[    8.318179] ip (247) used greatest stack depth: 12376 bytes left
[    9.025787] ip (281) used greatest stack depth: 12360 bytes left
[    9.080521] ip (285) used greatest stack depth: 12344 bytes left
[   23.144459] mpls_gso: MPLS GSO support
[ 1179.541469] blackhole_netdev_xmit(): Dropping skb.
[ 1179.541559] blackhole_netdev_xmit(): Dropping skb.
[ 1179.541601] blackhole_netdev_xmit(): Dropping skb.
[ 1179.541640] blackhole_netdev_xmit(): Dropping skb.