npf_table_getid
unsigned npf_table_getid(nl_table_t *);
tid = npf_table_getid(t);
u_int npf_table_getid(npf_table_t *);
return tl ? npf_table_getid(tl) : (unsigned)-1;
if (npf_table_getid(tl) == tid) {
tid = npf_table_getid(t);