[    2.453454] ip (275) used greatest stack depth: 12320 bytes left
[  651.400984] ip (23502) used greatest stack depth: 12272 bytes left
[  694.779436] blackhole_netdev_xmit(): Dropping skb.
[  694.779487] blackhole_netdev_xmit(): Dropping skb.
[  694.779518] blackhole_netdev_xmit(): Dropping skb.
[  694.779546] blackhole_netdev_xmit(): Dropping skb.
[  902.965865] blackhole_netdev_xmit(): Dropping skb.
[  902.965932] blackhole_netdev_xmit(): Dropping skb.
[  902.965965] blackhole_netdev_xmit(): Dropping skb.
[  902.965992] blackhole_netdev_xmit(): Dropping skb.
[ 1029.543052] blackhole_netdev_xmit(): Dropping skb.
[ 1029.543137] blackhole_netdev_xmit(): Dropping skb.
[ 1029.543196] blackhole_netdev_xmit(): Dropping skb.
[ 1029.543272] blackhole_netdev_xmit(): Dropping skb.
[ 1184.096027] blackhole_netdev_xmit(): Dropping skb.
[ 1184.096081] blackhole_netdev_xmit(): Dropping skb.
[ 1184.096119] blackhole_netdev_xmit(): Dropping skb.
[ 1184.096154] blackhole_netdev_xmit(): Dropping skb.
[ 1205.491397] blackhole_netdev_xmit(): Dropping skb.
[ 1205.491449] blackhole_netdev_xmit(): Dropping skb.
[ 1205.491481] blackhole_netdev_xmit(): Dropping skb.
[ 1205.491521] blackhole_netdev_xmit(): Dropping skb.