[    2.142409] ip (247) used greatest stack depth: 12376 bytes left
[    2.805837] ip (281) used greatest stack depth: 12360 bytes left
[    6.455849] ip (455) used greatest stack depth: 12344 bytes left
[   12.480969] ip (982) used greatest stack depth: 12304 bytes left
[   17.224897] mpls_gso: MPLS GSO support
[   29.636905] ip (2567) used greatest stack depth: 12032 bytes left
[  702.347372] blackhole_netdev_xmit(): Dropping skb.
[  702.347434] blackhole_netdev_xmit(): Dropping skb.
[  702.347467] blackhole_netdev_xmit(): Dropping skb.
[  702.347500] blackhole_netdev_xmit(): Dropping skb.
[  965.477750] blackhole_netdev_xmit(): Dropping skb.
[  965.477837] blackhole_netdev_xmit(): Dropping skb.
[  965.477896] blackhole_netdev_xmit(): Dropping skb.
[  965.477944] blackhole_netdev_xmit(): Dropping skb.