[    2.521422] ip (282) used greatest stack depth: 12344 bytes left
[ 1060.829812] blackhole_netdev_xmit(): Dropping skb.
[ 1060.829883] blackhole_netdev_xmit(): Dropping skb.
[ 1060.829916] blackhole_netdev_xmit(): Dropping skb.
[ 1060.829945] blackhole_netdev_xmit(): Dropping skb.
[ 1245.563274] blackhole_netdev_xmit(): Dropping skb.
[ 1245.563326] blackhole_netdev_xmit(): Dropping skb.
[ 1245.563358] blackhole_netdev_xmit(): Dropping skb.
[ 1245.563396] blackhole_netdev_xmit(): Dropping skb.