[    2.231619] ip (260) used greatest stack depth: 12288 bytes left
[    2.953874] ip (294) used greatest stack depth: 12272 bytes left
[   11.187423] ip (817) used greatest stack depth: 12248 bytes left
[   17.655869] mpls_gso: MPLS GSO support
[  707.159307] blackhole_netdev_xmit(): Dropping skb.
[  707.159366] blackhole_netdev_xmit(): Dropping skb.
[  707.159398] blackhole_netdev_xmit(): Dropping skb.
[  707.159429] blackhole_netdev_xmit(): Dropping skb.