extern int subnet_compare(const struct subnet_t *a, const struct subnet_t *b);
extern subnet_t *new_subnet(void) __attribute__((__malloc__));
extern void free_subnet(subnet_t *subnet);
extern void init_subnets(void);
extern void exit_subnets(void);
extern int subnet_compare(const struct subnet_t *a, const struct subnet_t *b);
extern subnet_t *new_subnet(void) __attribute__((__malloc__));
extern void free_subnet(subnet_t *subnet);
extern void init_subnets(void);
extern void exit_subnets(void);