[    1.610559] ip (263) used greatest stack depth: 12264 bytes left
[    1.967439] ip (294) used greatest stack depth: 12232 bytes left
[    9.694026] ip (1228) used greatest stack depth: 11960 bytes left
[   10.530597] mpls_gso: MPLS GSO support
[  640.381805] blackhole_netdev_xmit(): Dropping skb.
[  640.381904] blackhole_netdev_xmit(): Dropping skb.
[  640.381941] blackhole_netdev_xmit(): Dropping skb.
[  640.381979] blackhole_netdev_xmit(): Dropping skb.