[    2.602386] ip (301) used greatest stack depth: 12384 bytes left
[    5.917832] ip (470) used greatest stack depth: 12360 bytes left
[   15.420155] mpls_gso: MPLS GSO support
[ 1210.671346] blackhole_netdev_xmit(): Dropping skb.
[ 1210.671415] blackhole_netdev_xmit(): Dropping skb.
[ 1210.671449] blackhole_netdev_xmit(): Dropping skb.
[ 1210.671481] blackhole_netdev_xmit(): Dropping skb.