[    2.479740] ip (288) used greatest stack depth: 12272 bytes left
[   14.673802] mpls_gso: MPLS GSO support
[   19.848731] ip (2200) used greatest stack depth: 12248 bytes left
[   20.384401] ip (2254) used greatest stack depth: 12240 bytes left
[  834.771448] blackhole_netdev_xmit(): Dropping skb.
[  834.771516] blackhole_netdev_xmit(): Dropping skb.
[  834.771556] blackhole_netdev_xmit(): Dropping skb.
[  834.771589] blackhole_netdev_xmit(): Dropping skb.