[    2.048212] ip (293) used greatest stack depth: 12248 bytes left
[    9.149705] ip (993) used greatest stack depth: 12136 bytes left
[   12.125716] mpls_gso: MPLS GSO support
[  744.305551] blackhole_netdev_xmit(): Dropping skb.
[  744.305608] blackhole_netdev_xmit(): Dropping skb.
[  744.305665] blackhole_netdev_xmit(): Dropping skb.
[  744.305701] blackhole_netdev_xmit(): Dropping skb.