ar_vers
if (! xdr_u_int32_t(xdrs, &(ar->ar_vers.low)))
return (xdr_u_int32_t(xdrs, &(ar->ar_vers.high)));
error->re_vers.low = msg->acpted_rply.ar_vers.low;
error->re_vers.high = msg->acpted_rply.ar_vers.high;
rply.acpted_rply.ar_vers.low = (u_int32_t)low_vers;
rply.acpted_rply.ar_vers.high = (u_int32_t)high_vers;