[    1.914351] ip (249) used greatest stack depth: 12376 bytes left
[    2.444531] ip (280) used greatest stack depth: 12360 bytes left
[    7.614858] ip (668) used greatest stack depth: 12344 bytes left
[   15.383173] mpls_gso: MPLS GSO support
[ 1125.602659] blackhole_netdev_xmit(): Dropping skb.
[ 1125.602751] blackhole_netdev_xmit(): Dropping skb.
[ 1125.602805] blackhole_netdev_xmit(): Dropping skb.
[ 1125.602851] blackhole_netdev_xmit(): Dropping skb.