[    2.198237] ip (277) used greatest stack depth: 12160 bytes left
[  972.849840] blackhole_netdev_xmit(): Dropping skb.
[  972.849933] blackhole_netdev_xmit(): Dropping skb.
[  972.849995] blackhole_netdev_xmit(): Dropping skb.
[  972.850062] blackhole_netdev_xmit(): Dropping skb.
[ 1225.417718] blackhole_netdev_xmit(): Dropping skb.
[ 1225.417769] blackhole_netdev_xmit(): Dropping skb.
[ 1225.417799] blackhole_netdev_xmit(): Dropping skb.
[ 1225.417828] blackhole_netdev_xmit(): Dropping skb.
[ 1235.416293] blackhole_netdev_xmit(): Dropping skb.
[ 1235.416348] blackhole_netdev_xmit(): Dropping skb.
[ 1235.416380] blackhole_netdev_xmit(): Dropping skb.
[ 1235.416412] blackhole_netdev_xmit(): Dropping skb.