[    1.922878] ip (247) used greatest stack depth: 12376 bytes left
[    2.545214] ip (282) used greatest stack depth: 12344 bytes left
[    9.446371] ip (802) used greatest stack depth: 12160 bytes left
[   15.481639] mpls_gso: MPLS GSO support
[ 1056.885179] blackhole_netdev_xmit(): Dropping skb.
[ 1056.885321] blackhole_netdev_xmit(): Dropping skb.
[ 1056.885364] blackhole_netdev_xmit(): Dropping skb.
[ 1056.885407] blackhole_netdev_xmit(): Dropping skb.