[    2.179977] ip (246) used greatest stack depth: 12376 bytes left
[    2.842582] ip (280) used greatest stack depth: 12360 bytes left
[    3.050763] ip (294) used greatest stack depth: 12344 bytes left
[    8.836555] ip (655) used greatest stack depth: 12288 bytes left
[   16.760600] mpls_gso: MPLS GSO support
[ 1019.309952] blackhole_netdev_xmit(): Dropping skb.
[ 1019.310026] blackhole_netdev_xmit(): Dropping skb.
[ 1019.310062] blackhole_netdev_xmit(): Dropping skb.
[ 1019.310102] blackhole_netdev_xmit(): Dropping skb.
[ 1229.315343] blackhole_netdev_xmit(): Dropping skb.
[ 1229.315416] blackhole_netdev_xmit(): Dropping skb.
[ 1229.315463] blackhole_netdev_xmit(): Dropping skb.
[ 1229.315500] blackhole_netdev_xmit(): Dropping skb.