[    2.232066] ip (293) used greatest stack depth: 12248 bytes left
[    2.266732] ip (298) used greatest stack depth: 12184 bytes left
[   10.176725] ip (1004) used greatest stack depth: 12080 bytes left
[   13.292659] mpls_gso: MPLS GSO support
[  655.845319] blackhole_netdev_xmit(): Dropping skb.
[  655.845377] blackhole_netdev_xmit(): Dropping skb.
[  655.845415] blackhole_netdev_xmit(): Dropping skb.
[  655.845449] blackhole_netdev_xmit(): Dropping skb.