[    2.950091] ip (280) used greatest stack depth: 12272 bytes left
[   18.516459] mpls_gso: MPLS GSO support
[  658.387728] ip (24432) used greatest stack depth: 12120 bytes left
[  883.282812] blackhole_netdev_xmit(): Dropping skb.
[  883.282892] blackhole_netdev_xmit(): Dropping skb.
[  883.282947] blackhole_netdev_xmit(): Dropping skb.
[  883.283001] blackhole_netdev_xmit(): Dropping skb.