filter_next
return filter_next(filter, rrsetnum, rrnum);
rrset=filter_next(filter, &rrsetnum, &rrnum)) {
s=filter_next(flt, &i_rs, &i_rr)) {
s=filter_next(flt, &i_rs, &i_rr)) {
return filter_next(filter, rrsetnum, rrnum);
rrset=filter_next(filter, &rrsetnum, &rrnum)) {
s=filter_next(flt, &i_rs, &i_rr)) {
s=filter_next(flt, &i_rs, &i_rr)) {