[    1.733690] ip (246) used greatest stack depth: 12376 bytes left
[    2.218590] ip (280) used greatest stack depth: 12360 bytes left
[    2.256507] ip (284) used greatest stack depth: 12344 bytes left
[   14.181239] mpls_gso: MPLS GSO support
[ 1079.174508] blackhole_netdev_xmit(): Dropping skb.
[ 1079.174684] blackhole_netdev_xmit(): Dropping skb.
[ 1079.174721] blackhole_netdev_xmit(): Dropping skb.
[ 1079.174754] blackhole_netdev_xmit(): Dropping skb.