[    2.287911] ip (274) used greatest stack depth: 12344 bytes left
[   24.164564] ip (2578) used greatest stack depth: 12328 bytes left
[   24.721915] ip (2611) used greatest stack depth: 12056 bytes left
[  803.037947] blackhole_netdev_xmit(): Dropping skb.
[  803.038024] blackhole_netdev_xmit(): Dropping skb.
[  803.038071] blackhole_netdev_xmit(): Dropping skb.
[  803.038111] blackhole_netdev_xmit(): Dropping skb.
[ 1014.806364] blackhole_netdev_xmit(): Dropping skb.
[ 1014.806427] blackhole_netdev_xmit(): Dropping skb.
[ 1014.806460] blackhole_netdev_xmit(): Dropping skb.
[ 1014.806493] blackhole_netdev_xmit(): Dropping skb.
[ 1069.568844] blackhole_netdev_xmit(): Dropping skb.
[ 1069.568903] blackhole_netdev_xmit(): Dropping skb.
[ 1069.568936] blackhole_netdev_xmit(): Dropping skb.
[ 1069.568973] blackhole_netdev_xmit(): Dropping skb.
[ 1158.681526] blackhole_netdev_xmit(): Dropping skb.
[ 1158.681615] blackhole_netdev_xmit(): Dropping skb.
[ 1158.681671] blackhole_netdev_xmit(): Dropping skb.
[ 1158.681736] blackhole_netdev_xmit(): Dropping skb.
[ 1210.544853] blackhole_netdev_xmit(): Dropping skb.
[ 1210.544902] blackhole_netdev_xmit(): Dropping skb.
[ 1210.544932] blackhole_netdev_xmit(): Dropping skb.
[ 1210.544958] blackhole_netdev_xmit(): Dropping skb.
[ 1212.753072] blackhole_netdev_xmit(): Dropping skb.
[ 1212.753135] blackhole_netdev_xmit(): Dropping skb.
[ 1212.753182] blackhole_netdev_xmit(): Dropping skb.
[ 1212.753221] blackhole_netdev_xmit(): Dropping skb.
[ 1217.124800] blackhole_netdev_xmit(): Dropping skb.
[ 1217.124861] blackhole_netdev_xmit(): Dropping skb.
[ 1217.124901] blackhole_netdev_xmit(): Dropping skb.
[ 1217.124945] blackhole_netdev_xmit(): Dropping skb.