[   21.523789] ip (248) used greatest stack depth: 12440 bytes left
[   21.563216] ip (251) used greatest stack depth: 12376 bytes left
[   22.207227] ip (282) used greatest stack depth: 12344 bytes left
[   35.889322] mpls_gso: MPLS GSO support
[  658.157985] ip (24774) used greatest stack depth: 12288 bytes left
[  911.494856] blackhole_netdev_xmit(): Dropping skb.
[  911.494946] blackhole_netdev_xmit(): Dropping skb.
[  911.495003] blackhole_netdev_xmit(): Dropping skb.
[  911.495051] blackhole_netdev_xmit(): Dropping skb.