[    2.071323] ip (253) used greatest stack depth: 12616 bytes left
[    2.669351] ip (281) used greatest stack depth: 12344 bytes left
[   16.070416] mpls_gso: MPLS GSO support
[   23.487671] ip (2221) used greatest stack depth: 12032 bytes left
[  884.076186] blackhole_netdev_xmit(): Dropping skb.
[  884.076250] blackhole_netdev_xmit(): Dropping skb.
[  884.076290] blackhole_netdev_xmit(): Dropping skb.
[  884.076324] blackhole_netdev_xmit(): Dropping skb.