[    1.827577] ip (245) used greatest stack depth: 12368 bytes left
[    1.857154] ip (248) used greatest stack depth: 12320 bytes left
[  966.296056] blackhole_netdev_xmit(): Dropping skb.
[  966.296137] blackhole_netdev_xmit(): Dropping skb.
[  966.296184] blackhole_netdev_xmit(): Dropping skb.
[  966.296240] blackhole_netdev_xmit(): Dropping skb.
[ 1163.857577] blackhole_netdev_xmit(): Dropping skb.
[ 1163.857658] blackhole_netdev_xmit(): Dropping skb.
[ 1163.857693] blackhole_netdev_xmit(): Dropping skb.
[ 1163.857731] blackhole_netdev_xmit(): Dropping skb.
[ 1242.703043] blackhole_netdev_xmit(): Dropping skb.
[ 1242.703116] blackhole_netdev_xmit(): Dropping skb.
[ 1242.703169] blackhole_netdev_xmit(): Dropping skb.
[ 1242.703222] blackhole_netdev_xmit(): Dropping skb.