[    2.997610] ip (281) used greatest stack depth: 12360 bytes left
[    6.499855] ip (444) used greatest stack depth: 12344 bytes left
[  672.064638] blackhole_netdev_xmit(): Dropping skb.
[  672.064714] blackhole_netdev_xmit(): Dropping skb.
[  672.064756] blackhole_netdev_xmit(): Dropping skb.
[  672.064796] blackhole_netdev_xmit(): Dropping skb.
[ 1025.014391] blackhole_netdev_xmit(): Dropping skb.
[ 1025.014474] blackhole_netdev_xmit(): Dropping skb.
[ 1025.014508] blackhole_netdev_xmit(): Dropping skb.
[ 1025.014546] blackhole_netdev_xmit(): Dropping skb.
[ 1137.523587] blackhole_netdev_xmit(): Dropping skb.
[ 1137.523672] blackhole_netdev_xmit(): Dropping skb.
[ 1137.523710] blackhole_netdev_xmit(): Dropping skb.
[ 1137.523748] blackhole_netdev_xmit(): Dropping skb.
[ 1158.084654] blackhole_netdev_xmit(): Dropping skb.
[ 1158.084739] blackhole_netdev_xmit(): Dropping skb.
[ 1158.084797] blackhole_netdev_xmit(): Dropping skb.
[ 1158.084866] blackhole_netdev_xmit(): Dropping skb.
[ 1219.974511] blackhole_netdev_xmit(): Dropping skb.
[ 1219.974562] blackhole_netdev_xmit(): Dropping skb.
[ 1219.974593] blackhole_netdev_xmit(): Dropping skb.
[ 1219.974625] blackhole_netdev_xmit(): Dropping skb.