[    1.621759] ip (293) used greatest stack depth: 12272 bytes left
[    1.753214] ip (308) used greatest stack depth: 12128 bytes left
[   10.432359] mpls_gso: MPLS GSO support
[  654.028307] blackhole_netdev_xmit(): Dropping skb.
[  654.028365] blackhole_netdev_xmit(): Dropping skb.
[  654.028405] blackhole_netdev_xmit(): Dropping skb.
[  654.028436] blackhole_netdev_xmit(): Dropping skb.