[ 6430.508910][    C3] secure_seq: tcp isn: 3884801738
[ 6479.279699][T24088] blackhole_netdev_xmit(): Dropping skb.
[ 6479.280208][T24088] dev_queue_xmit() returned NET_XMIT_SUCCESS
[ 6479.498787][T24089] test_blackholedev module terminating.