[    2.396578] ip (251) used greatest stack depth: 12376 bytes left
[    3.089982] ip (282) used greatest stack depth: 12344 bytes left
[   18.470315] mpls_gso: MPLS GSO support
[  875.115115] blackhole_netdev_xmit(): Dropping skb.
[  875.115176] blackhole_netdev_xmit(): Dropping skb.
[  875.115210] blackhole_netdev_xmit(): Dropping skb.
[  875.115253] blackhole_netdev_xmit(): Dropping skb.