Document that people should really use newstyle when possible.

diff --git a/man/nbd-client.8.in.sgml b/man/nbd-client.8.in.sgml
index 8c862a1a02ebd64ab01487576a082e391c7cac3a..d044c6f4ed66f3671d2faa7f666728334a17ccc2 100644 (file)
--- a/man/nbd-client.8.in.sgml
+++ b/man/nbd-client.8.in.sgml
@@ -136,6 +136,9 @@ manpage.1: manpage.sgml
            running at the server.</para>
          <para>This option is required, unless the -N option is
            specified.</para>
+         <para>When a port is specified, nbd-client uses the oldstyle
+           protocol to connect to the server. This version of the
+           protocol is being deprecated.</para>
        </listitem>
       </varlistentry>
       <varlistentry>
@@ -234,8 +237,15 @@ manpage.1: manpage.sgml
        <term><option>-N</option></term>
        <listitem>
          <para>
-           Specifies the name of the export that we want to use. Required if
-           the port is not specified, not allowed in the other case.
+           Specifies the name of the export that we want to use.
+           Required if the port is not specified, not allowed in the
+           other case.
+         </para>
+         <para>
+           When this option is specified, nbd-client uses the newstyle
+           version of the negotiation protocol. This version is much
+           more flexible than the oldstyle negotiation, and should be
+           used for new configurations.
          </para>
        </listitem>
       </varlistentry>