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Document the --unique option. Fixes #2348

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dmiller 2021-08-16 18:02:41 +00:00
parent 264032f8c2
commit d547b004c4
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16
docs/refguide.xml
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@ -349,7 +349,7 @@ you would expect.</para>
<indexterm><primary><option>-R</option></primary></indexterm>
</term>
<listitem>
<para>Tells Nmap to
<para>Tells Nmap to
<emphasis>always</emphasis> do reverse DNS
resolution on the target IP addresses. Normally reverse DNS is
only performed against responsive (online) hosts.</para>
@ -371,6 +371,20 @@ you would expect.</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
<option>--unique</option> (Scan each address only once)
<indexterm><primary><option>--unique</option></primary></indexterm>
</term>
<listitem>
<para>Scan each IP address only once. The default behavior is to scan
each address as many times as it is specified in the target list,
such as when network ranges overlap or different hostnames resolve
to the same address.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
<option>--system-dns</option> (Use system DNS resolver)