[    2.001248] ip (249) used greatest stack depth: 12376 bytes left
[    2.596204] ip (280) used greatest stack depth: 12344 bytes left
[   11.528096] ip (977) used greatest stack depth: 12304 bytes left
[   15.579430] mpls_gso: MPLS GSO support
[ 1242.952909] blackhole_netdev_xmit(): Dropping skb.
[ 1242.952985] blackhole_netdev_xmit(): Dropping skb.
[ 1242.953034] blackhole_netdev_xmit(): Dropping skb.
[ 1242.953063] blackhole_netdev_xmit(): Dropping skb.