The client interface to the Portmapper service for a remote call
    and broadcast service. This routine allows a program to do a
    lookup and call in one step.
    Format
      #include  <rpc/pmap_clnt.h>
      enum clnt_stat  pmap_rmtcall(struct sockaddr_in *addr, u_long
                      prognum, u_long versnum, u_long procnum,
                      xdrproc_t inproc, char * in xdrproc_t outproc,
                      char * out, struct timeval timeout, u_long
                      *port );