-int interface_send_packet(struct interface *iface, struct iovec *iov, int iov_len);
-int interface_socket_setup(struct interface *iface);
+void interface_shutdown(void);
+int interface_send_packet(struct interface *iface, struct sockaddr *to, struct iovec *iov, int iov_len);
+struct interface* interface_get(const char *name, int v6, int multicast);