[    1.969192] ip (247) used greatest stack depth: 12376 bytes left
[    2.609619] ip (281) used greatest stack depth: 12344 bytes left
[   15.283523] mpls_gso: MPLS GSO support
[   24.052340] ip (2335) used greatest stack depth: 12328 bytes left
[  803.640309] blackhole_netdev_xmit(): Dropping skb.
[  803.640369] blackhole_netdev_xmit(): Dropping skb.
[  803.640399] blackhole_netdev_xmit(): Dropping skb.
[  803.640430] blackhole_netdev_xmit(): Dropping skb.