[    1.411239] ip (260) used greatest stack depth: 12832 bytes left
[    1.431602] ip (263) used greatest stack depth: 12280 bytes left
[    1.782217] ip (294) used greatest stack depth: 12248 bytes left
[   10.840948] mpls_gso: MPLS GSO support
[  764.823636] blackhole_netdev_xmit(): Dropping skb.
[  764.823727] blackhole_netdev_xmit(): Dropping skb.
[  764.823789] blackhole_netdev_xmit(): Dropping skb.
[  764.823863] blackhole_netdev_xmit(): Dropping skb.