[    3.226820] ip (281) used greatest stack depth: 12360 bytes left
[    3.288570] ip (285) used greatest stack depth: 12344 bytes left
[   19.740058] mpls_gso: MPLS GSO support
[  714.162376] blackhole_netdev_xmit(): Dropping skb.
[  714.162452] blackhole_netdev_xmit(): Dropping skb.
[  714.162498] blackhole_netdev_xmit(): Dropping skb.
[  714.162544] blackhole_netdev_xmit(): Dropping skb.
[  901.414101] blackhole_netdev_xmit(): Dropping skb.
[  901.414167] blackhole_netdev_xmit(): Dropping skb.
[  901.414200] blackhole_netdev_xmit(): Dropping skb.
[  901.414232] blackhole_netdev_xmit(): Dropping skb.