[    2.102841] ip (242) used greatest stack depth: 12384 bytes left
[    2.734570] ip (276) used greatest stack depth: 12368 bytes left
[    2.784244] ip (280) used greatest stack depth: 12352 bytes left
[  817.569735] blackhole_netdev_xmit(): Dropping skb.
[  817.569802] blackhole_netdev_xmit(): Dropping skb.
[  817.569837] blackhole_netdev_xmit(): Dropping skb.
[  817.569875] blackhole_netdev_xmit(): Dropping skb.
[  862.327637] blackhole_netdev_xmit(): Dropping skb.
[  862.327687] blackhole_netdev_xmit(): Dropping skb.
[  862.327722] blackhole_netdev_xmit(): Dropping skb.
[  862.327758] blackhole_netdev_xmit(): Dropping skb.
[ 1057.158901] blackhole_netdev_xmit(): Dropping skb.
[ 1057.158986] blackhole_netdev_xmit(): Dropping skb.
[ 1057.159037] blackhole_netdev_xmit(): Dropping skb.
[ 1057.159085] blackhole_netdev_xmit(): Dropping skb.
[ 1228.145067] blackhole_netdev_xmit(): Dropping skb.
[ 1228.145129] blackhole_netdev_xmit(): Dropping skb.
[ 1228.145164] blackhole_netdev_xmit(): Dropping skb.
[ 1228.145197] blackhole_netdev_xmit(): Dropping skb.
[ 1240.562294] blackhole_netdev_xmit(): Dropping skb.
[ 1240.562352] blackhole_netdev_xmit(): Dropping skb.
[ 1240.562390] blackhole_netdev_xmit(): Dropping skb.
[ 1240.562427] blackhole_netdev_xmit(): Dropping skb.