[    2.243733] ip (277) used greatest stack depth: 12320 bytes left
[    8.480454] ip (798) used greatest stack depth: 12160 bytes left
[  702.271803] blackhole_netdev_xmit(): Dropping skb.
[  702.271954] blackhole_netdev_xmit(): Dropping skb.
[  702.272003] blackhole_netdev_xmit(): Dropping skb.
[  702.272047] blackhole_netdev_xmit(): Dropping skb.
[  937.628742] blackhole_netdev_xmit(): Dropping skb.
[  937.628827] blackhole_netdev_xmit(): Dropping skb.
[  937.628867] blackhole_netdev_xmit(): Dropping skb.
[  937.628917] blackhole_netdev_xmit(): Dropping skb.
[  951.869899] blackhole_netdev_xmit(): Dropping skb.
[  951.869957] blackhole_netdev_xmit(): Dropping skb.
[  951.869992] blackhole_netdev_xmit(): Dropping skb.
[  951.870032] blackhole_netdev_xmit(): Dropping skb.
[  993.752207] blackhole_netdev_xmit(): Dropping skb.
[  993.752279] blackhole_netdev_xmit(): Dropping skb.
[  993.752319] blackhole_netdev_xmit(): Dropping skb.
[  993.752353] blackhole_netdev_xmit(): Dropping skb.
[ 1011.175256] blackhole_netdev_xmit(): Dropping skb.
[ 1011.175337] blackhole_netdev_xmit(): Dropping skb.
[ 1011.175393] blackhole_netdev_xmit(): Dropping skb.
[ 1011.175447] blackhole_netdev_xmit(): Dropping skb.
[ 1020.599873] blackhole_netdev_xmit(): Dropping skb.
[ 1020.599940] blackhole_netdev_xmit(): Dropping skb.
[ 1020.599977] blackhole_netdev_xmit(): Dropping skb.
[ 1020.600015] blackhole_netdev_xmit(): Dropping skb.
[ 1132.560911] blackhole_netdev_xmit(): Dropping skb.
[ 1132.560969] blackhole_netdev_xmit(): Dropping skb.
[ 1132.561006] blackhole_netdev_xmit(): Dropping skb.
[ 1132.561045] blackhole_netdev_xmit(): Dropping skb.