[    2.226320] ip (247) used greatest stack depth: 12376 bytes left
[    3.003268] ip (281) used greatest stack depth: 12344 bytes left
[   18.758527] mpls_gso: MPLS GSO support
[  900.522761] blackhole_netdev_xmit(): Dropping skb.
[  900.522837] blackhole_netdev_xmit(): Dropping skb.
[  900.522875] blackhole_netdev_xmit(): Dropping skb.
[  900.522909] blackhole_netdev_xmit(): Dropping skb.