[    2.366430] ip (294) used greatest stack depth: 12248 bytes left
[   12.821778] mpls_gso: MPLS GSO support
[  851.159224] blackhole_netdev_xmit(): Dropping skb.
[  851.159292] blackhole_netdev_xmit(): Dropping skb.
[  851.159340] blackhole_netdev_xmit(): Dropping skb.
[  851.159389] blackhole_netdev_xmit(): Dropping skb.