<cmdsynopsis>
<command>&dhpackage; </command>
- <arg choice=plain><replaceable>[ip:]port</replaceable</arg>
+ <arg choice=plain><replaceable>[ip@]port</replaceable</arg>
<arg choice=plain><replaceable>filename</replaceable></arg>
<arg><replaceable>size</replaceable></arg>
<arg><option>-r</option></arg>
This file must list the IP-addresses of clients that are allowed
to connect. If it does not exist, all clients are able to connect.
If the file is empty, no clients can connect.</para>
+
+ <para>Note that while the command line allows for specifying an
+ export, the use of this option is deprecated. It is preferred to
+ make use of a configuration file instead, the format of which is
+ defined in nbd-server(5).</para>
</refsect1>
<refsect1>
<title>OPTIONS</title>
<varlistentry>
<term>ip</term>
<listitem>
- <para>The ip address the server should listen on. If
- omitted, 0.0.0.0 (aka "any address") is used.</para>
+ <para>The ip address the server should listen on. This may
+ be an IPv4 address, an IPv6 address, or a hostname. In the
+ latter case, nbd-server will do a hostname lookup for the
+ name specified, and will listen on the first address that is
+ returned. For compatibility with past versions of
+ nbd-server, if an IPv4 address is specified, the @ sign that
+ serves as separator between the address and port may be
+ replaced by a colon.</para>
+ <para>If this parameter is not specified, nbd-server will
+ listen on all local addresses on both IPv4 and IPv6. To
+ limit to IPv4, specify the address as 0.0.0.0; to limit to
+ IPv6, specify it as ::.</para>
</listitem>
</varlistentry>
<varlistentry>
file entirely, either move it away or use the -C option to
point <command>nbd-server</command>(1) to a non-existing or
empty configuration file.</para>
+ <para>Also note that if an empty, incomplete, or invalid
+ configuration file is specified, nbd-server will produce a
+ warning about failure to parse the config file. If the
+ command line contains a fully specified configuration, this
+ warning is harmless and may be ignored.</para>
</listitem>
</varlistentry>
<varlistentry>