The stash-agent-options statement

         stash-agent-options flag;

         If the stash-agent-options parameter is true for a given client,  the
         server  will  record  the relay agent information options sent during
         the client's initial DHCPREQUEST message when the client was  in  the
         SELECTING  state  and  behave as if those options are included in all
         subsequent DHCPREQUEST messages sent in the  RENEWING  state.    This
         works around a problem with relay agent information options, which is
         that they usually not appear in  DHCPREQUEST  messages  sent  by  the
         client  in  the  RENEWING  state,  because  such messages are unicast
         directly to the server and not sent through a relay agent.