[    2.265238] ip (254) used greatest stack depth: 12832 bytes left
[    2.306584] ip (257) used greatest stack depth: 12376 bytes left
[    3.012348] ip (288) used greatest stack depth: 12344 bytes left
[   16.823031] mpls_gso: MPLS GSO support
[  647.479651] ip (25475) used greatest stack depth: 12064 bytes left
[ 1210.602206] blackhole_netdev_xmit(): Dropping skb.
[ 1210.602277] blackhole_netdev_xmit(): Dropping skb.
[ 1210.602314] blackhole_netdev_xmit(): Dropping skb.
[ 1210.602354] blackhole_netdev_xmit(): Dropping skb.