int netdev_set_advertisements(struct netdev *, uint32_t advertise);
int netdev_get_in4(const struct netdev *, struct in_addr *);
int netdev_set_in4(struct netdev *, struct in_addr addr, struct in_addr mask);
int netdev_set_advertisements(struct netdev *, uint32_t advertise);
int netdev_get_in4(const struct netdev *, struct in_addr *);
int netdev_set_in4(struct netdev *, struct in_addr addr, struct in_addr mask);