set, and is valid (something other than localhost), then the
transient hostname is not used.</para>
- <para>Note that the pretty hostname has little restrictions on the
- characters used, while the static and transient hostnames are
- limited to the usually accepted characters of Internet domain
- names.</para>
+ <para>Note that the pretty hostname has little restrictions on the characters and length used, while the static and
+ transient hostnames are limited to the usually accepted characters of Internet domain names, and 64 characters at
+ maximum (the latter being a Linux limitation).</para>
<para>The static hostname is stored in
<filename>/etc/hostname</filename>, see