[    1.635292] ip (260) used greatest stack depth: 12832 bytes left
[    1.659535] ip (263) used greatest stack depth: 12264 bytes left
[    2.045849] ip (294) used greatest stack depth: 12232 bytes left
[   12.213855] mpls_gso: MPLS GSO support
[  634.491031] ip (3593) used greatest stack depth: 12216 bytes left
[  701.614312] blackhole_netdev_xmit(): Dropping skb.
[  701.614403] blackhole_netdev_xmit(): Dropping skb.
[  701.614454] blackhole_netdev_xmit(): Dropping skb.
[  701.614500] blackhole_netdev_xmit(): Dropping skb.