that the specified hostname must consist only of 7-bit ASCII lower-case characters and
+            no spaces or dots, and be formatted as a valid DNS domain name.</para>
+          </listitem>
+        </varlistentry>
         <varlistentry>
           <term><varname>UseDomains=</varname></term>
           <listitem>