[    1.660943] ip (259) used greatest stack depth: 12280 bytes left
[    2.125802] ip (293) used greatest stack depth: 12248 bytes left
[   12.762797] mpls_gso: MPLS GSO support
[  703.251926] blackhole_netdev_xmit(): Dropping skb.
[  703.252014] blackhole_netdev_xmit(): Dropping skb.
[  703.252073] blackhole_netdev_xmit(): Dropping skb.
[  703.252125] blackhole_netdev_xmit(): Dropping skb.