[    2.177546] ip (259) used greatest stack depth: 12416 bytes left
[    2.809365] ip (291) used greatest stack depth: 12384 bytes left
[   14.179734] ip (1140) used greatest stack depth: 12320 bytes left
[   16.873168] mpls_gso: MPLS GSO support
[  883.546589] blackhole_netdev_xmit(): Dropping skb.
[  883.546705] blackhole_netdev_xmit(): Dropping skb.
[  883.546739] blackhole_netdev_xmit(): Dropping skb.
[  883.546772] blackhole_netdev_xmit(): Dropping skb.