[    2.239588] ip (250) used greatest stack depth: 12416 bytes left
[    3.015368] ip (284) used greatest stack depth: 12384 bytes left
[   19.125556] mpls_gso: MPLS GSO support
[  642.518509] ip (16342) used greatest stack depth: 12360 bytes left
[  647.516920] ip (16719) used greatest stack depth: 12320 bytes left
[  657.837256] ip (17701) used greatest stack depth: 12168 bytes left
[ 1064.718750] blackhole_netdev_xmit(): Dropping skb.
[ 1064.718829] blackhole_netdev_xmit(): Dropping skb.
[ 1064.718863] blackhole_netdev_xmit(): Dropping skb.
[ 1064.718898] blackhole_netdev_xmit(): Dropping skb.