[    2.099595] ip (250) used greatest stack depth: 12376 bytes left
[    2.743068] ip (281) used greatest stack depth: 12344 bytes left
[   16.697719] mpls_gso: MPLS GSO support
[  745.817404] blackhole_netdev_xmit(): Dropping skb.
[  745.817485] blackhole_netdev_xmit(): Dropping skb.
[  745.817532] blackhole_netdev_xmit(): Dropping skb.
[  745.817580] blackhole_netdev_xmit(): Dropping skb.
[  785.108894] blackhole_netdev_xmit(): Dropping skb.
[  785.108950] blackhole_netdev_xmit(): Dropping skb.
[  785.108983] blackhole_netdev_xmit(): Dropping skb.
[  785.109014] blackhole_netdev_xmit(): Dropping skb.
[  957.129213] ip (32395) used greatest stack depth: 12288 bytes left
[ 1132.581347] blackhole_netdev_xmit(): Dropping skb.
[ 1132.581410] blackhole_netdev_xmit(): Dropping skb.
[ 1132.581449] blackhole_netdev_xmit(): Dropping skb.
[ 1132.581480] blackhole_netdev_xmit(): Dropping skb.