[    2.041565] ip (247) used greatest stack depth: 12304 bytes left
[    2.664683] ip (281) used greatest stack depth: 12272 bytes left
[   16.097029] ip (1215) used greatest stack depth: 12248 bytes left
[   17.592510] mpls_gso: MPLS GSO support
[ 1243.239663] blackhole_netdev_xmit(): Dropping skb.
[ 1243.239734] blackhole_netdev_xmit(): Dropping skb.
[ 1243.239765] blackhole_netdev_xmit(): Dropping skb.
[ 1243.239796] blackhole_netdev_xmit(): Dropping skb.