[    1.905003] ip (243) used greatest stack depth: 12448 bytes left
[    1.941865] ip (246) used greatest stack depth: 12384 bytes left
[    2.522045] ip (277) used greatest stack depth: 12352 bytes left
[   13.619914] ip (1173) used greatest stack depth: 12296 bytes left
[   21.310559] ip (2137) used greatest stack depth: 12072 bytes left
[  793.603578] blackhole_netdev_xmit(): Dropping skb.
[  793.603641] blackhole_netdev_xmit(): Dropping skb.
[  793.603673] blackhole_netdev_xmit(): Dropping skb.
[  793.603705] blackhole_netdev_xmit(): Dropping skb.
[  820.383632] blackhole_netdev_xmit(): Dropping skb.
[  820.383682] blackhole_netdev_xmit(): Dropping skb.
[  820.383713] blackhole_netdev_xmit(): Dropping skb.
[  820.383740] blackhole_netdev_xmit(): Dropping skb.
[  865.953268] blackhole_netdev_xmit(): Dropping skb.
[  865.953317] blackhole_netdev_xmit(): Dropping skb.
[  865.953347] blackhole_netdev_xmit(): Dropping skb.
[  865.953374] blackhole_netdev_xmit(): Dropping skb.
[  906.058958] blackhole_netdev_xmit(): Dropping skb.
[  906.059007] blackhole_netdev_xmit(): Dropping skb.
[  906.059038] blackhole_netdev_xmit(): Dropping skb.
[  906.059066] blackhole_netdev_xmit(): Dropping skb.
[ 1011.296530] blackhole_netdev_xmit(): Dropping skb.
[ 1011.296594] blackhole_netdev_xmit(): Dropping skb.
[ 1011.296629] blackhole_netdev_xmit(): Dropping skb.
[ 1011.296663] blackhole_netdev_xmit(): Dropping skb.
[ 1017.958348] blackhole_netdev_xmit(): Dropping skb.
[ 1017.958411] blackhole_netdev_xmit(): Dropping skb.
[ 1017.958450] blackhole_netdev_xmit(): Dropping skb.
[ 1017.958485] blackhole_netdev_xmit(): Dropping skb.