Add description of '-i' option
<arg choice="opt">-c <replaceable>KEY</replaceable></arg>
<arg choice="opt">-s</arg>
<arg choice="opt">-p</arg>
+ <arg choice="opt">-i</arg>
<arg choice="opt">-t <replaceable>state</replaceable></arg>
</cmdsynopsis>
</refsynopsisdiv>
</listitem>
</varlistentry>
+ <varlistentry>
+ <term>
+ <option><optional>-i</optional></option>
+ </term>
+ <listitem>
+ <para>
+ <!--
+ Just print the container's IP addresses.
+ -->
+ コンテナの IP アドレスを表示する.
+ </para>
+ </listitem>
+ </varlistentry>
+
<varlistentry>
<term>
<option><optional>-t <replaceable>state</replaceable></optional></option>