[    3.024324] ip (280) used greatest stack depth: 12360 bytes left
[    9.626930] ip (678) used greatest stack depth: 12344 bytes left
[   17.875521] mpls_gso: MPLS GSO support
[ 1039.564045] blackhole_netdev_xmit(): Dropping skb.
[ 1039.564116] blackhole_netdev_xmit(): Dropping skb.
[ 1039.564163] blackhole_netdev_xmit(): Dropping skb.
[ 1039.564195] blackhole_netdev_xmit(): Dropping skb.