static Ndbtuple* filter(Ndb *db, Ndbtuple *t, Ndbtuple *f);
static Ndbtuple* mkfilter(int argc, char **argv);
static int filtercomplete(Ndbtuple *f);
-static Ndbtuple* toipaddr(Ndb *db, Ndbtuple *t);
static int prefixlen(uchar *ip);
static Ndbtuple* subnet(Ndb *db, uchar *net, Ndbtuple *f, int prefix);