[    2.011439] ip (248) used greatest stack depth: 12376 bytes left
[    2.714281] ip (282) used greatest stack depth: 12360 bytes left
[    2.767809] ip (286) used greatest stack depth: 12304 bytes left
[   18.358863] mpls_gso: MPLS GSO support
[  956.740612] blackhole_netdev_xmit(): Dropping skb.
[  956.740687] blackhole_netdev_xmit(): Dropping skb.
[  956.740725] blackhole_netdev_xmit(): Dropping skb.
[  956.740763] blackhole_netdev_xmit(): Dropping skb.
[ 1006.152880] blackhole_netdev_xmit(): Dropping skb.
[ 1006.152944] blackhole_netdev_xmit(): Dropping skb.
[ 1006.152978] blackhole_netdev_xmit(): Dropping skb.
[ 1006.153012] blackhole_netdev_xmit(): Dropping skb.