{
.suffix = 'a',
.mtu = 1500, /* could be more, but some receivers can't handle it... */
+ .is_ip = 1, /* This is for sending IP and ARP packages */
.rx = rx,
.build_header = build_header,
.prepare_tx = prepare_tx,
.continue_tx = continue_tx,
+ .ack_tx = NULL
};