Function sock_ip_send_aux

unsafe extern "C" fn sock_ip_send_aux(
    sock: *mut sock_ip_t,
    data: *const c_void,
    len: size_t,
    proto: uint8_t,
    remote: *const sock_ip_ep_t,
    aux: *mut sock_ip_aux_tx_t,
) -> ssize_t