[    1.868829] ip (292) used greatest stack depth: 12272 bytes left
[   12.451419] mpls_gso: MPLS GSO support
[  845.494451] blackhole_netdev_xmit(): Dropping skb.
[  845.494515] blackhole_netdev_xmit(): Dropping skb.
[  845.494551] blackhole_netdev_xmit(): Dropping skb.
[  845.494618] blackhole_netdev_xmit(): Dropping skb.