ca_tag
if (!xdr_b_utf8string(xdrs, &objp->ca_tag)) {
cp->ca_tag.utf8string_len = 0;
cp->ca_tag.utf8string_val = NULL;
cp->ca_tag.utf8string_len = str->utf8string_len;
cp->ca_tag.utf8string_val = str->utf8string_val;