[    1.620762] ip (261) used greatest stack depth: 12280 bytes left
[    2.007020] ip (292) used greatest stack depth: 12248 bytes left
[   11.939649] mpls_gso: MPLS GSO support
[  845.069147] blackhole_netdev_xmit(): Dropping skb.
[  845.069204] blackhole_netdev_xmit(): Dropping skb.
[  845.069246] blackhole_netdev_xmit(): Dropping skb.
[  845.069289] blackhole_netdev_xmit(): Dropping skb.