[    1.954832] ip (252) used greatest stack depth: 12328 bytes left
[   14.651063] mpls_gso: MPLS GSO support
[   15.703916] ip (1417) used greatest stack depth: 12192 bytes left
[  901.903770] blackhole_netdev_xmit(): Dropping skb.
[  901.903829] blackhole_netdev_xmit(): Dropping skb.
[  901.903861] blackhole_netdev_xmit(): Dropping skb.
[  901.903894] blackhole_netdev_xmit(): Dropping skb.