void setup_linklocal_scope_id(struct sockaddr_storage *pss);
bool is_local_net_v4(struct in_addr from);
int iface_count(void);
-int iface_count_v4(void);
+int iface_count_v4_nl(void);
const struct in_addr *first_ipv4_iface(void);
struct interface *get_interface(int n);
const struct sockaddr_storage *iface_n_sockaddr_storage(int n);