[    2.356696] ip (272) used greatest stack depth: 12344 bytes left
[   12.308821] ip (1168) used greatest stack depth: 12184 bytes left
[   22.466156] ip (2375) used greatest stack depth: 12072 bytes left
[  953.518674] blackhole_netdev_xmit(): Dropping skb.
[  953.518740] blackhole_netdev_xmit(): Dropping skb.
[  953.518785] blackhole_netdev_xmit(): Dropping skb.
[  953.518819] blackhole_netdev_xmit(): Dropping skb.
[ 1017.387101] blackhole_netdev_xmit(): Dropping skb.
[ 1017.387163] blackhole_netdev_xmit(): Dropping skb.
[ 1017.387212] blackhole_netdev_xmit(): Dropping skb.
[ 1017.387262] blackhole_netdev_xmit(): Dropping skb.
[ 1059.809469] blackhole_netdev_xmit(): Dropping skb.
[ 1059.809526] blackhole_netdev_xmit(): Dropping skb.
[ 1059.809560] blackhole_netdev_xmit(): Dropping skb.
[ 1059.809592] blackhole_netdev_xmit(): Dropping skb.
[ 1066.668381] blackhole_netdev_xmit(): Dropping skb.
[ 1066.668440] blackhole_netdev_xmit(): Dropping skb.
[ 1066.668475] blackhole_netdev_xmit(): Dropping skb.
[ 1066.668508] blackhole_netdev_xmit(): Dropping skb.
[ 1146.427728] blackhole_netdev_xmit(): Dropping skb.
[ 1146.427800] blackhole_netdev_xmit(): Dropping skb.
[ 1146.427837] blackhole_netdev_xmit(): Dropping skb.
[ 1146.427871] blackhole_netdev_xmit(): Dropping skb.