SSH_MSG_USERAUTH_PASSWD_CHANGEREQ

[Markus Friedl <markus%openbsd.org@localhost>]

draft-ietf-secsh-userauth-13.txt says:

   Normally, the server responds to this message with success or
   failure.  However, the server MAY also respond with
   SSH_MSG_USERAUTH_PASSWD_CHANGEREQ.

     byte      SSH_MSG_USERAUTH_PASSWD_CHANGEREQ
     string    prompt (ISO-10646 UTF-8)
     string    language tag (as defined in [RFC1766])

   In this case, the software client SHOULD request a new password from
   the user, and send a new request using the following message.  The
   client may also send this message instead of the normal password
   authentication request without the server asking for it.

Does this mean a client has to send a reply to this message?
or is it ok to ignore the request?