[    2.007232] ip (294) used greatest stack depth: 12376 bytes left
[    8.061522] ip (823) used greatest stack depth: 12360 bytes left
[   12.226098] mpls_gso: MPLS GSO support
[  712.003095] blackhole_netdev_xmit(): Dropping skb.
[  712.003191] blackhole_netdev_xmit(): Dropping skb.
[  712.003226] blackhole_netdev_xmit(): Dropping skb.
[  712.003261] blackhole_netdev_xmit(): Dropping skb.
[ 1204.399991] blackhole_netdev_xmit(): Dropping skb.
[ 1204.400088] blackhole_netdev_xmit(): Dropping skb.
[ 1204.400149] blackhole_netdev_xmit(): Dropping skb.
[ 1204.400197] blackhole_netdev_xmit(): Dropping skb.