[    1.701106] ip (260) used greatest stack depth: 12288 bytes left
[    2.132692] ip (294) used greatest stack depth: 12272 bytes left
[   12.060993] mpls_gso: MPLS GSO support
[  680.519076] blackhole_netdev_xmit(): Dropping skb.
[  680.519136] blackhole_netdev_xmit(): Dropping skb.
[  680.519182] blackhole_netdev_xmit(): Dropping skb.
[  680.519215] blackhole_netdev_xmit(): Dropping skb.