[    2.207628] ip (268) used greatest stack depth: 12416 bytes left
[    2.827384] ip (302) used greatest stack depth: 12384 bytes left
[   16.462944] mpls_gso: MPLS GSO support
[  654.293686] ip (22082) used greatest stack depth: 12320 bytes left
[  957.343422] ip (18596) used greatest stack depth: 12256 bytes left
[ 1122.693949] blackhole_netdev_xmit(): Dropping skb.
[ 1122.694013] blackhole_netdev_xmit(): Dropping skb.
[ 1122.694046] blackhole_netdev_xmit(): Dropping skb.
[ 1122.694084] blackhole_netdev_xmit(): Dropping skb.