[    3.795780] ip (289) used greatest stack depth: 12272 bytes left
[   18.881326] mpls_gso: MPLS GSO support
[  660.925222] ip (19402) used greatest stack depth: 12248 bytes left
[ 1131.578762] blackhole_netdev_xmit(): Dropping skb.
[ 1131.578836] blackhole_netdev_xmit(): Dropping skb.
[ 1131.578879] blackhole_netdev_xmit(): Dropping skb.
[ 1131.578931] blackhole_netdev_xmit(): Dropping skb.